A method, device, equipment and storage medium for selecting a bolt structure

Abstract

The application discloses a bolt structure part selection method, device, equipment and storage medium. The method comprises the following steps: obtaining bolt parameters of selected bolts and hardware structure parameters corresponding to at least two preset bolt structure parts respectively; performing finite element simulation according to the bolt parameters and the hardware structure parameters to determine load mapping data; and determining a target bolt structure part matched with the selected bolt according to actual load borne by an assembly part and the load mapping data; wherein the load mapping data represents a mapping relationship between the hardware structure parameters under the bolt parameters and simulation load of a bolt connection structure, and the bolt connection structure is a connection structure formed by the selected bolt and the preset bolt structure part. The embodiment of the application solves the problem of single selection standard of the bolt structure part, so that the bolt connection structure assembled according to the bolt and the selected bolt structure part meets the requirement of load performance, thereby improving the stability and use safety of the bolt connection structure.

Description

Technical Field

[0001] This invention relates to the field of bolt structure technology, and in particular to a method, apparatus, equipment and storage medium for selecting bolt structural components. Background Technology

[0002] Bolted structural components refer to a general term for mechanical parts used in conjunction with bolts to achieve bolted connections. Bolted structural components include different combinations such as nuts, assembly parts with through holes, and assembly parts with threaded holes.

[0003] In traditional technology, the selection of bolt structural components mainly considers the matching degree between the bolt structural components and the bolts in terms of hardware dimensions, such as whether the thickness of the bolt plate of the assembly parts matches the bolt length, and whether the thread diameter of the bolt structural components matches the bolt diameter, etc.

[0004] However, simply matching the hardware dimensions can only satisfy the assemblability of the assembled parts, but cannot guarantee that the structural performance requirements of the assembled bolted connection structure will be met. Summary of the Invention

[0005] This invention provides a method, apparatus, equipment, and storage medium for selecting bolt structural components, in order to solve the problem of a single standard for selecting bolt structural components, and to ensure that the bolted connection structure assembled according to the bolt and the selected bolt structural component meets the requirements of load performance.

[0006] According to one embodiment of the present invention, a method for selecting bolt structural components is provided, the method comprising:

[0007] Obtain the bolt parameters of the selected bolt and the hardware structure parameters corresponding to at least two preset bolt structures;

[0008] Finite element simulation is performed based on the bolt parameters and the hardware structure parameters to determine the load mapping data.

[0009] Based on the actual load borne by the assembled parts and the load mapping data, determine the target bolt structure that matches the selected bolt;

[0010] The load mapping data represents the mapping relationship between the hardware structural parameters under the bolt parameters and the simulated load of the bolt connection structure, and the bolt connection structure is the connection structure composed of the selected bolt and the preset bolt structural component.

[0011] According to another embodiment of the present invention, a selection device for bolt structural members is provided, the device comprising:

[0012] The hardware structure parameter acquisition module is used to acquire the bolt parameters of the selected bolts and the hardware structure parameters corresponding to at least two preset bolt structure components.

[0013] The load mapping data determination module is used to determine the load mapping data by performing finite element simulation based on the bolt parameters and the hardware structure parameters.

[0014] The target bolt structure component determination module is used to determine the target bolt structure component that matches the selected bolt based on the actual load borne by the assembled parts and the load mapping data.

[0015] The load mapping data represents the mapping relationship between the hardware structural parameters under the bolt parameters and the simulated load of the bolt connection structure, and the bolt connection structure is the connection structure composed of the selected bolt and the preset bolt structural component.

[0016] According to another embodiment of the present invention, an electronic device is provided, the electronic device comprising:

[0017] At least one processor; and

[0018] A memory communicatively connected to the at least one processor; wherein,

[0019] The memory stores a computer program that can be executed by the at least one processor, which enables the at least one processor to perform the bolt structure selection method according to any embodiment of the present invention.

[0020] According to another embodiment of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions, the computer instructions being configured to cause a processor to execute and implement the bolt structure selection method according to any embodiment of the present invention.

[0021] The technical solution of this invention obtains the bolt parameters of the selected bolt and the hardware structural parameters corresponding to at least two preset bolt structural components. Finite element simulation is performed based on the bolt parameters and each hardware structural parameter to determine load mapping data. Based on the actual load borne by the assembled parts and the load mapping data, a target bolt structural component matching the selected bolt is determined. The load mapping data characterizes the mapping relationship between each hardware structural parameter under the bolt parameters and the simulated load of the bolt connection structure. The bolt connection structure is a connection structure composed of the selected bolt and preset bolt structural components. This solves the problem of a single standard for bolt structural component selection, ensuring that the bolt connection structure assembled based on the bolt and the selected bolt structural component meets the load performance requirements, thereby improving the stability and safety of the bolt connection structure.

[0022] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 A flowchart illustrating a method for selecting bolt structural components according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of a bolt structure assembly provided in one embodiment of the present invention;

[0026] Figure 3 A flowchart illustrating another method for selecting bolt structural components according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of a bolted connection structure model provided in one embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram of a load displacement provided in one embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of a load variation curve provided in one embodiment of the present invention;

[0030] Figure 7 This is a schematic diagram of a variable load curve provided in one embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of a bolt structural component selection device provided in one embodiment of the present invention;

[0032] Figure 9 This is a schematic diagram of the structure of an electronic device provided in one embodiment of the present invention. Detailed Implementation

[0033] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "preset," "target," "reference," etc., used in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0035] Figure 1 This is a flowchart illustrating a bolt structural component selection method according to an embodiment of the present invention. This embodiment is applicable to the selection of bolt structural components used in conjunction with selected bolts. The method can be executed by a bolt structural component selection device, which can be implemented in hardware and / or software and can be configured in a terminal device. Figure 1 As shown, the method includes:

[0036] S110. Obtain the bolt parameters of the selected bolt and the hardware structure parameters corresponding to at least two preset bolt structural components.

[0037] For example, bolt parameters include, but are not limited to, bolt type, bolt size, bolt stiffness, elastic modulus and thread pattern. There are no restrictions on bolt parameters here, and they can be customized according to actual needs.

[0038] In this embodiment, at least two preset bolt structural components are bolt structural components that match the selected bolt in terms of hardware dimensions. The selection of bolt structural components provided in this embodiment is a further selection of at least two preset bolt structural components that match the hardware dimensions.

[0039] In one alternative embodiment, each preset bolt structure includes a bolt structure combination, which represents a combination of at least one of the following structures: a nut, an assembly part with a through hole, and an assembly part with a threaded hole.

[0040] For example, the bolt structure combination can be one of four combinations: nut and assembly part with through hole, assembly part with threaded hole, assembly part with through hole and assembly part with threaded hole, nut, assembly part with through hole, and assembly part with threaded hole.

[0041] Figure 2 This is a schematic diagram of a bolt structure assembly provided in one embodiment of the present invention. Specifically, Figure 2 The horizontal and vertical striped boxes in the diagram represent assembly parts with through holes, the diagonal striped boxes represent assembly parts with threaded holes, and the black squares represent nuts. Correspondingly... Figure 2 Figure A shows the combination of a nut and an assembly part with a through hole; Figure B shows the combination of an assembly part with a threaded hole; Figure C shows the combination of an assembly part with a through hole and an assembly part with a threaded hole; and Figure D shows the combination of a nut, an assembly part with a through hole, and an assembly part with a threaded hole.

[0042] In another optional embodiment, each preset bolt structure includes at least two bolt structure combinations. Specifically, each bolt structure combination is at least two of the following four combination forms: nut and assembly part with through hole, assembly part with threaded hole, assembly part with through hole and assembly part with threaded hole, nut, assembly part with through hole and assembly part with threaded hole.

[0043] Specifically, the combination of bolt structural components may vary depending on the type of bolts used and the assembly requirements. No restrictions are placed on the preset bolt structure combinations here; custom settings can be made based on the compatibility of bolts and bolt structural components.

[0044] The advantage of setting at least two bolt structure combinations is that it ensures that at least one bolt structure combination has a target bolt structure that meets the selection matching conditions among the multiple preset bolt structure components, thus broadening the selection range of bolt structure components and improving the success rate of bolt structure component selection.

[0045] Specifically, hardware structural parameters are used to characterize parameters related to the structural hardware of the preset bolt structural component. In one optional embodiment, the hardware structural parameters include basic structural parameters and variable structural parameters.

[0046] Specifically, variable structural parameters are used to characterize structural parameters whose structural parameter values ​​differ from those of at least one other preset bolt structural component in the same bolt structural combination, while basic structural parameters are used to characterize structural parameters whose structural parameter values ​​are the same among all preset bolt structural components in the same bolt structural combination.

[0047] For example, basic structural parameters include, but are not limited to, the thread pattern, nut density, nut stiffness, nut type, and elastic modulus corresponding to the nut; the part style, part size, part density, and elastic modulus corresponding to the assembly part with the through hole; and the thread pattern, part size, part style, part density, and elastic modulus corresponding to the assembly part with the threaded hole. The basic structural parameters are not limited here; they can be customized according to actual needs.

[0048] In one optional embodiment, the variable structural parameters characterize the variable parameters related to the hardware strength of the bolt structure in the hardware structural parameters. Accordingly, the variable structural parameters include at least one of the following: thread length and nut material corresponding to the nut, through hole plate thickness corresponding to the assembly part with through hole, part material and part fracture parameters, and threaded plate thickness, part material and part fracture parameters corresponding to the assembly part with threaded hole.

[0049] Specifically, the thickness of the threaded plate is used to characterize the thread length in the threaded hole. For example, when the threaded hole is a through thread, the thickness of the threaded plate is the same as the thickness of the threaded hole. When the threaded hole is a countersunk hole, the thickness of the threaded plate is equal to the difference between the thickness of the threaded hole and the bolt head length.

[0050] In another alternative embodiment, the variable structural parameters characterize the variable parameters in the hardware structural parameters that are related to the hardware stability of the bolt structure. Accordingly, the variable structural parameters include the thread pattern and number of nuts corresponding to nuts, the number of through holes corresponding to assembly parts with through holes, and the thread pattern and number of threaded holes corresponding to assembly parts with threaded holes.

[0051] In one embodiment, when the bolt structure is combined with a nut and an assembly part with a through hole, the number of nuts is the same as the number of through holes; when the bolt structure is combined with an assembly part with a through hole and an assembly part with a threaded hole, the number of through holes is the same as the number of threaded holes; and when the bolt structure is combined with a nut, an assembly part with a through hole, and an assembly part with a threaded hole, the number of nuts, the number of through holes, and the number of threaded holes are the same.

[0052] In this embodiment, the variable structural parameters represent the variable parameters of the bolt structure model in the finite element simulation experiment. One or more variable structural parameters can all belong to structural parameters related to a certain hardware performance, or they can belong to structural parameters related to different hardware performances. Here, the hardware performance to which different variable parameters belong is not limited, and the hardware performance can be customized and extended according to actual needs.

[0053] For example, if the structural parameter A is the same for all the preset bolt structural components under the same bolt structural combination, then structural parameter A is a basic structural parameter. If the structural parameter A is different for all the preset bolt structural components under the same bolt structural combination, then structural parameter A is a variable structural parameter.

[0054] Table 1 is a list of hardware structural parameters corresponding to k types of bolt structural components under the same bolt structure combination provided in an embodiment of the present invention.

[0055]

[0056] Taking Table 1 as an example, the basic structural parameters in the hardware structural parameters corresponding to the preset bolt structural components include the nut model and part style, while the variable structural parameters include the nut material and the thickness of the through hole plate.

[0057] S120. Perform finite element simulation based on bolt parameters and various hardware structural parameters to determine load mapping data.

[0058] Finite element method (FEM) simulation is a technique used to simulate the usage behavior of complex application systems and thus evaluate system performance. Specifically, FEM uses mathematical models to describe the usage behavior of each subsystem within a complex application system. For example, the mathematical model can be a physical model, a chemical model, or another scientific model. In FEM simulation, the usage behavior of each subsystem is solved using a finite number of discrete points or meshes, which define the shape and size of the subsystem. By calculating these points or meshes, the usage behavior of each subsystem can be calculated, and then these usage behaviors can be combined to obtain the usage behavior of the entire complex application system.

[0059] In this embodiment, the load mapping data characterizes the mapping relationship between the hardware structural parameters under the bolt parameters and the simulated load of the bolt connection structure. The bolt connection structure is a connection structure composed of selected bolts and preset bolt structural components. The simulated load is used to characterize the load force applied to the bolt connection structure during the finite element simulation process.

[0060] S130. Based on the actual load and load mapping data borne by the assembled parts, determine the target bolt structure that matches the selected bolt.

[0061] Specifically, based on the load mapping data, at least one reference bolt structure is determined that the simulated load meets the preset load conditions; when there is only one reference bolt structure, the reference bolt structure is used as the target bolt structure to match the selected bolt; when there are at least two reference bolt structures, the target bolt structure to match the selected bolt is determined based on the preset screening conditions and the hardware structural parameters corresponding to the at least two reference bolt structures.

[0062] Specifically, the preset load condition is that the simulated load is greater than the actual load borne by the assembled parts, or the preset load condition is a simulated load range constructed based on the load ratio range and the actual load borne by the assembled parts. For example, the load ratio range can be [100%, 150%]. The specific parameter value of the load ratio range is not limited here and can be customized according to actual needs.

[0063] For example, the preset filtering conditions include, but are not limited to, at least one of the following: the fewest types of structural components in the bolt structure combination, the smallest through hole plate thickness, the fewest number of nuts, the shortest thread length, the lowest material price, and the smallest bolt plate thickness. The preset filtering conditions are not limited here and can be customized according to actual needs.

[0064] The technical solution of this embodiment obtains the bolt parameters of the selected bolt and the hardware structural parameters corresponding to at least two preset bolt structural components. Finite element simulation is performed based on the bolt parameters and each hardware structural parameter to determine load mapping data. Based on the actual load borne by the assembled parts and the load mapping data, a target bolt structural component matching the selected bolt is determined. The load mapping data characterizes the mapping relationship between each hardware structural parameter under the bolt parameters and the simulated load of the bolt connection structure. The bolt connection structure is a connection structure composed of the selected bolt and preset bolt structural components. This solves the problem of a single standard for bolt structural component selection, ensuring that the bolt connection structure assembled based on the bolt and the selected bolt structural component meets the load performance requirements. Furthermore, by configuring different variable structural parameters, it can be further ensured that the bolt connection structure specifically meets the load strength performance or load stability performance, thereby improving the stability and safety of the bolt connection structure.

[0065] Figure 3 This is a flowchart illustrating another method for selecting bolted structural components according to an embodiment of the present invention. This embodiment further refines the step of "performing finite element simulation based on bolt parameters and various hardware structural parameters to determine load mapping data" in the above embodiment. For example... Figure 3 As shown, the method includes:

[0066] S210. Obtain the bolt parameters of the selected bolt and the hardware structure parameters corresponding to at least two preset bolt structural components.

[0067] S210 in this embodiment is the same as that in the above embodiment. Figure 1 The S110 shown is the same or similar, and will not be described again in this embodiment.

[0068] Based on the above embodiments, optionally, the bolt parameters include basic bolt parameters and variable bolt parameters, and the variable bolt parameters include bolt type and / or bolt preload.

[0069] Specifically, the basic bolt parameters are used to characterize the basic parameters whose bolt parameter values ​​are the same in all finite element simulation experiments, while the variable bolt parameters are used to characterize the variable parameters whose bolt parameter values ​​differ in all finite element simulation experiments. The variable bolt parameters can also be used to characterize the variable parameters of the bolt model in the finite element simulation experiment.

[0070] For example, basic bolt parameters include, but are not limited to, bolt size, bolt stiffness, elastic modulus, and thread pattern.

[0071] For example, if the bolt parameter A has the same value in all finite element simulation experiments, then the structural parameter A is the basic bolt parameter; if the structural parameter A has different values ​​in all finite element simulation experiments, then the structural parameter A is the variable bolt parameter.

[0072] The advantage of this setup is that if there are no hardware structural parameters in the load mapping data that match the actual load, the selection of bolt structural components will fail. However, this embodiment sets variable bolt parameters in the bolt parameters, which increases the dimension of parameter variables in the load mapping data and improves the diversity of bolt parameters in the load mapping data. This broadens the selection range of bolt structural components obtained by matching the actual load and improves the success rate of bolt structural component selection.

[0073] S220. Using finite element simulation software, at least two bolt connection structure models are constructed based on bolt parameters and various hardware structural parameters.

[0074] Specifically, finite element simulation software is used to construct a bolt model based on bolt parameters, and bolt structural component models are constructed based on at least two hardware structural parameters. The bolt model and each bolt structural component model together constitute the bolt connection structure model.

[0075] For example, finite element simulation software can be used to set the simulation parameters for each bolted connection structure model. This includes using a preset mesh generation algorithm to mesh the bolted connection structure model; setting the simulation state of the bolted connection structure model to quasi-static; setting the contact type of the bolted connection structure model to a general contact type; setting the tangential representation of the bolted connection structure model to the penalty function method; setting the normal representation of the bolted connection structure model to hard contact; fixing all degrees of freedom of the assembly parts model in the bolted connection structure model; setting the initial mode of the bolt model in the bolted connection structure model to the preload mode, etc.

[0076] The simulation parameters for the bolted connection structure model are not limited here; they can be customized according to actual needs.

[0077] Figure 4 This is a schematic diagram of a bolted connection structure model provided in one embodiment of the present invention. Specifically, Figure 4 The bolt model shown in the bolt connection structure model is a hexagon socket head cap screw. The assembly parts with threaded holes are the operating arm and the rotating shaft. The threaded holes on the operating arm are countersunk holes. The hexagon socket head cap screw fastens the operating arm and the rotating shaft through the countersunk holes on the operating arm. The operating arm is made of aluminum alloy, and the rotating shaft is made of alloy structural steel.

[0078] S230. For each bolted connection structure model, apply load displacement to the bolted connection structure model to obtain the load change curve of the load force as a function of the load displacement.

[0079] Specifically, the load displacement can be lateral load displacement and / or longitudinal load displacement. The direction of the load displacement can be towards the bolted connection structure model or outward from the bolted connection structure model. When the load displacement is towards the bolted connection structure model, the load force generated on the bolted connection structure model is compressive; when the load displacement is outward from the bolted connection structure model, the load force generated on the bolted connection structure model is tensile. The direction of the load displacement is not limited here and can be customized according to actual needs.

[0080] Figure 5 This is a schematic diagram of a load displacement provided in one embodiment of the present invention. Figure 5 by Figure 4 Taking the bolted connection structure model shown as an example, Figure 5 The left figure shows the load displacement applied to the bolted connection structure model. The load displacement generates a longitudinal tensile force perpendicular to the axis of rotation. Figure 5 The right figure shows that when the load force generated by the load displacement is greater than the maximum load force that the bolted connection structure model can withstand, the bolted connection structure model will break.

[0081] Figure 6 This is a schematic diagram of a load variation curve provided in one embodiment of the present invention. Specifically, Figure 6 by Figure 5 Taking the load displacement shown as an example, the horizontal axis of the load change curve represents the load displacement applied to the bolted connection structure model, and the vertical axis represents the magnitude of the load force generated by the load displacement on the bolted connection structure model.

[0082] S240. Determine the load mapping data based on the load variation curves corresponding to at least two hardware structural parameters.

[0083] In one optional embodiment, determining load mapping data based on load variation curves corresponding to at least two hardware structural parameters includes: using the maximum load force corresponding to the at least two load variation curves as the simulation load; and determining load mapping data based on the at least two hardware structural parameters and the simulation loads corresponding to each hardware structural parameter.

[0084] Specifically, the maximum load force can be used to characterize the load force when a bolted connection structure model deforms or fractures.

[0085] In one optional embodiment, the load mapping data includes a list of discrete load mappings between at least two hardware structural parameters and simulated loads. Taking Table 1 above as an example, the load parameter values ​​of the simulated loads corresponding to at least two hardware structural parameters obtained using finite element simulation technology are added to the data columns in Table 1 to obtain the list of discrete load mappings.

[0086] In another optional embodiment, the load mapping data includes at least one variable load curve corresponding to each target variable parameter. Specifically, the variable load curve is used to characterize the continuous load mapping relationship between the target variable parameters in the hardware structure parameters and the simulated load.

[0087] In an optional embodiment, the variable structural parameters characterize the variable parameters in the hardware structural parameters that are related to the hardware strength of the bolt structure. Correspondingly, the target variable parameters are the thread length, the through hole plate thickness, or the part fracture parameter. The thread length is the thread length and / or the thread plate thickness. All hardware structural parameters in the variable structural parameter set have at least one identical structural parameter other than the target variable parameter.

[0088] Specifically, when the variable structural parameters include thread length and threaded plate thickness, the threaded length is the sum of the thread length and the threaded plate thickness; when the variable structural parameters only include thread length or threaded plate thickness, the threaded length is the thread length or threaded plate thickness.

[0089] Taking Table 1 as an example, when the target variable parameter is the thickness of the through hole plate, the hardware structural parameters corresponding to bolt structural component 1 and bolt structural component 2 belong to the same set of variable structural parameters, while the hardware structural parameters corresponding to bolt structural component k belong to another set of variable structural parameters.

[0090] In another alternative embodiment, the variable structural parameters characterize the variable parameters in the hardware structural parameters that are related to the hardware stability of the bolt structure. Accordingly, the target variable parameters are the number of nuts, the number of through holes, or the number of threaded holes.

[0091] In this embodiment, the load mapping data is determined based on at least two hardware structural parameters and the simulation loads corresponding to each hardware structural parameter. This includes: for each target variable parameter in the hardware structural parameters, classifying the hardware structural parameters corresponding to each preset bolt structural component according to the target variable parameter to obtain at least one set of variable structural parameters; for each set of variable structural parameters, if the set of variable structural parameters contains at least three hardware structural parameters, fitting the simulation loads corresponding to each hardware structural parameter in the set of variable structural parameters according to the values ​​of the at least three variable parameters corresponding to the target variable parameter to obtain a variable load curve.

[0092] For example, the fitting algorithms used include, but are not limited to, polynomial fitting algorithms, least squares curve fitting algorithms, smooth fitting algorithms, and gradient descent-based fitting algorithms, etc. The fitting algorithm used here is not limited, and can be customized according to actual needs.

[0093] Figure 7 This is a schematic diagram of a variable loading curve provided in one embodiment of the present invention. Specifically, Figure 7 The horizontal axis represents the thickness of the bolt plate, and the vertical axis represents the maximum load force. Figure 7 A polynomial fitting algorithm was used to fit the maximum load force based on the five variable parameter values ​​corresponding to the thickness of the bolt plate, thus obtaining the variable load curve.

[0094] The advantage of this setup is that, due to the complexity of finite element simulation (FEM), repeated adjustments to simulation parameters are required to ensure accuracy and convergence, resulting in a large computational load. Performing FEM simulations on all preset bolt structures separately would reduce the efficiency of load mapping data construction. This embodiment, by constructing variable load curves to characterize the continuous load mapping relationship, can build accurate and complete load mapping data based on the FEM simulation results of some preset bolt structures, thereby significantly improving the efficiency of load mapping data construction and ultimately improving the efficiency of bolt structure selection.

[0095] S250. Based on the actual load and load mapping data borne by the assembled parts, determine the target bolt structure that matches the selected bolt.

[0096] S250 in this embodiment is the same as in the above embodiment. Figure 1 The S130 shown is the same or similar, and will not be described again in this embodiment.

[0097] The technical solution of this embodiment uses finite element simulation software to construct at least two bolt connection structure models based on bolt parameters and various hardware structure parameters. For each bolt connection structure model, a load is applied to the bolt connection structure model to obtain the load change curve of the load force with the application time. Based on the load change curves corresponding to the at least two hardware structure parameters, the load mapping data is determined, which solves the problem of load mapping data construction and ensures the accuracy and completeness of the load mapping data, thereby further ensuring the success rate of bolt structure component selection.

[0098] The following are embodiments of the bolt structural component selection device provided in this invention. This device and the bolt structural component selection method in the above embodiments belong to the same inventive concept. For details not described in detail in the embodiments of the bolt structural component selection device, please refer to the content of the bolt structural component selection method in the above embodiments.

[0099] Figure 8 This is a schematic diagram of a bolt selection device according to an embodiment of the present invention. Figure 8 As shown, the device includes: a hardware structural parameter acquisition module 310, a load mapping data determination module 320, and a target bolt structural component determination module 330.

[0100] The hardware structure parameter acquisition module 310 is used to acquire the bolt parameters of the selected bolt and the hardware structure parameters corresponding to at least two preset bolt structure components.

[0101] The load mapping data determination module 320 is used to determine the load mapping data by performing finite element simulation based on bolt parameters and various hardware structure parameters.

[0102] The target bolt structure determination module 330 is used to determine the target bolt structure that matches the selected bolt based on the actual load and load mapping data borne by the assembled parts.

[0103] Among them, the load mapping data characterizes the mapping relationship between the hardware structural parameters under the bolt parameters and the simulated load of the bolt connection structure. The bolt connection structure is a connection structure composed of selected bolts and preset bolt structural components.

[0104] The technical solution of this embodiment obtains the bolt parameters of the selected bolt and the hardware structural parameters corresponding to at least two preset bolt structural components. Finite element simulation is performed based on the bolt parameters and each hardware structural parameter to determine load mapping data. Based on the actual load borne by the assembled parts and the load mapping data, a target bolt structural component matching the selected bolt is determined. The load mapping data characterizes the mapping relationship between each hardware structural parameter under the bolt parameters and the simulated load of the bolt connection structure. The bolt connection structure is a connection structure composed of the selected bolt and preset bolt structural components. This solves the problem of a single standard for bolt structural component selection, ensuring that the bolt connection structure assembled based on the bolt and the selected bolt structural component meets the load performance requirements, thereby improving the stability and safety of the bolt connection structure.

[0105] In one alternative embodiment, each preset bolt structure includes at least one bolt structure combination, which represents the combination of at least one structure among a nut, an assembly part with a through hole, and an assembly part with a threaded hole.

[0106] In one optional embodiment, the hardware structural parameters include basic structural parameters and variable structural parameters. The variable structural parameters include at least one of the following: thread length and nut material corresponding to the nut, through hole plate thickness corresponding to the assembly part with through hole, part material and part fracture parameters, screw plate thickness corresponding to the assembly part with threaded hole, part material and part fracture parameters.

[0107] In an optional embodiment, the load mapping data determination module 320 includes:

[0108] Bolted connection structure model building unit, used to construct at least two bolted connection structure models using finite element simulation software based on bolt parameters and various hardware structure parameters;

[0109] The load variation curve determination unit is used to apply load displacement to each bolted connection structure model to obtain the load variation curve of the load force as a function of the load displacement.

[0110] The load mapping data determination unit is used to determine load mapping data based on the load change curves corresponding to at least two hardware structural parameters.

[0111] In one optional embodiment, the load mapping data determination module includes:

[0112] The simulation load acquisition sub-unit is used to take the maximum load force corresponding to at least two load change curves as the simulation load.

[0113] The load mapping data determination sub-unit is used to determine the load mapping data based on at least two hardware structural parameters and the simulation loads corresponding to each hardware structural parameter.

[0114] In an optional embodiment, the load mapping data includes variable load curves corresponding to at least one target variable parameter. Accordingly, the load mapping data determines sub-units, specifically for:

[0115] For each target variable parameter in the hardware structure parameters, the hardware structure parameters corresponding to each preset bolt structure are classified according to the target variable parameters to obtain at least one set of variable structure parameters.

[0116] For each set of variable structural parameters, if the set of variable structural parameters contains at least three hardware structural parameters, then based on the values ​​of at least three variable parameters corresponding to the target variable parameter, the simulation load corresponding to each hardware structural parameter in the set of variable structural parameters is fitted to obtain the variable load curve;

[0117] The target variable parameter is the thread length, through hole plate thickness, or part fracture parameter. The thread length is the thread length and / or thread plate thickness. All hardware structural parameters in the variable structural parameter set are identical except for the target variable parameter.

[0118] In one alternative embodiment, the bolt parameters include basic bolt parameters and variable bolt parameters, the variable bolt parameters including bolt type and / or bolt preload.

[0119] The bolt structural component selection device provided in this embodiment of the invention can execute the bolt structural component selection method provided in any embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0120] Figure 9 This is a schematic diagram of an electronic device provided according to one embodiment of the present invention. The electronic device 10 is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0121] like Figure 9As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor 11. The processor 11 can perform various appropriate actions and processes based on the computer programs stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 can also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0122] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0123] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, central processing unit (CPU), graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the bolt structure selection method provided in the above embodiments.

[0124] In some embodiments, the bolt selection method provided in the above embodiments can be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the bolt selection method described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the bolt selection method by any other suitable means (e.g., by means of firmware).

[0125] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0126] The computer program for implementing the bolted structural member selection method of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to the processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program can be executed entirely on the machine, partially on the machine, as a standalone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0127] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0128] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0129] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or computing systems that include middleware components (e.g., application servers), or computing systems that include frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0130] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0131] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0132] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method of selecting a bolt structure member, characterized by, The method comprises: obtaining bolt parameters of a selected bolt and hardware structure parameters corresponding to at least two preset bolt structure members respectively; performing finite element simulation according to the bolt parameters and the hardware structure parameters to determine load mapping data; determining a target bolt structure member matched with the selected bolt according to actual load borne by an assembly part and the load mapping data; wherein the load mapping data represents a mapping relationship between the hardware structure parameters under the bolt parameters and simulation load of a bolt connection structure, and the bolt connection structure is a connection structure composed of the selected bolt and the preset bolt structure member.

2. The method of claim 1, wherein, Each of the preset bolt structure members comprises at least one bolt structure combination, and the bolt structure combination represents a combination form of at least one of a nut, an assembly part with a through hole and an assembly part with a threaded hole.

3. The method of claim 2, wherein, The hardware structure parameters comprise basic structure parameters and variable structure parameters, and the variable structure parameters comprise at least one variable parameter of a threaded length and nut material corresponding to a nut, a through hole plate thickness, part material and part fracture parameter corresponding to the assembly part with the through hole, and a threaded hole plate thickness, part material and part fracture parameter corresponding to the assembly part with the threaded hole.

4. The method of claim 3, wherein, The finite element simulation according to the bolt parameters and the hardware structure parameters to determine the load mapping data comprises: using a finite element simulation software to construct at least two bolt connection structure models according to the bolt parameters and the hardware structure parameters; for each bolt connection structure model, applying a load displacement to the bolt connection structure model to obtain a load change curve of a load force with respect to a load displacement; determining the load mapping data according to the load change curves corresponding to the at least two hardware structure parameters respectively.

5. The method of claim 4, wherein, The determination of the load mapping data according to the load change curves corresponding to the at least two hardware structure parameters respectively comprises: taking maximum load forces corresponding to the at least two load change curves respectively as simulation loads; determining the load mapping data according to the at least two hardware structure parameters and the simulation loads corresponding to the hardware structure parameters respectively.

6. The method of claim 5, wherein, The load mapping data comprises at least one variable load curve corresponding to each target variable parameter, and correspondingly, the determination of the load mapping data according to the at least two hardware structure parameters and the simulation loads corresponding to the hardware structure parameters respectively comprises: for each target variable parameter in the hardware structure parameters, classifying the hardware structure parameters corresponding to each of the preset bolt structure members according to the target variable parameter to obtain at least one variable structure parameter set; for each variable structure parameter set, if the variable structure parameter set comprises at least three hardware structure parameters, fitting the simulation loads corresponding to the hardware structure parameters in the variable structure parameter set according to at least three variable parameter values corresponding to the target variable parameter to obtain a variable load curve; The target variable parameter is a screwing length, a through-hole plate thickness, or a part fracture parameter, the screwing length is a thread length and / or a screwing plate thickness, and each hardware structure parameter in the set of variable structure parameters is identical except at least one structure parameter other than the target variable parameter.

7. The method according to any one of claims 1 to 6, characterized in that, The bolt parameter includes a basic bolt parameter and a variable bolt parameter, and the variable bolt parameter includes a bolt model and / or a bolt pre-tightening force.

8. A bolt structure member selection device characterized by comprising: The method comprises the following steps: A hardware structure parameter acquisition module is configured to acquire a bolt parameter of a selected bolt and hardware structure parameters corresponding to at least two preset bolt structure pieces respectively; A load mapping data determination module is configured to determine load mapping data by performing finite element simulation according to the bolt parameter and each hardware structure parameter; A target bolt structure piece determination module is configured to determine a target bolt structure piece matched with the selected bolt according to an actual load borne by an assembled part and the load mapping data. The load mapping data represent a mapping relationship between each hardware structure parameter and a simulation load of a bolt connection structure under the bolt parameter, and the bolt connection structure is a connection structure formed by the selected bolt and the preset bolt structure piece.

9. An electronic device, comprising: The electronic device comprises: at least one processor; and a memory connected with the at least one processor in communication; wherein the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the bolt structure piece selection method in any one of claims 1-7.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions for enabling the processor to execute the bolt structure piece selection method in any one of claims 1-7 when executed by the processor.

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