Model construction method, device and equipment for simulating air effect in honeycomb aluminum barrier

Abstract

The present invention relates to the technical field of finite element simulation modeling, and in particular to a model construction method, device and equipment for simulating the air effect in a honeycomb aluminum barrier. The method comprises: building a target honeycomb block simulation model containing a single degree of freedom discrete beam unit; conducting a quasi-static working condition test, and based on the results of the quasi-static working condition test and the target honeycomb block simulation model, benchmarking and constructing a honeycomb block static extrusion target simulation model; conducting a dynamic working condition test, and based on the results of the dynamic working condition test and the honeycomb block static extrusion target simulation model, benchmarking and constructing a honeycomb block finite element model coupled with air effect; based on the honeycomb block finite element model coupled with air effect, according to a preset skin grid and a preset connection relationship, generating an overall model of a honeycomb aluminum barrier. Thus, the problems of inaccurate simulation results of automobile collisions and unrealistic body deformation in the prior art are solved, the accuracy of automobile collision simulation is improved, and the calculation accuracy and efficiency of barrier working conditions are optimized.

Description

Technical Field

[0001] The present invention relates to the technical field of finite element simulation modeling, and in particular to a model building method, device and equipment for simulating air effects in a honeycomb aluminum barrier. Background Art

[0002] At present, in the domestic automobile industry, with the continuous increase in automobile demand and export volume, automobile companies need to meet different regulatory evaluations based on the safety requirements of the current developed models and the regulatory requirements of the countries where they are sold. In the early stage of vehicle development, in order to save the cost of real vehicle collision, a large amount of finite element calculation resources are required for collision simulation. Honeycomb aluminum barriers are widely used as standard impact objects for vehicle passive safety tests due to their low density, low cost, stable mechanical properties and high deformation energy absorption in the hole direction.

[0003] In the related technology, there are two commonly used technical solutions. One is to simplify the honeycomb aluminum cavity into several airbags, and establish an airbag model to simulate the air effect. The airbag finite element model can simulate the air pressure in the case of gas leakage.

[0004] However, the finite element model of the airbag is relatively complex and consumes a lot of computing resources. Usually, only a limited number of airbags can be set in the finite element honeycomb aluminum barrier, resulting in inaccurate simulation results of car collisions, which needs to be solved urgently. Summary of the invention

[0005] The present invention provides a model construction method, device and equipment for simulating the air effect in a honeycomb aluminum barrier, so as to solve the problems in the prior art of inaccurate simulation results of automobile collisions and unrealistic body deformation, improve the accuracy of automobile collision simulation, and optimize the calculation accuracy and efficiency of barrier working conditions.

[0006] To achieve the above object, the first embodiment of the present invention proposes a model construction method for simulating the air effect in a honeycomb aluminum barrier, comprising the following steps:

[0007] Build a simulation model of the target honeycomb block containing single-degree-of-freedom discrete beam elements;

[0008] Conducting a quasi-static working condition test, and constructing a static extrusion target simulation model of a honeycomb block based on the results of the quasi-static working condition test and the target honeycomb block simulation model;

[0009] Conducting a dynamic working condition test, and constructing a honeycomb block finite element model coupled with air effect based on the results of the dynamic working condition test and the honeycomb block static extrusion target simulation model;

[0010] Based on the honeycomb block finite element model of the coupled air effect, an overall model of the honeycomb aluminum barrier is generated according to a preset skin grid and a preset connection relationship.

[0011] According to one embodiment of the present invention, the construction of a target honeycomb block simulation model containing single-degree-of-freedom discrete beam units includes:

[0012] Building a single honeycomb hole grid simulation model, and duplicating the single honeycomb hole grid simulation model to obtain multiple honeycomb hole grid simulation models;

[0013] Arrange and combine the plurality of honeycomb hole grid simulation models according to a preset rule to obtain a honeycomb block grid simulation model that meets preset size requirements;

[0014] The single-degree-of-freedom discrete beam unit is added to the center position of each honeycomb hole grid in the honeycomb block grid simulation model to obtain the target honeycomb block simulation model.

[0015] According to one embodiment of the present invention, before performing the quasi-static working condition test, the method further includes:

[0016] Make a honeycomb aluminum block entity that meets the preset size requirements;

[0017] A skin or partition grid is established at both ends of the honeycomb aluminum block entity along the hole depth direction, and both ends of the honeycomb aluminum block entity are tightly fixed on the skin or the partition grid to obtain a reinforced honeycomb aluminum block entity.

[0018] According to one embodiment of the present invention, the quasi-static working condition test comprises:

[0019] The reinforced honeycomb aluminum block entity is placed on the test bench in a preset direction, and a flat plate whose stiffness meets the preset stiffness requirements is used to extrude the reinforced honeycomb aluminum block entity in a preset extrusion direction at a preset speed until the reinforced honeycomb aluminum block entity and the pressure of the testing machine meet the preset curve drawing starting conditions, and the first contact force-displacement curve between the flat plate and the reinforced honeycomb aluminum block entity is drawn.

[0020] According to one embodiment of the present invention, the benchmarking and constructing of a honeycomb block static extrusion target simulation model based on the results of the quasi-static working condition test and the target honeycomb block simulation model includes:

[0021] Based on the first contact force-displacement curve, the material, strength, thickness and failure parameters of the honeycomb block in the target honeycomb block simulation model are adjusted, and when the second contact force-displacement curve of the flat plate in the target honeycomb block simulation model and the honeycomb block in the target honeycomb block simulation model coincides with the first contact force-displacement curve, the static extrusion target simulation model of the honeycomb block is obtained.

[0022] According to one embodiment of the present invention, the dynamic operating condition test includes:

[0023] The reinforced honeycomb aluminum block entity is placed on the test bench in a preset direction, and a rigid plate with an acceleration sensor or a displacement sensor is used to extrude the reinforced honeycomb aluminum block entity at a first preset speed, a second preset speed and a third preset speed in sequence to obtain a third contact force-displacement curve of the reinforced honeycomb aluminum block entity during dynamic deformation.

[0024] According to one embodiment of the present invention, the method of benchmarking and constructing a honeycomb block finite element model coupled with air effect based on the results of the dynamic working condition test and the honeycomb block static extrusion target simulation model includes:

[0025] According to the difference between the third contact force-displacement curve and the first contact force-displacement curve, a resistance-displacement curve caused by the air effect of the reinforced honeycomb aluminum block entity at different speeds is obtained;

[0026] Inputting the resistance-displacement curve into the honeycomb block static extrusion target simulation model to obtain a honeycomb block dynamic extrusion simulation model;

[0027] A first preset curve and a second preset curve are input into a single degree of freedom discrete beam unit in the honeycomb block dynamic extrusion simulation model, and the honeycomb block dynamic extrusion simulation model is iteratively optimized based on the first preset curve and the second preset curve to obtain the honeycomb block finite element model of the coupled air effect.

[0028] According to the model construction method for simulating the air effect in the honeycomb aluminum barrier proposed in the embodiment of the present invention, by conducting a quasi-static working condition test, a static extrusion target simulation model of the honeycomb block can be constructed based on the results of the quasi-static working condition test and the target honeycomb block simulation model containing a single degree of freedom discrete beam unit; and by conducting a dynamic working condition test, a honeycomb block finite element model of coupled air effect can be constructed based on the results of the dynamic working condition test and the static extrusion target simulation model of the honeycomb block; based on the honeycomb block finite element model of coupled air effect, according to the preset skin grid and the preset connection relationship, the overall model of the honeycomb aluminum barrier can be generated. In this way, the problems of inaccurate simulation results of automobile collision and inaccurate body deformation in the prior art are solved, the accuracy of automobile collision simulation is improved, and the calculation accuracy and efficiency of the barrier working condition are optimized.

[0029] To achieve the above-mentioned purpose, the second embodiment of the present invention provides a model building device for simulating the air effect in a honeycomb aluminum barrier, comprising:

[0030] A building module is used to build a simulation model of a target honeycomb block containing single-degree-of-freedom discrete beam elements;

[0031] The first construction module is used to perform a quasi-static working condition test, and to construct a static extrusion target simulation model of a honeycomb block based on the results of the quasi-static working condition test and the target honeycomb block simulation model;

[0032] The second construction module is used to conduct a dynamic working condition test, and to construct a honeycomb block finite element model coupled with air effect based on the results of the dynamic working condition test and the honeycomb block static extrusion target simulation model;

[0033] A generation module is used to generate an overall model of the honeycomb aluminum barrier based on the honeycomb block finite element model of the coupled air effect, according to a preset skin grid and a preset connection relationship.

[0034] According to one embodiment of the present invention, the building module is specifically used for:

[0035] Building a single honeycomb hole grid simulation model, and duplicating the single honeycomb hole grid simulation model to obtain multiple honeycomb hole grid simulation models;

[0036] Arrange and combine the plurality of honeycomb hole grid simulation models according to a preset rule to obtain a honeycomb block grid simulation model that meets preset size requirements;

[0037] The single-degree-of-freedom discrete beam unit is added to the center position of each honeycomb hole grid in the honeycomb block grid simulation model to obtain a target honeycomb block simulation model.

[0038] According to one embodiment of the present invention, before performing the quasi-static working condition test, the first building module is further used to:

[0039] Make a honeycomb aluminum block entity that meets the preset size requirements;

[0040] A skin or partition grid is established at both ends of the honeycomb aluminum block entity along the hole depth direction, and both ends of the honeycomb aluminum block entity are tightly fixed on the skin or the partition grid to obtain a reinforced honeycomb aluminum block entity.

[0041] According to an embodiment of the present invention, the first building module is specifically used to:

[0042] The reinforced honeycomb aluminum block entity is placed on the test bench in a preset direction, and a flat plate whose stiffness meets the preset stiffness requirements is used to extrude the reinforced honeycomb aluminum block entity in a preset extrusion direction at a preset speed until the reinforced honeycomb aluminum block entity and the pressure of the testing machine meet the preset curve drawing starting conditions, and the first contact force-displacement curve between the flat plate and the reinforced honeycomb aluminum block entity is drawn.

[0043] According to an embodiment of the present invention, the first building module is specifically used to:

[0044] Based on the first contact force-displacement curve, the material, strength, thickness and failure parameters of the honeycomb block in the target honeycomb block simulation model are adjusted, and when the second contact force-displacement curve of the flat plate in the target honeycomb block simulation model and the honeycomb block in the target honeycomb block simulation model coincides with the first contact force-displacement curve, the static extrusion target simulation model of the honeycomb block is obtained.

[0045] According to one embodiment of the present invention, the second building module is specifically used to:

[0046] The reinforced honeycomb aluminum block entity is placed on the test bench in a preset direction, and a rigid plate with an acceleration sensor or a displacement sensor is used to extrude the reinforced honeycomb aluminum block entity at a first preset speed, a second preset speed and a third preset speed in sequence to obtain a third contact force-displacement curve of the reinforced honeycomb aluminum block entity during dynamic deformation.

[0047] According to one embodiment of the present invention, the second building module is specifically used to:

[0048] According to the difference between the third contact force-displacement curve and the first contact force-displacement curve, a resistance-displacement curve caused by the air effect of the reinforced honeycomb aluminum block entity at different speeds is obtained;

[0049] Inputting the resistance-displacement curve into the honeycomb block static extrusion target simulation model to obtain a honeycomb block dynamic extrusion simulation model;

[0050] A first preset curve and a second preset curve are input into a single degree of freedom discrete beam unit in the honeycomb block dynamic extrusion simulation model, and the honeycomb block dynamic extrusion simulation model is iteratively optimized based on the first preset curve and the second preset curve to obtain the honeycomb block finite element model of the coupled air effect.

[0051] According to the model building device for simulating the air effect in the honeycomb aluminum barrier proposed in the embodiment of the present invention, by conducting a quasi-static working condition test, a static extrusion target simulation model of the honeycomb block can be constructed based on the results of the quasi-static working condition test and the simulation model of the target honeycomb block with a single degree of freedom discrete beam unit; and by conducting a dynamic working condition test, a honeycomb block finite element model of coupled air effect can be constructed based on the results of the dynamic working condition test and the static extrusion target simulation model of the honeycomb block; based on the honeycomb block finite element model of coupled air effect, according to the preset skin grid and the preset connection relationship, the overall model of the honeycomb aluminum barrier can be generated. Thus, the problems of inaccurate simulation results of automobile collision and inaccurate body deformation in the prior art are solved, the accuracy of automobile collision simulation is improved, and the calculation accuracy and efficiency of the barrier working condition are optimized.

[0052] To achieve the above-mentioned purpose, the third aspect of the present invention proposes an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the model construction method for simulating the air effect in the honeycomb aluminum barrier as described in the above-mentioned embodiment.

[0053] To achieve the above objectives, a fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, which is executed by a processor to implement a model building method for simulating the air effect in a honeycomb aluminum barrier as described in the above embodiments.

[0054] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0056] Figure 1 A flowchart of a model building method for simulating air effects in a honeycomb aluminum barrier provided according to an embodiment of the present invention;

[0057] Figure 2 It is a schematic diagram of a honeycomb aluminum structure in the related art;

[0058] Figure 3 A schematic diagram of a model of a beam unit in a honeycomb hole according to an embodiment of the present invention;

[0059] Figure 4 A schematic diagram of loading and unloading curves of a beam unit simulating air according to an embodiment of the present invention;

[0060] Figure 5A flowchart of another model building method for simulating air effect in a honeycomb aluminum barrier provided according to an embodiment of the present invention;

[0061] Figure 6 A schematic block diagram of a model building device for simulating air effects in a honeycomb aluminum barrier according to an embodiment of the present invention;

[0062] Figure 7 It is a schematic diagram of the structure of an electronic device provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0063] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0064] The following describes the model construction method, device and equipment for simulating the air effect in the honeycomb aluminum barrier proposed in accordance with the embodiments of the present invention with reference to the accompanying drawings.

[0065] Figure 1 It is a flow chart of a method for constructing a model for simulating air effects in a honeycomb aluminum barrier according to an embodiment of the present invention.

[0066] Before introducing the model construction method for simulating the air effect in the honeycomb aluminum barrier proposed in the embodiment of the present invention, the relevant technical principles are first introduced.

[0067] Honeycomb aluminum is made of aluminum foil and structural glue. It has a hexagonal pore structure, similar to a bee's honeycomb. It has a very high volume-material weight ratio and deformation energy absorption-weight ratio. Honeycomb aluminum is widely used in automobile testing, aerospace, and rail transportation due to its low density, low cost, stable mechanical properties, and high deformation energy absorption in the hole direction. In automobile passive safety collision tests, honeycomb aluminum barriers are often used as standard impact objects for vehicle passive safety tests. Honeycomb barriers are mainly divided into two categories, including frontal collision barriers and side collision barriers. With the continuous development of vehicle structural stiffness, weight, and active and passive safety technologies, the design of barriers has also been updated, but the composition of most deformable barriers is the same, that is, the composition of the barriers is mainly honeycomb aluminum blocks, aluminum plates, and structural adhesives.

[0068] The main manufacturing process of honeycomb aluminum can be divided into two types: one is to first apply structural glue on the aluminum foil at strip intervals, paste multiple layers of aluminum foil together, and after the glue solidifies, stretch the bottom layer and the first layer of aluminum foil to a certain distance to form honeycomb aluminum; the other is to first roll the aluminum foil into a wavy shape, and then use structural glue to bond them together. The manufacturing method of honeycomb aluminum determines that two of the six pores of each honeycomb hole are double-layer aluminum foil, and the other four are single-layer aluminum foil, which causes the honeycomb block stiffness to have a strong directional attribute: the direction of the honeycomb hole is generally defined as the T direction, the direction of the double-layer aluminum foil is the L direction, and the direction perpendicular to L is the W direction. The L direction and the W direction form the horizontal surface. Honeycomb aluminum is mainly classified according to the size of the honeycomb aperture, the thickness of the aluminum foil and the brand. The size of the honeycomb aperture is the main determinant of the honeycomb mechanical properties.

[0069] The manufacturing process of the honeycomb aluminum barrier for automobile collision test is to glue the honeycomb aluminum with structural glue and aluminum skin together, and the honeycomb holes and the aluminum skin at both ends form a closed cavity structure. During the car collision process, the air enclosed in the honeycomb aluminum is compressed sharply, generating resistance, which can be called the "air effect". Although the deformation of the honeycomb aluminum and the failure of the structural glue will cause some air leakage, due to the high collision speed, the reaction force generated by the air on the car body cannot be ignored. Various experimental results have verified that air improves the strength of the honeycomb aluminum structure during high-speed deformation.

[0070] Since the air leakage rate during the collision will change with the pressure and the deformation depth of the honeycomb aluminum, it is difficult to accurately calculate the air pressure. At present, there are two commonly used technical solutions for simulating the air compression effect in the finite element honeycomb aluminum barrier. One is to simplify the honeycomb aluminum cavity into several airbags and establish an airbag model to simulate the air effect. Among them, the airbag finite element model can simulate the air pressure in the case of gas leakage and is widely used in the simulation of automobile occupant protection. However, the airbag finite element model is relatively complex and consumes more computing resources. Usually, only a limited number of airbags can be set in the finite element honeycomb aluminum barrier, resulting in uneven air pressure distribution, which is out of touch with the actual physical situation, resulting in inaccurate simulation results of automobile collisions and inaccurate body deformation. In addition, due to the influence of the airbag membrane unit on the contact calculated by the model, the air in the actual physical barrier only acts in the direction of the honeycomb hole and has no effect on the direction perpendicular to the honeycomb hole, but this is difficult to achieve in the simulation model, thereby increasing the error of the finite element simulation results. Another method is to gradually increase the thickness of the honeycomb hole wall shell unit or increase the strength of the variable unit material along the hole direction to simulate the increase in deformation strength caused by the air effect as the honeycomb aluminum is gradually squeezed. However, this method is only an equivalent simulation of the force caused by the air effect, and is more suitable for simulating specific deformation speeds and specific obstacles, such as quasi-static impact conditions of regular-shaped rigid parts, and it is difficult to simulate the influence of air effects in actual collisions.

[0071] Based on the above problems, the embodiment of the present invention proposes a model construction method for simulating the air effect in the honeycomb aluminum barrier. By conducting a quasi-static working condition test, a static extrusion target simulation model of the honeycomb block can be constructed based on the results of the quasi-static working condition test; and by conducting a dynamic working condition test, a honeycomb block finite element model of coupled air effect can be constructed based on the results of the dynamic working condition test and the honeycomb block static extrusion target simulation model; based on the honeycomb block finite element model of coupled air effect, according to the preset skin grid and the preset connection relationship, the overall model of the honeycomb aluminum barrier can be generated. In this way, the problems of inaccurate simulation results of automobile collision and inaccurate body deformation in the prior art are solved, the accuracy of automobile collision simulation is improved, and the calculation accuracy and efficiency of the barrier working condition are optimized.

[0072] For example, Figure 1 As shown, the model construction method for simulating the air effect in the honeycomb aluminum barrier includes the following steps:

[0073] In step S101, a target honeycomb block simulation model containing single-degree-of-freedom discrete beam elements is constructed.

[0074] It can be understood that the single-degree-of-freedom discrete beam element is a type of element specially designed to simulate the stress and deformation of beam structures in a single direction. This element can effectively withstand the effects of tension, pressure and bending moment, and each node has two degrees of freedom, namely linear displacement and rotation. Due to its high efficiency and accuracy in simulating the stress and deformation of beam structures, the single-degree-of-freedom discrete beam element has been widely used in the fields of engineering analysis and numerical simulation.

[0075] The following describes in detail how to obtain the target honeycomb block simulation model.

[0076] As a possible implementation method, in some embodiments, a target honeycomb block simulation model containing a single degree of freedom discrete beam unit is constructed, including: constructing a single honeycomb hole grid simulation model, and copying the single honeycomb hole grid simulation model to obtain multiple honeycomb hole grid simulation models; arranging and combining the multiple honeycomb hole grid simulation models according to a preset rule to obtain a honeycomb block grid simulation model that meets preset size requirements; adding a single degree of freedom discrete beam unit at the center position of each honeycomb hole grid in the honeycomb block grid simulation model to obtain a target honeycomb block simulation model.

[0077] Specifically, in the embodiment of the present invention, the size of a single honeycomb hole can be determined according to the design requirements or scaling ratio, and a grid simulation model of a single honeycomb hole can be constructed accordingly. By copying a single honeycomb hole grid and arranging and combining them according to a certain rule, a larger honeycomb block grid simulation model can be formed. In the embodiment of the present invention, the size of the honeycomb block grid simulation model is: length (L direction) 250mm, width (W direction) 250mm, thickness (T direction) 500mm, such as Figure 2 In addition, according to the actual application requirements, the size of the honeycomb block grid simulation model can be adjusted. In order to ensure the accuracy of the final model, the size of the honeycomb block used in the production process should be as close as possible to the size used in the honeycomb barrier in actual use, that is, the honeycomb block grid simulation model can be modified according to the actual design size of the honeycomb aluminum barrier.

[0078] It should be noted that in the honeycomb block grid simulation model, it is recommended to set at least three rows of grid units on each side of the honeycomb hole, and the honeycomb hole is best simulated as a quadrilateral shell unit (a unit type in finite element analysis, suitable for simulating thin shell structures, and can better reflect the mechanical properties of honeycomb aluminum).

[0079] Furthermore, if Figure 3 As shown, a single-degree-of-freedom discrete beam unit that runs through the depth of the honeycomb block grid simulation model is added to the center position of each honeycomb hole in the honeycomb block grid simulation model, thereby obtaining the target honeycomb block simulation model. Among them, the single-degree-of-freedom discrete beam unit consists of two nodes, and only generates forces along the directions of the two end points. The two end points are connected to the shell unit nodes at both ends of the skin or honeycomb hole using multi-point constraints. The multi-point constraint refers to the displacement of the beam unit node calculated by the weighted average of the displacement of the surrounding honeycomb block nodes according to the relative distance. Therefore, the beam unit can move and rotate with the honeycomb hole as a rigid body, and when the honeycomb hole is crushed, the beam unit can provide corresponding air resistance according to the compression rate and compression speed, that is, the beam unit can simulate the air effect in the honeycomb hole. Among them, the beam unit can be replaced by a spring unit, which is not specifically limited here.

[0080] It is understandable that the beam unit can be arranged in each honeycomb hole, which can move with the honeycomb hole as a rigid body and be compressed at the same time as the honeycomb hole. Since the hardware calculation efficiency of the discrete beam unit is very high, a large number of discrete beam units will not significantly increase the calculation time of the entire barrier finite element model. Since the number of discrete beam units is consistent with the number of honeycomb holes in the real barrier, the air effect is accurately and evenly dispersed in space like the physical barrier, which can improve the accuracy of the car collision simulation. For the honeycomb block grid simulation model with a small aperture, several holes can be used to share a beam unit model to improve the model calculation efficiency to a certain extent.

[0081] In step S102, a quasi-static operating condition test is performed, and based on the results of the quasi-static operating condition test and the target honeycomb block simulation model, a honeycomb block static extrusion target simulation model is constructed.

[0082] It is understandable that the quasi-static working condition test can be used to calibrate the crushing strength of honeycomb aluminum without air effect. According to the results of the quasi-static working condition test, a static extrusion target simulation model of the honeycomb block can be constructed.

[0083] To facilitate understanding, the following first explains in detail how to conduct a quasi-static operating condition test.

[0084] As a possible implementation method, in some embodiments, a quasi-static working condition test is carried out, including: placing the reinforced honeycomb aluminum block entity on the test bench in a preset direction, using a flat plate whose stiffness meets the preset stiffness requirements to extrude the reinforced honeycomb aluminum block entity in a preset extrusion direction at a preset speed condition, until the reinforced honeycomb aluminum block entity and the test machine pressure both meet the preset curve drawing starting conditions, and drawing the first contact force-displacement curve between the flat plate and the reinforced honeycomb aluminum block entity.

[0085] Specifically, the reinforced honeycomb aluminum block entity is placed on the test bench in the direction where the honeycomb holes are perpendicular to the ground (i.e., the preset direction). To reduce the influence of air, the contact surface between the test bench and the reinforced honeycomb aluminum block entity can be provided with exhaust holes or exhaust grooves. Then, a plate with high rigidity is used to extrude the reinforced honeycomb aluminum block entity at a speed of less than 5 mm / min (i.e., the preset speed condition). The extrusion process continues until the reinforced honeycomb aluminum block entity is completely compacted and the pressure of the test machine rises rapidly. The extrusion direction is parallel to the direction of the honeycomb holes. When the honeycomb aluminum is compacted to a certain extent, the pressure of the test machine (i.e., the force applied by the plate to the reinforced honeycomb aluminum block entity) will rise rapidly, indicating that the material has reached its bearing limit. The first contact force-displacement curve between the rigid plate and the reinforced honeycomb aluminum block entity is recorded and plotted in the experiment. This process can study the stiffness and strength characteristics of honeycomb aluminum under pressure, as well as its deformation and destructive behavior under gradually increasing pressure.

[0086] How to obtain the reinforced honeycomb aluminum block entity will be described in detail below.

[0087] In some embodiments, before conducting a quasi-static operating condition test, it also includes: making a honeycomb aluminum block entity that meets preset size requirements; establishing a skin or partition grid at both ends along the hole depth direction of the honeycomb aluminum block entity, and tightly fixing the two ends of the honeycomb aluminum block entity on the skin or partition grid to obtain a reinforced honeycomb aluminum block entity.

[0088] Specifically, before conducting the quasi-static working condition test, a honeycomb aluminum block entity can be made, and its overall size is the same as the honeycomb block grid simulation model established by simulation. Along the hole depth direction of the honeycomb aluminum block entity, one or more layers of skin (covering material, such as metal sheet) or partition grid (plate-like structure) are set at both ends of the honeycomb aluminum block entity. The bottom of the honeycomb aluminum block entity needs to be tightly fixed on the partition grid, which can be bonded by thick glue or asphalt to enhance the stability and bearing capacity of the structure. The bottom partition grid of the honeycomb aluminum block entity can be designed with flanges, etc., so that the honeycomb aluminum block entity will not be deformed when clamped during the test, thereby obtaining a reinforced honeycomb aluminum block entity.

[0089] It is understandable that due to the different apertures of different types of honeycomb aluminum, the aluminum foil grades, thicknesses and bonding glues used are different, resulting in different resistances caused by the air effect. Generally, the smaller the honeycomb aperture, the harder it is for air to leak during compression, and the greater the reaction force caused by the air effect. Therefore, it is necessary to conduct calibration tests and optimization for different types of honeycomb aluminum block entities.

[0090] After conducting the quasi-static operating condition test, a static extrusion target simulation model of the honeycomb block can be built based on the results of the quasi-static operating condition test. The building process will be described in detail below.

[0091] As a possible implementation method, in some embodiments, based on the results of the quasi-static working condition test and the target honeycomb block simulation model, a honeycomb block static extrusion target simulation model is constructed, including: based on the first contact force-displacement curve, adjusting the material, strength, thickness and failure parameters of the honeycomb block in the target honeycomb block simulation model, and when the second contact force-displacement curve of the flat plate in the target honeycomb block simulation model and the honeycomb block in the target honeycomb block simulation model coincides with the first contact force-displacement curve, a honeycomb block static extrusion target simulation model is obtained.

[0092] The result of the quasi-static working condition test is the first contact force-displacement curve between the rigid plate and the reinforced honeycomb aluminum block entity drawn by the quasi-static working condition test.

[0093] Specifically, appropriate simulation software is selected, and a target honeycomb block simulation model is established in the simulation software to carry out quasi-static working condition simulation tests. The basic physical properties such as material, strength and thickness of the honeycomb block in the target honeycomb block simulation model are set according to experimental data or data provided by material suppliers. The actual destructive behavior of the material is simulated by adjusting the material, strength, thickness and failure criteria (such as maximum stress criterion, maximum strain criterion) of the honeycomb block in the target honeycomb block simulation model. The material, strength, thickness and failure criteria of the honeycomb block in the target honeycomb block simulation model are iteratively adjusted so that the second contact force-displacement curve between the rigid plate and the honeycomb block in the simulation gradually approaches the first contact force-displacement curve. The target honeycomb block simulation model at this time is used as the static extrusion target simulation model of the honeycomb block.

[0094] In step S103, a dynamic working condition test is performed, and based on the results of the dynamic working condition test and the static extrusion target simulation model of the honeycomb block, a finite element model of the honeycomb block coupled with the air effect is constructed.

[0095] It is understandable that the dynamic working condition test can be used to detect the crushing strength of the honeycomb coupled air effect at different deformation speeds. According to the results of the dynamic working condition test and the honeycomb block static extrusion target simulation model, the honeycomb block coupled air effect finite element model can be constructed accordingly.

[0096] For ease of understanding, the following first explains in detail how to conduct a dynamic operating condition test.

[0097] As a possible implementation method, in some embodiments, a dynamic working condition test is carried out, including: placing the reinforced honeycomb aluminum block entity on a test bench in a preset direction, using a rigid plate with an acceleration sensor or a displacement sensor to sequentially extrude the reinforced honeycomb aluminum block entity at a first preset speed, a second preset speed, and a third preset speed to obtain a third contact force-displacement curve of the reinforced honeycomb aluminum block entity during dynamic deformation.

[0098] Specifically, the size of the reinforced honeycomb aluminum block entity used in the dynamic working condition test is consistent with that in the quasi-static working condition test, and structural glue is also used to bond the two ends of the honeycomb block to the partition to form a closed structure. If the final barrier design requires the use of a perforated partition at the bottom of the barrier, the same partition should also be used in the dynamic working condition test. The reinforced honeycomb aluminum block entity is fixed on the test bench in the direction where the honeycomb holes are perpendicular to the ground. A 20kg rigid plate is used to extrude the reinforced honeycomb aluminum block entity at speeds of 10m / s, 15m / s and 20m / s in turn. An acceleration sensor or displacement sensor is installed on the rigid plate, thereby obtaining the third contact force-displacement curve of the reinforced honeycomb aluminum block entity during dynamic deformation.

[0099] It should be noted that the weight of the rigid plate can be adjusted according to actual conditions. It is recommended that the crush rate of the honeycomb holes in the hole depth direction in the dynamic test should reach more than 80%. The extrusion speed can be adjusted according to actual conditions. In principle, it should be as close as possible to the collision speed of the honeycomb aluminum barrier during its final application. In addition, a drop test can be used instead of a uniform speed extrusion test, that is, a rigid plate is dropped vertically from a certain height to impact the reinforced honeycomb aluminum block entity.

[0100] After conducting the dynamic working condition test, a dynamic extrusion simulation model of the honeycomb block can be built based on the results of the dynamic working condition test and the static extrusion target simulation model of the honeycomb block. Then, the final honeycomb block finite element model of the coupled air effect can be obtained based on the dynamic extrusion simulation model of the honeycomb block. The construction process will be described in detail below.

[0101] As a possible implementation method, in some embodiments, based on the results of dynamic working condition tests and the honeycomb block static extrusion target simulation model, a honeycomb block finite element model coupled with air effects is constructed, including: obtaining a resistance-displacement curve caused by the air effect of the reinforced honeycomb aluminum block entity at different speeds according to the difference between the third contact force-displacement curve and the first contact force-displacement curve; inputting the resistance-displacement curve into the honeycomb block static extrusion target simulation model to obtain a honeycomb block dynamic extrusion simulation model; inputting a first preset curve and a second preset curve into a single degree of freedom discrete beam unit in the honeycomb block dynamic extrusion simulation model, and iteratively optimizing the honeycomb block dynamic extrusion simulation model based on the first preset curve and the second preset curve to obtain a honeycomb block finite element model coupled with air effects.

[0102] Among them, the result of the dynamic working condition test is the resistance-displacement curve caused by the air effect of the reinforced honeycomb aluminum block at different speeds.

[0103] Specifically, according to the crushing force-displacement curves of honeycomb aluminum under quasi-static and dynamic conditions (i.e., the first contact force-displacement curve and the third contact force-displacement curve) obtained from the two experiments, the quasi-static crushing force does not include the air effect, and the dynamic crushing force is coupled with the air effect. Since the strain rate effect of the aluminum foil in deformation can be ignored, the dynamic crushing force-displacement curve (i.e., the third contact force-displacement curve) is subtracted from the quasi-static crushing force-displacement curve (i.e., the first contact force-displacement curve) to obtain the resistance-displacement curve caused by the air effect of the reinforced honeycomb aluminum block entity at different speeds. Next, a dynamic working condition simulation test is carried out in the simulation software, and the resistance-displacement curve formed by the air effect at different speeds is input into the static extrusion target simulation model of the honeycomb block, so that the dynamic extrusion simulation model of the honeycomb block can be obtained. By dynamically extruding the dynamic extrusion target simulation model of the honeycomb block, the force of the beam unit can be calculated from the deformation speed and deformation of the beam unit in the dynamic extrusion target simulation model of the honeycomb block. Two curves (i.e., the first preset curve and the second preset curve) are input into the single-degree-of-freedom discrete beam unit in the dynamic extrusion target simulation model of the honeycomb block, such as Figure 4 As shown in (a), the first preset curve is used to constrain the relationship between speed and force, such as Figure 4 As shown in (b), the second preset curve is used to constrain the relationship between the scaling coefficient of the force and the crushing distance of the honeycomb hole (i.e., the deformation depth). Based on the first preset curve and the second preset curve, the dynamic extrusion simulation model of the honeycomb block is iteratively optimized to obtain a finite element model of the honeycomb block coupled with the air effect.

[0104] It can be understood that in the finite element model of the honeycomb block coupled with the air effect, the target discrete beam units are used to simulate the air effect in the honeycomb holes. These beam units can change accordingly with the loading and unloading of the honeycomb holes, and can reflect the influence of the air effect on the honeycomb block through specific loading and unloading curves. During the unloading process, the beam unit can drop from the peak position to zero according to the quadratic curve. At this time, the intersection of the unloading curve and the x-axis has a certain offset relative to the origin, which reflects the energy dissipation or structural deformation that may exist during the unloading process.

[0105] In step S104, based on the honeycomb block finite element model of coupled air effect, according to the preset skin grid and the preset connection relationship, the overall model of the honeycomb aluminum barrier is generated.

[0106] It is understandable that the resistance caused by the air effect in honeycomb blocks with different apertures, different sizes, and different impact speeds will be different. The honeycomb blocks during model development and benchmarking should be as close as possible to the final design state of the barrier to improve the model accuracy. Based on the honeycomb block finite element model of coupled air effect completed by benchmarking, the mesh of components such as skins and adhesives and the necessary connection relationships can be added to complete the overall model of the honeycomb aluminum barrier.

[0107] In order to facilitate those skilled in the art to further understand the model construction method for simulating the air effect in the honeycomb aluminum barrier proposed in the embodiment of the present invention, the following is combined with Figure 5 For further elaboration.

[0108] like Figure 5 As shown, the model construction method for simulating the air effect in the honeycomb aluminum barrier can also include the following steps:

[0109] Step S501, building a honeycomb grid simulation model.

[0110] Step S502, building a honeycomb block grid simulation model.

[0111] Step S503, adding a single degree of freedom discrete beam unit to the middle of each honeycomb hole of the honeycomb block grid simulation model.

[0112] Step S504, performing a quasi-static operating condition test of the honeycomb block.

[0113] Step S505, building a honeycomb block static extrusion target simulation model.

[0114] Step S506, performing a dynamic operating condition test of the honeycomb block.

[0115] Step S507, building a honeycomb block dynamic extrusion target simulation model.

[0116] Step S508, obtaining a honeycomb block finite element model coupled with air effect.

[0117] Step S509, building an overall model of the honeycomb aluminum barrier.

[0118] According to the model construction method for simulating the air effect in the honeycomb aluminum barrier proposed in the embodiment of the present invention, by conducting a quasi-static working condition test, a static extrusion target simulation model of the honeycomb block can be constructed based on the results of the quasi-static working condition test and the target honeycomb block simulation model containing a single degree of freedom discrete beam unit; and by conducting a dynamic working condition test, a honeycomb block finite element model of coupled air effect can be constructed based on the results of the dynamic working condition test and the static extrusion target simulation model of the honeycomb block; based on the honeycomb block finite element model of coupled air effect, according to the preset skin grid and the preset connection relationship, the overall model of the honeycomb aluminum barrier can be generated. In this way, the problems of inaccurate simulation results of automobile collision and inaccurate body deformation in the prior art are solved, the accuracy of automobile collision simulation is improved, and the calculation accuracy and efficiency of the barrier working condition are optimized.

[0119] Next, a model building device for simulating the air effect in a honeycomb aluminum barrier proposed in an embodiment of the present invention will be described with reference to the accompanying drawings.

[0120] Figure 6It is a block diagram of a model building device for simulating air effects in a honeycomb aluminum barrier according to an embodiment of the present invention.

[0121] like Figure 6 As shown, the model building device 10 for simulating the air effect in the honeycomb aluminum barrier includes: a building module 100, a first building module 200, a second building module 300 and a generating module 400.

[0122] Among them, the building module 100 is used to build a target honeycomb block simulation model containing a single-degree-of-freedom discrete beam unit;

[0123] The first construction module 200 is used to perform a quasi-static working condition test, and to construct a static extrusion target simulation model of a honeycomb block based on the results of the quasi-static working condition test and the target honeycomb block simulation model;

[0124] The second construction module 300 is used to perform a dynamic working condition test, and to construct a honeycomb block finite element model coupled with air effect based on the results of the dynamic working condition test and the honeycomb block static extrusion target simulation model;

[0125] The generation module 400 is used to generate a honeycomb aluminum barrier overall model based on a honeycomb block finite element model of coupled air effect, according to a preset skin grid and a preset connection relationship.

[0126] According to one embodiment of the present invention, the building module 100 is specifically used for:

[0127] Building a single honeycomb hole grid simulation model, and duplicating the single honeycomb hole grid simulation model to obtain multiple honeycomb hole grid simulation models;

[0128] Arrange and combine multiple honeycomb hole grid simulation models according to a preset rule to obtain a honeycomb block grid simulation model that meets the preset size requirements;

[0129] A single degree of freedom discrete beam unit is added to the center position of each honeycomb hole grid in the honeycomb block grid simulation model to obtain the target honeycomb block simulation model.

[0130] According to one embodiment of the present invention, before performing the quasi-static working condition test, the first building module 200 is further used to:

[0131] Make a honeycomb aluminum block entity that meets the preset size requirements;

[0132] A skin or partition grid is established at both ends of the honeycomb aluminum block entity along the hole depth direction, and both ends of the honeycomb aluminum block entity are tightly fixed on the skin or partition grid to obtain a reinforced honeycomb aluminum block entity.

[0133] According to one embodiment of the present invention, the first building module 200 is specifically used for:

[0134] The reinforced honeycomb aluminum block entity is placed on the test bench in a preset direction, and a flat plate whose stiffness meets the preset stiffness requirements is used to extrude the reinforced honeycomb aluminum block entity in a preset extrusion direction at a preset speed until the reinforced honeycomb aluminum block entity and the pressure of the testing machine meet the preset curve drawing starting conditions, and the first contact force-displacement curve between the flat plate and the reinforced honeycomb aluminum block entity is drawn.

[0135] According to one embodiment of the present invention, the first building module 200 is specifically used for:

[0136] Based on the first contact force-displacement curve, the material, strength, thickness and failure parameters of the honeycomb block in the target honeycomb block simulation model are adjusted. When the second contact force-displacement curve of the flat plate in the target honeycomb block simulation model and the honeycomb block in the target honeycomb block simulation model coincides with the first contact force-displacement curve, a honeycomb block static extrusion target simulation model is obtained.

[0137] According to one embodiment of the present invention, the second building module 300 is specifically used for:

[0138] The reinforced honeycomb aluminum block entity is placed on the test bench in a preset direction, and a rigid plate with an acceleration sensor or a displacement sensor is used to extrude the reinforced honeycomb aluminum block entity at a first preset speed, a second preset speed, and a third preset speed in sequence to obtain a third contact force-displacement curve of the reinforced honeycomb aluminum block entity during dynamic deformation.

[0139] According to one embodiment of the present invention, the second building module 300 is specifically used for:

[0140] According to the difference between the third contact force-displacement curve and the first contact force-displacement curve, the resistance-displacement curve caused by the air effect of the reinforced honeycomb aluminum block at different speeds is obtained;

[0141] The resistance-displacement curve is input into the static extrusion target simulation model of the honeycomb block to obtain the dynamic extrusion simulation model of the honeycomb block;

[0142] A first preset curve and a second preset curve are input into a single degree of freedom discrete beam unit in a honeycomb block dynamic extrusion simulation model, and the honeycomb block dynamic extrusion simulation model is iteratively optimized based on the first preset curve and the second preset curve to obtain a honeycomb block finite element model coupled with air effect.

[0143] It should be noted that the aforementioned explanation of the embodiment of the model building method for simulating the air effect in the honeycomb aluminum barrier is also applicable to the model building device for simulating the air effect in the honeycomb aluminum barrier of this embodiment, and will not be repeated here.

[0144] According to the model building device for simulating the air effect in the honeycomb aluminum barrier proposed in the embodiment of the present invention, by conducting a quasi-static working condition test, a static extrusion target simulation model of the honeycomb block can be constructed based on the results of the quasi-static working condition test and the target honeycomb block simulation model containing a single degree of freedom discrete beam unit; and by conducting a dynamic working condition test, a honeycomb block finite element model of coupled air effect can be constructed based on the results of the dynamic working condition test and the static extrusion target simulation model of the honeycomb block; based on the honeycomb block finite element model of coupled air effect, according to the preset skin grid and the preset connection relationship, the overall model of the honeycomb aluminum barrier can be generated. Thus, the problems of inaccurate simulation results of automobile collision and inaccurate body deformation in the prior art are solved, the accuracy of automobile collision simulation is improved, and the calculation accuracy and efficiency of the barrier working condition are optimized.

[0145] Figure 7 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. The electronic device may include:

[0146] A memory 701 , a processor 702 , and a computer program stored in the memory 701 and executable on the processor 702 .

[0147] When the processor 702 executes the program, the model building method for simulating the air effect in the honeycomb aluminum barrier provided in the above embodiment is implemented.

[0148] Furthermore, the electronic device further comprises:

[0149] The communication interface 703 is used for communication between the memory 701 and the processor 702 .

[0150] The memory 701 is used to store computer programs that can be executed on the processor 702 .

[0151] The memory 701 may include a high-speed RAM (Random Access Memory) memory, and may also include a non-volatile memory, such as at least one disk memory.

[0152] If the memory 701, the processor 702 and the communication interface 703 are implemented independently, the communication interface 703, the memory 701 and the processor 702 can be connected to each other through a bus and communicate with each other. The bus can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 7 Only one thick line is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0153] Optionally, in a specific implementation, if the memory 701, the processor 702 and the communication interface 703 are integrated on a chip, the memory 701, the processor 702 and the communication interface 703 can communicate with each other through an internal interface.

[0154] The processor 702 may be a CPU (Central Processing Unit), or an ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present invention.

[0155] An embodiment of the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the above-mentioned model construction method for simulating the air effect in the honeycomb aluminum barrier.

[0156] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0157] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0158] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A method for constructing a model for simulating air effects in a honeycomb aluminum barrier, characterized in that: The following steps are involved: Build a simulation model of the target honeycomb block containing single-degree-of-freedom discrete beam elements; Conducting a quasi-static working condition test, and constructing a static extrusion target simulation model of a honeycomb block based on the results of the quasi-static working condition test and the target honeycomb block simulation model; Conducting a dynamic working condition test, and constructing a honeycomb block finite element model coupled with air effect based on the results of the dynamic working condition test and the honeycomb block static extrusion target simulation model; Based on the honeycomb block finite element model of the coupled air effect, according to the preset skin grid and the preset connection relationship, the overall model of the honeycomb aluminum barrier is generated; The construction of the target honeycomb block simulation model containing the single-degree-of-freedom discrete beam unit includes: constructing a single honeycomb hole grid simulation model, and duplicating the single honeycomb hole grid simulation model to obtain multiple honeycomb hole grid simulation models; arranging and combining the multiple honeycomb hole grid simulation models according to a preset rule to obtain a honeycomb block grid simulation model that meets the preset size requirements; adding the single-degree-of-freedom discrete beam unit at the center position of each honeycomb hole grid in the honeycomb block grid simulation model to obtain the target honeycomb block simulation model; The single-degree-of-freedom discrete beam unit is composed of two nodes, generating forces along the directions of two end points, and the two end points are connected to the shell unit nodes at both ends of the skin or honeycomb hole using multi-point constraints, and the multi-point constraints refer to that the displacement of the beam unit node is calculated by the weighted average of the displacement of the surrounding honeycomb block nodes according to the relative distance, and the single-degree-of-freedom discrete beam unit moves and rotates as a rigid body with each honeycomb hole grid, and when the honeycomb hole is crushed, the single-degree-of-freedom discrete beam unit provides corresponding air resistance according to the compression rate and compression speed, so as to use the single-degree-of-freedom discrete beam unit to simulate the air effect in each honeycomb hole grid; Among them, the finite element model of the honeycomb block coupled with the air effect is constructed based on the results of the dynamic working condition test and the honeycomb block static extrusion target simulation model, including: according to the difference between the third contact force-displacement curve and the first contact force-displacement curve, the resistance-displacement curve caused by the air effect of the reinforced honeycomb aluminum block entity at different speeds is obtained; the resistance-displacement curve is input into the honeycomb block static extrusion target simulation model to obtain the honeycomb block dynamic extrusion simulation model; the first preset curve and the second preset curve are input into the single degree of freedom discrete beam unit in the honeycomb block dynamic extrusion simulation model, and the honeycomb block dynamic extrusion simulation model is iteratively optimized based on the first preset curve and the second preset curve to obtain the honeycomb block finite element model coupled with the air effect.

2. The model construction method for simulating the air effect in the honeycomb aluminum barrier according to claim 1, characterized in that: Before conducting the quasi-static working condition test, the following steps are also included: Make a honeycomb aluminum block entity that meets the preset size requirements; A skin or partition grid is established at both ends of the honeycomb aluminum block entity along the hole depth direction, and both ends of the honeycomb aluminum block entity are tightly fixed on the skin or the partition grid to obtain a reinforced honeycomb aluminum block entity.

3. The model construction method for simulating the air effect in the honeycomb aluminum barrier according to claim 2, characterized in that: The quasi-static working condition test comprises: The reinforced honeycomb aluminum block entity is placed on the test bench in a preset direction, and a flat plate whose stiffness meets the preset stiffness requirements is used to extrude the reinforced honeycomb aluminum block entity in a preset extrusion direction at a preset speed until the reinforced honeycomb aluminum block entity and the pressure of the testing machine meet the preset curve drawing starting conditions, and the first contact force-displacement curve between the flat plate and the reinforced honeycomb aluminum block entity is drawn.

4. The model construction method for simulating the air effect in the honeycomb aluminum barrier according to claim 3, characterized in that: The method of benchmarking and constructing a static extrusion target simulation model of a honeycomb block based on the result of the quasi-static working condition test and the target honeycomb block simulation model comprises: Based on the first contact force-displacement curve, the material, strength, thickness and failure parameters of the honeycomb block in the target honeycomb block simulation model are adjusted, and when the second contact force-displacement curve of the flat plate in the target honeycomb block simulation model and the honeycomb block in the target honeycomb block simulation model coincides with the first contact force-displacement curve, the static extrusion target simulation model of the honeycomb block is obtained.

5. The model construction method for simulating the air effect in the honeycomb aluminum barrier according to claim 2, characterized in that: The dynamic working condition test comprises: The reinforced honeycomb aluminum block entity is placed on the test bench in a preset direction, and a rigid plate with an acceleration sensor or a displacement sensor is used to extrude the reinforced honeycomb aluminum block entity at a first preset speed, a second preset speed and a third preset speed in sequence to obtain a third contact force-displacement curve of the reinforced honeycomb aluminum block entity during dynamic deformation.

6. A model building device for simulating the air effect in a honeycomb aluminum barrier, characterized in that: include: A building module is used to build a simulation model of a target honeycomb block containing single-degree-of-freedom discrete beam elements; The first construction module is used to perform a quasi-static working condition test, and to construct a static extrusion target simulation model of a honeycomb block based on the results of the quasi-static working condition test and the target honeycomb block simulation model; The second construction module is used to conduct a dynamic working condition test, and to construct a honeycomb block finite element model coupled with air effect based on the results of the dynamic working condition test and the honeycomb block static extrusion target simulation model; A generation module, for generating an overall model of a honeycomb aluminum barrier based on the honeycomb block finite element model of the coupled air effect and according to a preset skin grid and a preset connection relationship; The building module is specifically used to: build a single honeycomb hole grid simulation model, and copy the single honeycomb hole grid simulation model to obtain multiple honeycomb hole grid simulation models; arrange and combine the multiple honeycomb hole grid simulation models according to a preset rule to obtain a honeycomb block grid simulation model that meets the preset size requirements; add the single-degree-of-freedom discrete beam unit at the center position of each honeycomb hole grid in the honeycomb block grid simulation model to obtain the target honeycomb block simulation model; The single-degree-of-freedom discrete beam unit is composed of two nodes, generating forces along the directions of two end points, and the two end points are connected to the shell unit nodes at both ends of the skin or honeycomb hole using multi-point constraints, and the multi-point constraints refer to that the displacement of the beam unit node is calculated by the weighted average of the displacement of the surrounding honeycomb block nodes according to the relative distance, and the single-degree-of-freedom discrete beam unit moves and rotates as a rigid body with each honeycomb hole grid, and when the honeycomb hole is crushed, the single-degree-of-freedom discrete beam unit provides corresponding air resistance according to the compression rate and compression speed, so as to use the single-degree-of-freedom discrete beam unit to simulate the air effect in each honeycomb hole grid; Among them, the second construction module is specifically used to: obtain the resistance-displacement curve caused by the air effect of the reinforced honeycomb aluminum block entity at different speeds according to the difference between the third contact force-displacement curve and the first contact force-displacement curve; input the resistance-displacement curve into the static extrusion target simulation model of the honeycomb block to obtain the dynamic extrusion simulation model of the honeycomb block; input the first preset curve and the second preset curve into the single-degree-of-freedom discrete beam unit in the dynamic extrusion simulation model of the honeycomb block, iteratively optimize the dynamic extrusion simulation model of the honeycomb block based on the first preset curve and the second preset curve, and obtain the honeycomb block finite element model coupled with the air effect.

7. An electronic device, characterized in that: include: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement a model building method for simulating air effects in a honeycomb aluminum barrier as described in any one of claims 1 to 5.

8. A computer-readable storage medium having a computer program stored thereon, characterized in that: The program is executed by a processor to implement a model building method for simulating air effects in a honeycomb aluminum barrier as described in any one of claims 1 to 5.

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