HFSS-based auxetic structure wave-absorbing material simulation method and system

Abstract

The invention discloses an HFSS-based auxetic structure wave-absorbing material simulation method and system, and relates to the technical field of electromagnetic wave absorbing materials, and the method comprises the steps: obtaining the effective dielectric constant and magnetic conductivity of a to-be-simulated wave-absorbing material; based on the effective dielectric constant, the magnetic conductivity and preset auxetic structure parameters, establishing a multilayer auxetic structure simulation model of the to-be-simulated wave-absorbing material on an HFSS simulation platform; constructing an air box model for simulating an external environment on the HFSS simulation platform; and based on preset simulation parameters, solving, optimizing and simulating the multilayer auxetic structure simulation model in the air box model through an HFSS simulation platform to obtain a reflection loss value of the to-be-simulated wave-absorbing material. The technical problem that an existing wave-absorbing material is difficult to consider the wave-absorbing performance and the mechanical performance at the same time is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic wave absorption materials, and particularly to a simulation method and system for auxetic structure absorbing materials based on HFSS. Background Art

[0002] In recent years, with the vigorous development of information technology, electromagnetic devices have been used more and more widely. From 5G base stations to mobile phone chips, they have become an inseparable part of social life. However, while these electromagnetic devices bring convenience to people's lives, they also emit a large amount of electromagnetic waves to the outside world. These increasing electromagnetic radiations have not been effectively controlled, ultimately leading to the generation of electromagnetic pollution. Electromagnetic pollution not only interferes with the effective propagation of electromagnetic waves, affects the normal operation of electromagnetic devices, but also causes damage to human health. Therefore, it is very important to prevent and control electromagnetic pollution problems. To effectively prevent and control electromagnetic pollution and a series of problems brought by it, the research and application of electromagnetic wave protection materials are imminent.

[0003] Most of the current electromagnetic wave protection materials are composite materials, which mainly enhance the wave absorption properties by compounding materials with different electromagnetic properties and regulating the microtopography. However, the mechanical properties of composite materials synthesized from different materials vary greatly. Even if they have strong wave absorption ability, it is impossible to ensure that the materials can meet the actual application requirements. Summary of the Invention

[0004] To solve the above technical problems existing in the prior art, an embodiment of the present invention provides a simulation method and system for auxetic structure absorbing materials based on HFSS. The technical solutions are as follows:

[0005] On the one hand, a simulation method for auxetic structure absorbing materials based on HFSS is provided. The method includes: obtaining the effective permittivity and permeability of the absorbing material to be simulated; based on the effective permittivity, the permeability and the preset auxetic structure parameters, establishing a multi-layer auxetic structure simulation model of the absorbing material to be simulated on the HFSS simulation platform; constructing an air box model for simulating the external environment on the HFSS simulation platform; based on the preset simulation parameters, solving, optimizing and simulating the multi-layer auxetic structure simulation model in the air box model through the HFSS simulation platform to obtain the reflection loss value of the absorbing material to be simulated.

[0006] Optionally, the multi-layer auxetic structure simulation model includes a three-layer auxetic structure simulation model.

[0007] Optionally, the air box model is a cuboid model, and the height of the air box model is greater than the height of the multi-layer auxetic structure simulation model.

[0008] Optionally, the method further includes: setting a master-slave boundary on the surface of the air box model and setting Floquet ports on the surface of the air box model.

[0009] Optionally, the preset simulation parameters include: the parameters of the simulation Analysis function of the HFSS simulation platform and the scanning parameters for the simulation model of the multi-layer auxetic structure.

[0010] On the other hand, there is also provided a simulation system for auxetic structure absorbing materials based on HFSS, including: an acquisition module, a first establishment module, a second establishment module, and a simulation module; wherein, the acquisition module is used to acquire the effective permittivity and permeability of the absorbing material to be simulated; the first establishment module is used to establish a simulation model of the multi-layer auxetic structure of the absorbing material to be simulated on the HFSS simulation platform based on the effective permittivity, the permeability, and the preset auxetic structure parameters; the second establishment module is used to construct an air box model for simulating the external environment on the HFSS simulation platform; the simulation module is used to solve, optimize, and simulate the multi-layer auxetic structure simulation model in the air box model based on the preset simulation parameters through the HFSS simulation platform to obtain the reflection loss value of the absorbing material to be simulated.

[0011] Optionally, the second establishment module is further used to set a master-slave boundary on the surface of the air box model and set Floquet ports on the surface of the air box model.

[0012] Optionally, the preset simulation parameters include: the parameters of the simulation Analysis function of the HFSS simulation platform and the scanning parameters for the simulation model of the multi-layer auxetic structure.

[0013] On the other hand, there is also provided an electronic device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor, and when the processor executes the computer program, the method provided in the embodiments of the present invention is implemented.

[0014] On the other hand, there is also provided a computer-readable storage medium, in which program code is stored, and the program code can be called by a processor to execute the method provided in the embodiments of the present invention.

[0015] The embodiments of the present invention provide a simulation method and system for auxetic structure absorbing materials based on HFSS. Compared with the prior art, it has the following advantages: The auxetic structure absorbing materials proposed by the present invention have both absorbing performance and mechanical properties, solving the problem that the mechanical properties of absorbing materials do not meet the actual application requirements; Each structure in the auxetic structure absorbing materials proposed by the present invention can obtain an absorbing material with low reflection loss, proving the excellent absorbing ability of the auxetic structure absorbing materials; The simulation method provided by the present invention can perform simulation tests on any commonly used composite materials, having good application flexibility, and can also play a guiding role in experiments and reduce experimental costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 is a flowchart of a simulation method for auxetic structure absorbing materials based on HFSS provided by the embodiments of the present invention;

[0018] Figure 2 is a schematic diagram of the dielectric constant curve and magnetic permeability curve of the absorbing materials in Embodiments 1 to 4 of the present invention in the 2 - 18 GHz range;

[0019] Figure 3 is a schematic diagram of the model of the auxetic structure in the present invention;

[0020] Figure 4 is a schematic diagram of the master - slave boundary and Floquet port settings of an air box provided by the embodiments of the present invention;

[0021] Figure 5 is the reflection loss result of a rhombus - shaped structure model within the range of 1 - 5 mm under three - layer conditions provided by the embodiments of the present invention;

[0022] Figure 6 is the reflection loss result of a concave quadrilateral - shaped structure model within the range of 1 - 5 mm under three - layer conditions provided by the embodiments of the present invention;

[0023] Figure 7 is the reflection loss result of a concave hexagon - shaped structure model within the range of 1 - 5 mm under three - layer conditions provided by the embodiments of the present invention;

[0024] Figure 8 is the reflection loss result of a swastika - shaped structure model within the range of 1 - 5 mm under three - layer conditions provided by the embodiments of the present invention;

[0025] Figure 9 It is a schematic diagram of a simulation system for auxetic structure absorbing material based on HFSS provided by an embodiment of the present invention. Specific embodiments

[0026] The technical solutions in the present invention will be described below with reference to the accompanying drawings.

[0027] In the embodiments of the present invention, words such as "exemplarily" and "for example" are used to represent examples, illustrations or explanations. Any embodiment or design solution described as an "example" in the present invention should not be construed as being more preferred or having more advantages than other embodiments or design solutions. Rather, the use of the word "example" is intended to present concepts in a specific manner. In addition, in the embodiments of the present invention, the meaning expressed by "and / or" can be both, or either one of the two can be selected.

[0028] To make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will be described in detail with reference to the accompanying drawings and specific embodiments.

[0029] Figure 1 It is a flowchart of a simulation method for auxetic structure absorbing material based on HFSS provided by an embodiment of the present invention. As Figure 1 shown, the method specifically includes the following steps:

[0030] Step S102, obtaining the effective dielectric constant and magnetic permeability of the absorbing material to be simulated.

[0031] For example, an absorbing material with a real part of the effective dielectric constant of 50, an imaginary part of 15, and a magnetic permeability approximately equal to 1 at 2 GHz is substituted for simulation.

[0032] Step S104, based on the effective dielectric constant, magnetic permeability and preset auxetic structure parameters, establishing a multi-layer auxetic structure simulation model of the absorbing material to be simulated on the HFSS simulation platform.

[0033] Specifically, an auxetic structure is selected as a template, preset auxetic structure parameters are designed, and then a multi-layer auxetic structure simulation model is established in the HFSS simulation platform.

[0034] Optionally, the multi-layer auxetic structure simulation model includes a three-layer auxetic structure simulation model.

[0035] In an optional implementation manner provided by the embodiments of the present invention, the actual preparation method of the auxetic structure is the direct ink writing technology, and a 23G needle (inner diameter of 0.6 mm) is used for preparation. Therefore, the wall thickness of the three-layer auxetic structure simulation model is 0.6 mm, and the single-layer height is 0.6 mm.

[0036] Step S106: constructing an air box model for simulating an external environment on the HFSS simulation platform.

[0037] Optionally, the air box model is a rectangular parallelepiped model, and a height of the air box model is greater than a height of the multi-layer traction structure simulation model.

[0038] Step S108, based on preset simulation parameters, the multi-layer auxetic structure simulation model is solved, optimized and simulated in the air box model through the HFSS simulation platform to obtain the reflection loss value of the absorbing material to be simulated.

[0039] Optionally, step S106 further includes: setting a master-slave boundary on the surface of the air box model, and setting a Floquet port on the surface of the air box model. Specifically, the master-slave boundary is set on the front, back, left, and right surfaces of the air box to simulate an infinite periodic unit; the Floquet port is set on the upper surface of the air box and specifies the direction of the transverse electromagnetic wave and the transverse magnetic field wave on the plane.

[0040] Specifically, the preset simulation parameters include: parameters of the simulation Analysis function of the HFSS simulation platform and scanning parameters of the multi-layer traction structure simulation model.

[0041] For example, in Solution Setup under the Analysis function, the Solution Frequency is set to Broadband, and the Low Frequency and High Frequency are set to 2GHz and 18GHz respectively; in the sweep interface, the simulation frequency band needs to be set to 2-18GHz, and the number of frequency points is set to 65; the scanning parameters are set to aperture, the scanning range is 1-5mm, and the interval is 0.5mm.

[0042] In some optional implementations provided by the embodiments of the present invention, the multilayer auxetic structure simulation model includes: a diamond structure, a concave quadrilateral structure, a concave hexagonal structure and a swastika structure. The following specifically describes the above four structures as examples.

[0043] Embodiment 1

[0044] (1) Create a new material in HFSS and import the dielectric constant and magnetic permeability of the absorbing material into the material library.

[0045] (2) Select the diamond structure as the template and establish a three-layer diamond structure model in HFSS.

[0046] (3) Based on the model size, add a rectangular air box outside the model to simulate the external environment.

[0047] (4)Set master-slave boundaries on the front, back, left, and right surfaces of the air box to simulate an infinite periodic cell, set a Floquet port on the upper surface of the air box, and specify the directions of the transverse electromagnetic wave and transverse magnetic wave on the plane.

[0048] (5)Determine the solution by setting Solution Setup under the Analysis function, where SolutionFrequency is set to Broadband, Low Frequency and High Frequency are set to 2 GHz and 18 GHz respectively, and the simulation frequency band is set to 2 - 18 GHz with 65 frequency points in the sweep interface.

[0049] (6)Perform parameter scanning through the Parametric function in the Optimetrics module, scanning the aperture from 1 to 5 mm at intervals of 0.5 mm and substituting it into the simulation.

[0050] (7)After determining the feasibility through Validate, solve, optimize, and simulate the auxetic metamaterial absorber model and output the simulation results.

[0051] Example 2

[0052] (1)Create a new material in HFSS and import the permittivity and permeability of the absorber material into the material library.

[0053] (2)Select the concave quadrilateral structure as the template and establish a three-layer concave quadrilateral structure model in HFSS.

[0054] (3)Based on the model size, add a cuboid air box outside the model to simulate the external environment.

[0055] (4)Set master-slave boundaries on the front, back, left, and right surfaces of the air box to simulate an infinite periodic cell, set a Floquet port on the upper surface of the air box, and specify the directions of the transverse electromagnetic wave and transverse magnetic wave on the plane.

[0056] (5)Determine the solution by setting Solution Setup under the Analysis function, where SolutionFrequency is set to Broadband, Low Frequency and High Frequency are set to 2 GHz and 18 GHz respectively, and the simulation frequency band is set to 2 - 18 GHz with 65 frequency points in the sweep interface.

[0057] (6) Perform parameter scanning using the Parametric function in the Optimetrics module. Scan the aperture from 1 to 5 mm at intervals of 0.5 mm and substitute it into the simulation.

[0058] (7) After confirming the feasibility through Validate, the traction structure absorbing material model is solved, optimized, and simulated, and the simulation results are output.

[0059] Embodiment 3

[0060] (1) Create a new material in HFSS and import the dielectric constant and magnetic permeability of the absorbing material into the material library.

[0061] (2) Select the concave hexagonal structure as a template and establish a three-layer concave hexagonal structure model in HFSS.

[0062] (3) Based on the model size, add a rectangular air box outside the model to simulate the external environment.

[0063] (4) Master-slave boundaries are set on the front, back, left, and right surfaces of the air box to simulate infinite periodic units. Floquet ports are set on the top surface of the air box, and the directions of transverse electromagnetic waves and transverse magnetic field waves on the plane are specified.

[0064] (5) Determine the solution by setting Solution Setup under the Analysis function, where Solution Frequency is set to Broadband, Low Frequency and High Frequency are set to 2 GHz and 18 GHz respectively, and set the simulation frequency band to 2-18 GHz and the number of frequency points to 65 in the sweep interface.

[0065] (6) Perform parameter scanning using the Parametric function in the Optimetrics module. Scan the aperture from 1 to 5 mm at intervals of 0.5 mm and substitute it into the simulation.

[0066] (7) After the feasibility is confirmed by Validate, the traction structure absorbing material model is solved, optimized, and simulated, and the simulation results are output.

[0067] Embodiment 4

[0068] (1) Create a new material in HFSS and import the dielectric constant and magnetic permeability of the absorbing material into the material library.

[0069] (2) Select the swastika structure as a template and establish a three-layer swastika structure model in HFSS.

[0070] (3) Based on the model size, add a rectangular air box outside the model to simulate the external environment.

[0071] (4) Master-slave boundaries are set on the front, back, left, and right surfaces of the air box to simulate infinite periodic units. Floquet ports are set on the top surface of the air box, and the directions of transverse electromagnetic waves and transverse magnetic field waves on the plane are specified.

[0072] (5) Determine the solution by setting Solution Setup under the Analysis function, where Solution Frequency is set to Broadband, Low Frequency and High Frequency are set to 2 GHz and 18 GHz respectively, and set the simulation frequency band to 2-18 GHz and the number of frequency points to 65 in the sweep interface.

[0073] (6) Perform parameter scanning using the Parametric function in the Optimetrics module. Scan the aperture from 1 to 5 mm at intervals of 0.5 mm and substitute it into the simulation.

[0074] (7) After the feasibility is confirmed by Validate, the traction structure absorbing material model is solved, optimized, and simulated, and the simulation results are output.

[0075] It should be noted that in the embodiments of the present invention, the Solution Type in the HFSS simulation platform is set to HFSS, and Options is set to Network Analysis and Modal; the height of the air box must be greater than the total height of the traction structure to achieve normal use of the Floquet port; the aperture of the traction structure is initially set to 1 mm, and in the subsequent parameter scan, the aperture in the range of 1-5 mm will be traversed and its reflection loss will be tested.

[0076] Figure 2 Schematic diagram of the dielectric constant curve and magnetic permeability curve of the absorbing material in the 2-18 GHz range according to the first to fourth embodiments of the present invention. Among them, Figures (a) to (d) correspond to the result curves of the diamond structure, the concave quadrilateral structure, the concave hexagonal structure and the swastika structure respectively. Figure 2 It can be seen that the real part of the dielectric constant of the material is 50 at 2 GHz, and the imaginary part is 15 at 2 GHz, and gradually decreases with the increase of frequency. The magnetic permeability curve of the material is relatively stable, basically around 1, and the impact on reflection loss can be ignored.

[0077] Figure 3It is a schematic diagram of the model of the expansion structure in the present invention, showing the modeling of a three-layer expansion structure. Among them, Figures (a) to (d) correspond to schematic diagrams of periodic units of a diamond structure, a concave quadrilateral structure, a concave hexagonal structure, and a swastika structure, respectively. Among them, the inner angle of the diamond structure is set to 90°; the top angle of the concave quadrilateral structure is 60°, and the other three angles are 30°, 30°, and 240° respectively; the inner angles of the concave hexagon are 60° and 240° respectively; the inner angles of the swastika structure are 90° and 270° respectively. Each layer is cross-stacked to avoid magnetic permeability, and the offset between each layer is the length of the periodic unit divided by the number of layers.

[0078] Figure 4 1 is a schematic diagram of the master-slave boundary and Floquet port settings of an air box provided by an embodiment of the present invention. The material of the air box is set to air. The master-slave boundary simulates a periodic tensile structure array, and the Floquet port sets a transverse electric field (TE) wave and a transverse magnetic field (TM) wave along the z-axis direction to provide excitation.

[0079] Figure 5 is the reflection loss result within the range of 1-5 mm under three-layer conditions for a diamond structure model provided by an embodiment of the present invention, Figure 6 is the reflection loss result within the range of 1-5 mm under three-layer conditions of a concave quadrilateral structure model provided by an embodiment of the present invention, Figure 7 is the reflection loss result within the range of 1-5 mm under three-layer conditions for a concave hexagonal structure model provided by an embodiment of the present invention, Figure 8 It is the reflection loss result of a swastika structure model provided by an embodiment of the present invention under three-layer conditions within the range of 1-5 mm. Among them, the reflection loss of the rhombus structure with an aperture of 2.0 mm is -31.70 dB at 14.00 GHz; the reflection loss of the concave quadrilateral structure with an aperture of 4.0 mm is -40.08 dB at 14.75 GHz; the reflection loss of the concave hexagonal structure with an aperture of 5.0 mm is -52.16 dB at 15.00 GHz; the reflection loss of the swastika structure with an aperture of 5.0 mm is -36.40 dB at 13.00 GHz; and under other aperture conditions, there are also tensile expansion structure absorbing materials with very small reflection losses.

[0080] Depend on Figures 5 - 8 It can be seen that the absorbing materials constructed with different tensile structures have different absorbing frequency bands, but they all have strong absorbing ability. At the same time, changing the aperture can significantly change the electromagnetic wave absorption capacity and absorbing frequency of the tensile structure absorbing material.

[0081] Based on the HFSS simulation software, the present invention conducts simulation design and testing on the auxetic structure absorbing material, achieving an electromagnetic wave absorption rate exceeding 99.9%. Moreover, due to the use of the auxetic structure, the absorbing material has strong mechanical properties and has potential application prospects in practical applications.

[0082] As can be seen from the above description, the embodiment of the present invention provides a simulation method for an auxetic structure absorbing material based on HFSS. Compared with the prior art, it has the following technical effects:

[0083] 1. The auxetic structure absorbing material proposed by the present invention has both absorbing performance and mechanical properties, solving the problem that the mechanical properties of the absorbing material do not meet the actual application requirements.

[0084] 2. For each structure in the auxetic structure absorbing material proposed by the present invention, an absorbing material with a reflection loss less than -30 dB can be obtained, and the minimum can reach -52.16 dB, proving the excellent absorbing ability of the auxetic structure absorbing material.

[0085] 3. The simulation method for the auxetic structure absorbing material based on HFSS provided by the present invention can conduct simulation tests on any commonly used composite material, having good application flexibility, and can also play a guiding role in experiments and reduce experimental costs.

[0086] Embodiment Five

[0087] Figure 9 is a schematic diagram of a simulation system for an auxetic structure absorbing material based on HFSS according to an embodiment of the present invention. As Figure 9 shown, the system includes: an acquisition module 10, a first establishment module 20, a second establishment module 30, and a simulation module 40.

[0088] Specifically, the acquisition module 10 is used to acquire the effective dielectric constant and magnetic permeability of the absorbing material to be simulated;

[0089] The first establishment module 20 is used to establish a multi-layer auxetic structure simulation model of the absorbing material to be simulated on the HFSS simulation platform based on the effective dielectric constant, magnetic permeability, and preset auxetic structure parameters;

[0090] The second establishment module 30 is used to construct an air box model for simulating the external environment on the HFSS simulation platform;

[0091] The simulation module 40 is used to solve, optimize, and simulate the multi-layer auxetic structure simulation model in the air box model through the HFSS simulation platform based on the preset simulation parameters to obtain the reflection loss value of the absorbing material to be simulated.

[0092] Specifically, the second establishment module 30 is further configured to set master-slave boundaries on the surface of the air box model and set Floquet ports on the surface of the air box model.

[0093] Optionally, the preset simulation parameters include: the parameters of the simulation Analysis function of the HFSS simulation platform and the scanning parameters for the simulation model of the multi-layer auxetic structure.

[0094] The present invention also provides an electronic device, including: a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the computer program, the method provided in the embodiment of the present invention is implemented.

[0095] The present invention also provides a computer-readable storage medium. Program codes are stored in the computer-readable storage medium, and the program codes can be called by the processor to execute the method provided in the example of the present invention.

[0096] It should be understood that the memory in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. Among them, the non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of random access memory (RAM) are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchlink dynamic random access memory (SLDRAM), and direct rambus random access memory (DR RAM).

[0097] The above embodiments can be implemented in whole or in part by software, hardware (such as circuits), firmware, or any combination thereof. When implemented using software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the processes or functions described in the embodiments of the present invention are generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wired (such as infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that contains a collection of one or more available media. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state drive.

[0098] It should be understood that in various embodiments of the present invention, the sequence numbers of the above processes do not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present invention.

[0099] Those of ordinary skill in the art can realize that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. A professional technician can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present invention.

[0100] Those skilled in the art can clearly understand that for the convenience and conciseness of description, the specific working processes of the devices, apparatuses, and units described above can refer to the corresponding processes in the foregoing method embodiments and will not be described herein again.

[0101] In several embodiments provided by the present invention, it should be understood that the disclosed devices, apparatuses, and methods can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the displayed or discussed couplings or direct couplings or communication connections to each other can be through some interfaces. The indirect couplings or communication connections of the devices or units can be in electrical, mechanical, or other forms.

[0102] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they can be located in one place, or they can be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0103] In addition, in each embodiment of the present invention, the functional units can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit.

[0104] If the above functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in each embodiment of the present invention. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs that can store program codes.

[0105] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A simulation method of auxetic structure absorbing material based on HFSS, characterized in that: The method comprises: Obtain the effective dielectric constant and magnetic permeability of the absorbing material to be simulated; Based on the effective dielectric constant, the magnetic permeability and the preset auxetic structure parameters, a multilayer auxetic structure simulation model of the absorbing material to be simulated is established on the HFSS simulation platform; Constructing an air box model for simulating an external environment on the HFSS simulation platform; Based on preset simulation parameters, the multi-layer auxetic structure simulation model is solved, optimized and simulated in the air box model through the HFSS simulation platform to obtain the reflection loss value of the absorbing material to be simulated.

2. The method according to claim 1, characterized in that: The multi-layer auxetic structure simulation model includes a three-layer auxetic structure simulation model.

3. The method according to claim 1, characterized in that The air box model is a rectangular parallelepiped model, and the height of the air box model is greater than the height of the multi-layer traction structure simulation model.

4. The method according to claim 1, characterized in that The method further includes: setting a master-slave boundary on the surface of the air box model, and setting a Floquet port on the surface of the air box model.

5. The method according to claim 1, characterized in that The preset simulation parameters include: parameters of the simulation Analysis function of the HFSS simulation platform and scanning parameters of the multi-layer traction structure simulation model.

6. A simulation system for auxetic structure absorbing materials based on HFSS, characterized in that: include: an acquisition module, a first establishment module, a second establishment module and a simulation module; wherein, The acquisition module is used to obtain the effective dielectric constant and magnetic permeability of the absorbing material to be simulated; The first establishing module is used to establish a multilayer auxetic structure simulation model of the absorbing material to be simulated on the HFSS simulation platform based on the effective dielectric constant, the magnetic permeability and preset auxetic structure parameters; The second building module is used to build an air box model for simulating an external environment on the HFSS simulation platform; The simulation module is used to solve, optimize and simulate the multi-layer traction structure simulation model in the air box model through the HFSS simulation platform based on preset simulation parameters to obtain the reflection loss value of the absorbing material to be simulated.

7. The system according to claim 6, characterized in that The second establishing module is further used to set a master-slave boundary on the surface of the air box model and to set a Floquet port on the surface of the air box model.

8. The system according to claim 6, characterized in that The preset simulation parameters include: parameters of the simulation Analysis function of the HFSS simulation platform and scanning parameters of the multi-layer traction structure simulation model.

9. 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 implements the method according to any one of claims 1 to 5 when executing the computer program.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores program codes, which can be called by a processor to execute the method according to any one of claims 1 to 5.

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