Analysis Method, Device, Equipment and Medium for Interfacial Debonding Performance of Composite Materials

Abstract

The present invention discloses a method, device, equipment and medium for analyzing the interfacial debonding performance of a composite material. By obtaining the material combined description parameters corresponding to the target composite material; wherein, the material combined description parameters include: unidirectional layer fiber cross-section description parameters, square matrix description parameters and matrix interlayer fracture description parameters; according to the unidirectional layer fiber cross-section description parameters, square matrix description parameters and matrix interlayer fracture description parameters, through a pre-set composite material interlayer tensile strength calculation model, the current composite material interlayer tensile strength corresponding to the target composite material is calculated; through the current composite material interlayer tensile strength, the interfacial debonding analysis performance result corresponding to the target composite material is determined, and the interfacial debonding analysis performance result is fed back to the user. The problems of inaccurate and low-efficiency performance analysis of composite materials considering interfacial debonding are solved, and the accuracy of the interfacial debonding performance analysis of composite materials is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of composite material data processing, and particularly relates to a method, device, equipment and medium for analyzing the interfacial debonding performance of composite materials. Background Art

[0002] A composite material refers to a new material formed by combining two or more heterogeneous, irregular and anisotropic raw materials through a certain process. It retains the main characteristics of the original component materials and obtains new properties that the original component materials do not have through the composite effect. Compared with ordinary single-phase reinforcing materials, its impact strength, fatigue strength and fracture toughness are significantly improved, and it has special thermal expansion properties.

[0003] In the process of implementing the present invention, the inventors found that the prior art has the following defects: At present, the performance calculation methods of composite materials include various methods such as theoretical analysis and finite element analysis. Among them, finite element analysis simulates a real physical system through a mathematical approximation method and can analyze complex shapes and structures. However, it is not accurate to consider interfacial debonding for performance analysis of composite materials, and the efficiency is also relatively low. Summary of the Invention

[0004] The present invention provides a method, device, equipment and medium for analyzing the interfacial debonding performance of composite materials to improve the accuracy of analyzing the interfacial debonding performance of composite materials.

[0005] According to one aspect of the present invention, there is provided a method for analyzing the interfacial debonding performance of composite materials, which includes:

[0006] Obtain the material combined description parameters corresponding to the target composite material;

[0007] Wherein, the material combined description parameters include: unidirectional layer fiber cross-section description parameters, square matrix description parameters and matrix interlayer fracture description parameters;

[0008] According to the unidirectional layer fiber cross-section description parameters, square matrix description parameters and matrix interlayer fracture description parameters, calculate the current composite material interlayer tensile strength corresponding to the target composite material through a preset composite material interlayer tensile strength calculation model;

[0009] Determine the interfacial debonding analysis performance result corresponding to the target composite material through the current composite material interlayer tensile strength, and feedback the interfacial debonding analysis performance result to the user.

[0010] According to another aspect of the present invention, there is provided a device for analyzing the interfacial debonding performance of composite materials, which includes:

[0011] A material combined description parameter acquisition module, configured to acquire the material combined description parameters corresponding to the target composite material;

[0012] Among them, the material combined description parameters include: unidirectional layer fiber cross-section description parameters, square matrix description parameters, and matrix interlayer fracture description parameters;

[0013] A current composite material interlayer tensile strength determination module, configured to calculate the current composite material interlayer tensile strength corresponding to the target composite material according to the unidirectional layer fiber cross-section description parameters, square matrix description parameters, and matrix interlayer fracture description parameters through a pre-set composite material interlayer tensile strength calculation model;

[0014] An interface debonding analysis performance result determination module, configured to determine the interface debonding analysis performance result corresponding to the target composite material through the current composite material interlayer tensile strength, and feedback the interface debonding analysis performance result to the user.

[0015] According to another aspect of the present invention, there is provided an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. Among them, when the processor executes the computer program, the interface debonding performance analysis method of the composite material according to any embodiment of the present invention is implemented.

[0016] According to another aspect of the present invention, there is provided a computer-readable storage medium storing computer instructions for causing a processor to implement the interface debonding performance analysis method of the composite material according to any embodiment of the present invention when executed.

[0017] The technical solution of the embodiment of the present invention solves the problems of inaccurate and low-efficiency performance analysis of composite materials considering interface debonding by acquiring the material combined description parameters corresponding to the target composite material; among them, the material combined description parameters include: unidirectional layer fiber cross-section description parameters, square matrix description parameters, and matrix interlayer fracture description parameters; calculating the current composite material interlayer tensile strength corresponding to the target composite material according to the unidirectional layer fiber cross-section description parameters, square matrix description parameters, and matrix interlayer fracture description parameters through a pre-set composite material interlayer tensile strength calculation model; determining the interface debonding analysis performance result corresponding to the target composite material through the current composite material interlayer tensile strength, and feedbacking the interface debonding analysis performance result to the user. The accuracy of the interface debonding performance analysis of composite materials is improved.

[0018] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present invention, nor is it used to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0020] Figure 1a is a flowchart of a method for analyzing the interfacial debonding performance of a composite material according to Embodiment 1 of the present invention;

[0021] Figure 1b is a schematic structural diagram of a unidirectional layer fiber cross-section, a square matrix, and matrix interlayer fracture corresponding to the target composite material in the method according to Embodiment 1 of the present invention;

[0022] Figure 1c is a schematic structural diagram of the interfacial load distribution between a unidirectional layer fiber cross-section and a square matrix corresponding to the target composite material in the method according to Embodiment 1 of the present invention;

[0023] Figure 1d is a schematic structural diagram of the enlarged interfacial load distribution between a unidirectional layer fiber cross-section and a square matrix corresponding to the target composite material in the method according to Embodiment 1 of the present invention;

[0024] Figure 1e is a schematic structural diagram of the force analysis at the interface between a unidirectional layer fiber cross-section and a square matrix corresponding to the target composite material in the method according to Embodiment 1 of the present invention;

[0025] Figure 2 is a schematic structural diagram of a device for analyzing the interfacial debonding performance of a composite material according to Embodiment 2 of the present invention;

[0026] Figure 3 is a schematic structural diagram of an electronic device according to Embodiment 3 of the present invention. Detailed implementation manners

[0027] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0028] It should be noted that the terms "target", "current", etc. in the specification, claims and the above-mentioned drawings of the present invention are used to distinguish similar objects, and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device comprising a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0029] Embodiment 1

[0030] Figure 1a FIG. 1 is a flowchart of a method for analyzing the interface debonding performance of a composite material provided in Embodiment 1 of the present invention. This embodiment is applicable to the case of analyzing the interface debonding performance of a composite material. This method can be executed by a device for analyzing the interface debonding performance of a composite material, and the device for analyzing the interface debonding performance of a composite material can be implemented in the form of hardware and / or software.

[0031] Correspondingly, as Figure 1a shown, the method includes:

[0032] S110. Obtain the combined material description parameters corresponding to the target composite material.

[0033] Among them, the combined material description parameters can be parameters that describe various aspects of the target composite material. Specifically, the combined material description parameters include: unidirectional layer fiber cross-section description parameters, square matrix description parameters, and matrix interlayer fracture description parameters.

[0034] Among them, the unidirectional layer fiber cross-section description parameters can be parameters that describe the fiber cross-section of the unidirectional layer corresponding to the target composite material.

[0035] Among them, the square matrix description parameters can be parameters that describe the square matrix wrapping the target composite material. The matrix interlayer fracture description parameters can be parameters that describe the matrix interlayer fracture existing between the unidirectional layer fiber cross-section and the square matrix.

[0036] Exemplarily, Figure 1b FIG. 2 is a schematic structural diagram of the unidirectional layer fiber cross-section, square matrix and matrix interlayer fracture corresponding to the target composite material. Specifically, the diameter of the unidirectional layer fiber cross-section is d, the side length of the square matrix is a, and the shaded part is the matrix interlayer fracture.

[0037] S120. According to the unidirectional layer fiber cross-section description parameters, square matrix description parameters, and matrix interlayer fracture description parameters, calculate the current composite interlayer tensile strength corresponding to the target composite material through a pre-set composite interlayer tensile strength calculation model.

[0038] Among them, the unidirectional layer fiber cross-section description parameters can be the description parameters of the unidirectional layer fiber cross-section corresponding to the target composite material. The square matrix description parameters can be the description parameters of the square matrix. Generally speaking, the square matrix wraps the target composite material. The matrix interlayer fracture description parameters can be the description parameters of the interlayer fracture between the unidirectional layer fiber cross-section and the square matrix. The current composite interlayer tensile strength can be the magnitude of the tensile strength of the composite interlayer corresponding to the target composite material.

[0039] Among them, the composite interlayer tensile strength calculation model can be a model for calculating the magnitude of the composite interlayer tensile strength.

[0040] Optionally, the step of calculating the current composite interlayer tensile strength corresponding to the target composite material according to the unidirectional layer fiber cross-section description parameters, square matrix description parameters, and matrix interlayer fracture description parameters through a pre-set composite interlayer tensile strength calculation model includes: calculating the in-situ matrix strength through the pre-set composite interlayer tensile strength calculation model according to the unidirectional layer fiber cross-section description parameters, square matrix description parameters, and matrix interlayer fracture description parameters; calculating the total interlayer force corresponding to the target composite material according to the in-situ matrix strength; and calculating the current composite interlayer tensile strength corresponding to the target composite material according to the total interlayer force and the square matrix description parameters.

[0041] Among them, the in-situ matrix strength can be the magnitude of the strength used to describe the square matrix. The total interlayer force can be the magnitude of the total interlayer force corresponding to the target composite material.

[0042] Specifically, the step of calculating the in-situ matrix strength through the pre-set composite interlayer tensile strength calculation model according to the unidirectional layer fiber cross-section description parameters, square matrix description parameters, and matrix interlayer fracture description parameters includes: calculating the fiber volume ratio k according to the unidirectional layer fiber cross-section description parameters and square matrix description parameters through the formula where d is the diameter in the unidirectional layer fiber cross-section description parameters, and a is the side length in the square matrix description parameters; obtaining the average stress of the weak cross-section and the maximum stress of the weak cross-section, and calculating the stress concentration factor S through the formula f ; where σ represents the maximum stress of the weak cross-section; σ cc ; where σ max represents the maximum stress of the weak cross-section; σ nRepresents the weak cross-sectional average stress; obtain the matrix tensile strength, and according to the stress concentration factor, through the formula S mT(in-situ) = S mT / S cc , to calculate the in-situ matrix strength S mT(in-situ) ; where S mT represents the matrix tensile strength.

[0043] In this embodiment, the fiber volume ratio can be calculated according to the formula , and further,

[0044] Furthermore, since the interlaminar fracture of the matrix passes through the square matrix and the cross-section of the unidirectional layer fibers, an interlaminar weak layer can be formed, and the total fracture path length can also be calculated. Specifically, the total fracture path length includes the first fracture path length and the second fracture path length.

[0045] Specifically, as Figure 1b shown, the first fracture path length can be determined as a-d, and since the first fracture path length can be determined as the second fracture path length is Correspondingly, the total fracture path length can be obtained as

[0046]

[0047] Specifically, the obtaining of the weak cross-sectional average stress and the weak cross-sectional maximum stress includes: calculating the weak cross-sectional maximum stress according to the formula ; calculating the weak cross-sectional average stress according to the formula .

[0048] In this embodiment, according to the fiber volume ratio, the weak cross-sectional maximum stress and the weak cross-sectional average stress can be further calculated through the formulas and .

[0049] Furthermore, after calculating the weak cross-sectional average stress and the weak cross-sectional maximum stress, the stress concentration factor S can be calculated through the formula cc .

[0050] Correspondingly, obtain the matrix tensile strength S mT , and the calculated stress concentration factor S cc , through the formula S mT(in-situ) = S mT / S cc , to calculate the in-situ matrix strength S mT(in-situ) .

[0051] Specifically, calculating the total interlaminar force corresponding to the target composite material according to the in-situ matrix strength includes: according to the in-situ matrix strength, through the formula: to calculate the in-situ matrix interlaminar force; according to the matrix interlaminar fracture description parameters, to calculate the interlaminar force per unit depth of the fiber-matrix interface; according to the formula F a =F mt(in-situ) +F coating , to calculate the total interlaminar force F a ; where F coating represents the interlaminar force per unit depth of the fiber-matrix interface.

[0052] In this embodiment, according to the calculated in-situ matrix strength, the in-situ matrix interlaminar force F can be calculated through the formula mt(in-situ) .

[0053] Specifically, calculating the interlaminar force per unit depth of the fiber-matrix interface according to the matrix interlaminar fracture description parameters includes: obtaining the horizontal angle and the vertical stress in the matrix interlaminar fracture description parameters; through the formula to calculate the interlaminar force per unit depth of the fiber-matrix interface; where σ(s) represents the vertical stress, θ represents the horizontal angle, s represents the arc length, and the arc length includes the arc start point and the arc end point.

[0054] In this embodiment, Figure 1c is a schematic structural diagram of the unidirectional layer fiber cross-section and the square matrix interface load distribution corresponding to the target composite material. Figure 1d is a schematic structural diagram of the enlarged load distribution of the unidirectional layer fiber cross-section and the square matrix interface corresponding to the target composite material. Figure 1e is a schematic structural diagram of the force analysis at the unidirectional layer fiber cross-section and the square matrix interface corresponding to the target composite material.

[0055] Specifically, Figure 1c in σ i (s) is the vertical stress at i. Figure 1d in

[0056] Furthermore, according to the formula Since it can be deduced that where s 0 represents the arc start point; s 1 represents the arc end point.

[0057] Correspondingly, ds = Rdθ and it can be deduced that Fcoating = ∫ 0 -π Rσ(θ)sin(θ)dθ. Also, since σ(θ) is a constant, it can be determined that

[0058] In addition, S coatingT is the tensile strength of the fiber matrix interface, and that is, it is determined that

[0059] Furthermore, according to the formula F a = F mt(in-situ) + F coating , to calculate the total interlaminar force F a corresponding to the target composite material, it can be calculated that

[0060] Optionally, calculating the current composite interlaminar tensile strength corresponding to the target composite material according to the total interlaminar force and the square matrix description parameters includes: according to the formula to calculate the current composite interlaminar tensile strength S ilT .

[0061] In this embodiment, according to the formula and the formula it can be obtained that

[0062]

[0063] Furthermore, since S mT(in-situ) is equal to wherein, E m is the matrix elastic modulus; E f22 is the fiber transverse elastic modulus; k v represents the pore volume fraction in the composite material. If the stress concentration effect is considered in the composite material micromechanics, it can be determined that

[0064] S130. Determine the interface debonding analysis performance result corresponding to the target composite material through the current composite interlaminar tensile strength, and feedback the interface debonding analysis performance result to the user.

[0065] In this embodiment, after calculating the current composite interlaminar tensile strength, the interface debonding analysis performance result corresponding to the target composite material can be determined according to the current composite interlaminar tensile strength, and the interface debonding analysis performance result is fed back to the user, so as to realize more accurate analysis of the interface debonding of the target composite material and obtain the interface debonding analysis performance result.

[0066] Specifically, since the interfacial debonding state is simulated by the interfacial strength, that is, the interfacial debonding analysis performance result can be determined according to the current interlaminar tensile strength of the composite material. In detail, the interfacial debonding analysis performance result of complete debonding can be simulated by setting the current interlaminar tensile strength of the composite material to 0; the interfacial debonding analysis performance result of a perfect interface can also be simulated by keeping the interfacial strength at the matrix strength; and partial debonding or a weak interface can also be modeled by setting the interfacial strength to a value between 0 and the matrix strength. The degree of debonding of the interfacial debonding analysis performance result is reflected by the current interlaminar tensile strength of the composite material.

[0067] In addition, similarly, the calculation of the transverse tensile strength of the layer, the in-plane shear strength, and the interlaminar shear strength can be performed according to the above method.

[0068] The technical solution of the embodiment of the present invention is to obtain the material combined description parameters corresponding to the target composite material; wherein, the material combined description parameters include: the unidirectional layer fiber cross-section description parameter, the square matrix description parameter, and the matrix interlaminar fracture description parameter; according to the unidirectional layer fiber cross-section description parameter, the square matrix description parameter, and the matrix interlaminar fracture description parameter, through a pre-set interlaminar tensile strength calculation model of the composite material, the current interlaminar tensile strength corresponding to the target composite material is calculated; through the current interlaminar tensile strength, the interfacial debonding analysis performance result corresponding to the target composite material is determined, and the interfacial debonding analysis performance result is fed back to the user. It solves the problems of inaccurate and low-efficiency performance analysis of composite materials considering interfacial debonding, and improves the accuracy of the interfacial debonding performance analysis of composite materials.

[0069] Embodiment 2

[0070] Figure 2 FIG. 14 is a schematic structural diagram of a device for analyzing the interfacial debonding performance of a composite material provided in Embodiment 2 of the present invention. The device for analyzing the interfacial debonding performance of a composite material provided in this embodiment can be implemented by software and / or hardware, and can be configured in a terminal device or a server to implement the method for analyzing the interfacial debonding performance of a composite material in the embodiment of the present invention. As Figure 2 shown, the device includes: a material combined description parameter acquisition module 210, a current interlaminar tensile strength determination module 220, and an interfacial debonding analysis performance result determination module 230.

[0071] Among them, the material combined description parameter acquisition module 210 is used to acquire the material combined description parameters corresponding to the target composite material;

[0072] Among them, the material combined description parameters include: the unidirectional layer fiber cross-section description parameter, the square matrix description parameter, and the matrix interlaminar fracture description parameter;

[0073] The current composite interlaminar tensile strength determination module 220 is configured to calculate the current composite interlaminar tensile strength corresponding to the target composite material according to the unidirectional layer fiber cross-section description parameters, the square matrix description parameters, and the matrix interlaminar fracture description parameters through a pre-set composite interlaminar tensile strength calculation model;

[0074] The interface debonding analysis performance result determination module 230 is configured to determine the interface debonding analysis performance result corresponding to the target composite material through the current composite interlaminar tensile strength and feedback the interface debonding analysis performance result to the user.

[0075] The technical solution of the embodiment of the present invention is to obtain the material combined description parameters corresponding to the target composite material; wherein, the material combined description parameters include: unidirectional layer fiber cross-section description parameters, square matrix description parameters, and matrix interlaminar fracture description parameters; calculate the current composite interlaminar tensile strength corresponding to the target composite material according to the unidirectional layer fiber cross-section description parameters, the square matrix description parameters, and the matrix interlaminar fracture description parameters through a pre-set composite interlaminar tensile strength calculation model; determine the interface debonding analysis performance result corresponding to the target composite material through the current composite interlaminar tensile strength and feedback the interface debonding analysis performance result to the user. It solves the problems of inaccurate and low-efficiency performance analysis of composites considering interface debonding, and improves the accuracy of interface debonding performance analysis of composites.

[0076] Based on the above embodiments, the current composite interlaminar tensile strength determination module 220 may specifically include: an in-situ matrix strength calculation unit, which may specifically be configured to: calculate the in-situ matrix strength according to the unidirectional layer fiber cross-section description parameters, the square matrix description parameters, and the matrix interlaminar fracture description parameters through a pre-set composite interlaminar tensile strength calculation model; a total interlaminar force calculation unit, which may specifically be configured to: calculate the total interlaminar force corresponding to the target composite material according to the in-situ matrix strength; a current composite interlaminar tensile strength calculation unit, which may specifically be configured to: calculate the current composite interlaminar tensile strength corresponding to the target composite material according to the total interlaminar force and the square matrix description parameters.

[0077] Based on the above embodiments, the in-situ matrix strength calculation unit may specifically be configured to: according to the unidirectional layer fiber cross-section description parameters and the square matrix description parameters, through the formula to calculate the fiber volume ratio k f ; where d is the diameter in the unidirectional layer fiber cross-section description parameters, and a is the side length in the square matrix description parameters; obtain the average stress of the weak cross-section and the maximum stress of the weak cross-section, and calculate the stress concentration factor S through the formula to calculate the stress concentration factor S cc ; where σ maxRepresents the maximum stress of the weak cross-section; σ n Represents the average stress of the weak cross-section; Obtain the tensile strength of the matrix, and according to the stress concentration factor, through the formula S mT(in-situ) = S mT / S cc , calculate to obtain the in-situ matrix strength S mT(in-situ) ; where S mT represents the tensile strength of the matrix.

[0078] Based on the above embodiments, the in-situ matrix strength calculation unit may specifically be used for: According to the formula calculate to obtain the maximum stress of the weak cross-section; According to the formula calculate to obtain the average stress of the weak cross-section.

[0079] Based on the above embodiments, the total interlaminar force calculation unit may specifically be used for: According to the in-situ matrix strength, through the formula: calculate the in-situ matrix interlaminar force; According to the matrix interlaminar fracture description parameter, calculate to obtain the interlaminar force per unit depth of the fiber-matrix interface; According to the formula F a = F mt(in-situ) + F coating , calculate the total interlaminar force F a corresponding to the target composite material; where F coating represents the interlaminar force per unit depth of the fiber-matrix interface.

[0080] Based on the above embodiments, the total interlaminar force calculation unit may also specifically be used for: Obtain the horizontal angle and vertical stress in the matrix interlaminar fracture description parameter; Through the formula calculate to obtain the interlaminar force per unit depth of the fiber-matrix interface; where σ(s) represents the vertical stress, θ represents the horizontal angle, s represents the arc length, and the arc length includes the arc start point and the arc end point.

[0081] Based on the above embodiments, the current composite interlaminar tensile strength calculation unit may specifically be used for: According to the formula calculate to obtain the current composite interlaminar tensile strength S ilT corresponding to the target composite material.

[0082] The interface debonding performance analysis device of the composite material provided by the embodiments of the present invention can execute the interface debonding performance analysis method of the composite material provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects for executing the method.

[0083] Example Three

[0084] Figure 3FIG. 0 shows a schematic structural diagram of an electronic device 10 that can be used to implement Embodiment 3 of the present invention. The electronic device is intended to represent various forms of digital computers, such as, for example, laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as, for example, personal digital processors, cellular phones, smart phones, wearable devices (such as 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 present invention described and / or claimed herein.

[0085] As Figure 3 shown, the electronic device 10 includes at least one processor 11, and a memory communicatively connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc. The memory stores a computer program executable by the at least one processor. The processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 into the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0086] A plurality of components in the electronic device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0087] The processor 11 can be various general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the method for analyzing the interfacial debonding performance of composite materials.

[0088] In some embodiments, a method for analyzing the interfacial debonding performance of a composite material can be implemented as a computer program tangibly embodied 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 onto the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the method for analyzing the interfacial debonding performance of the composite material described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to execute the method for analyzing the interfacial debonding performance of the composite material by any other suitable means (e.g., by means of firmware).

[0089] The method includes: obtaining a combined material description parameter corresponding to a target composite material; wherein, the combined material description parameter includes: a unidirectional layer fiber cross-section description parameter, a square matrix description parameter, and a matrix interlayer fracture description parameter; calculating a current composite interlayer tensile strength corresponding to the target composite material according to the unidirectional layer fiber cross-section description parameter, the square matrix description parameter, and the matrix interlayer fracture description parameter through a pre-set composite interlayer tensile strength calculation model; determining an interfacial debonding analysis performance result corresponding to the target composite material through the current composite interlayer tensile strength, and feeding back the interfacial debonding analysis performance result to the user.

[0090] The various embodiments of the systems and techniques described above in this document 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), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, the programmable processor can be a dedicated or general programmable processor, can receive data and instructions from a storage system, at least one input device, and at least one output device, and can transmit the data and instructions to the storage system, the at least one input device, and the at least one output device.

[0091] A computer program for implementing the method of the present invention can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer program is executed by the processor, the functions / operations specified in the flowchart and / or block diagram are implemented. The computer program can be executed entirely on the machine, partially on the machine, as a stand-alone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0092] In the context of the present invention, a computer-readable storage medium can be a tangible medium that can contain or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. The computer-readable storage medium can include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, the computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or Flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0093] In order 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 a pointing device (e.g., a mouse or a trackball) through which the user can provide input to the electronic device. Other kinds of devices can also be used to provide interaction with the user; for example, the 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 acoustic input, voice input, or tactile input).

[0094] The systems and techniques described herein can be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system can be interconnected with each other by digital data communication in any form or medium (e.g., a communication network). Examples of communication networks include: local area network (LAN), wide area network (WAN), blockchain network, and the Internet.

[0095] A computing system can include a client and a server. The client and the server are generally far from each other and typically interact through a communication network. The client-server relationship is created by computer programs that run on respective computers and have a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or a cloud host, which is a host product in the cloud computing service system, and solves the defects of difficult management and weak business scalability existing in traditional physical hosts and VPS services.

[0096] It should be understood that various forms of the processes shown above can be used, with steps reordered, added, or deleted. For example, the steps recited in the present invention can be executed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved, and no limitation is imposed herein.

[0097] The above specific embodiments do not constitute a limitation on the protection scope of the present 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 principle of the present invention shall be included within the protection scope of the present invention.

[0098] Example 4

[0099] Embodiment 4 of the present invention further provides a computer-readable storage medium. The computer-readable instructions, when executed by a computer processor, are used to execute a method for analyzing the interfacial debonding performance of a composite material. The method includes: obtaining the material combined description parameters corresponding to the target composite material; wherein, the material combined description parameters include: the unidirectional layer fiber cross-section description parameters, the square matrix description parameters, and the matrix interlayer fracture description parameters; according to the unidirectional layer fiber cross-section description parameters, the square matrix description parameters, and the matrix interlayer fracture description parameters, through a preset composite material interlayer tensile strength calculation model, calculate the current composite material interlayer tensile strength corresponding to the target composite material; through the current composite material interlayer tensile strength, determine the interfacial debonding analysis performance result corresponding to the target composite material, and feedback the interfacial debonding analysis performance result to the user.

[0100] Of course, the computer-executable instructions of a computer-readable storage medium provided by the embodiments of the present invention are not limited to the method operations described above, and can also execute the related operations in the method for analyzing the interfacial debonding performance of the composite material provided by any embodiment of the present invention.

[0101] From the above description of the embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software and necessary general-purpose hardware. Of course, it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. The computer software product can be stored in a computer-readable storage medium, such as a floppy disk, a read-only memory (ROM), a random access memory (RAM), a flash memory (FLASH), a hard disk, or an optical disc of a computer, etc., including several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0102] It should be noted that in the embodiments of the above-mentioned device for analyzing the interfacial debonding performance of the composite material, the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be realized; in addition, the specific names of the functional units are only for the convenience of mutual distinction and do not limit the protection scope of the present invention.

[0103] The above specific embodiments do not constitute a limitation to the protection scope of the present 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 principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A method for analyzing the interfacial debonding performance of a composite material, characterized in that: include: Obtain material joint description parameters corresponding to the target composite material; The material joint description parameters include: unidirectional layer fiber cross-section description parameters, square matrix description parameters and matrix interlayer fracture description parameters; According to the unidirectional layer fiber cross-section description parameters, the square matrix description parameters and the matrix interlayer fracture description parameters, the current composite interlayer tensile strength corresponding to the target composite material is calculated by a pre-set composite interlayer tensile strength calculation model; Determine the interface debonding analysis performance result corresponding to the target composite material by using the current interlayer tensile strength of the composite material, and feed back the interface debonding analysis performance result to the user; The method of calculating the current composite material interlayer tensile strength corresponding to the target composite material by using a preset composite material interlayer tensile strength calculation model according to the unidirectional layer fiber cross-section description parameters, the square matrix description parameters and the matrix interlayer fracture description parameters includes: The in-situ matrix strength is calculated by using a preset composite material interlayer tensile strength calculation model according to the unidirectional layer fiber cross-section description parameters, the square matrix description parameters and the matrix interlayer fracture description parameters; Calculating a total interlaminar force corresponding to a target composite material according to the in-situ matrix strength; Calculating the current interlaminar tensile strength of the composite material corresponding to the target composite material according to the total interlaminar force and the square matrix description parameter; The in-situ matrix strength is calculated by using a preset composite material interlayer tensile strength calculation model according to the unidirectional layer fiber cross-section description parameters, the square matrix description parameters and the matrix interlayer fracture description parameters, including: According to the unidirectional fiber cross-section description parameters and the square matrix description parameters, the formula , to calculate the fiber volume ratio ; Where d is the diameter of the unidirectional fiber cross section description parameter, and a is the side length of the square matrix description parameter; Get the average stress and maximum stress of the weak cross section through the formula , to calculate the stress concentration factor ; in, represents the maximum stress in the weak cross section; represents the average stress of the weak cross section; Obtain the tensile strength of the matrix and, based on the stress concentration factor, use the formula , to calculate the in-situ matrix strength ; in, Indicates the tensile strength of the matrix.

2. The method according to claim 1, characterized in that The obtaining of the weak cross-section average stress and the weak cross-section maximum stress comprises: According to the formula , to calculate the maximum stress of the weak cross section; According to the formula , to calculate the average stress of the weak cross section.

3. The method according to claim 2, characterized in that The calculating the total interlaminar force corresponding to the target composite material according to the in-situ matrix strength comprises: According to the in-situ matrix strength, the formula: , to calculate the in-situ matrix interlayer forces; According to the matrix interlayer fracture description parameters, the unit depth interlayer force of the fiber matrix interface is calculated; According to the formula , to calculate the total interlaminar force corresponding to the target composite material ; in, It represents the interlaminar force per unit depth at the fiber-matrix interface.

4. The method according to claim 3, characterized in that The interlayer force per unit depth of the fiber-matrix interface is calculated based on the matrix interlayer fracture description parameter, including: Obtaining the horizontal angle and vertical stress in the matrix interlayer fracture description parameters; By formula , to calculate the interlaminar force per unit depth at the fiber-matrix interface; in, represents the vertical stress, represents the horizontal angle, s represents the arc length, and the arc length includes the arc start point and arc end point.

5. The method according to claim 4, characterized in that The calculating, according to the total interlaminar force and the square matrix description parameter, to obtain the current interlaminar tensile strength of the composite material corresponding to the target composite material comprises: According to the formula , to calculate the current interlaminar tensile strength of the composite material corresponding to the target composite material .

6. A composite material interface debonding performance analysis device, characterized in that: include: A material joint description parameter acquisition module is used to obtain material joint description parameters corresponding to the target composite material; The material joint description parameters include: unidirectional layer fiber cross-section description parameters, square matrix description parameters and matrix interlayer fracture description parameters; a current composite material interlayer tensile strength determination module, for calculating the current composite material interlayer tensile strength corresponding to the target composite material through a preset composite material interlayer tensile strength calculation model according to the unidirectional layer fiber cross-section description parameters, the square matrix description parameters and the matrix interlayer fracture description parameters; An interface debonding analysis performance result determination module is used to determine the interface debonding analysis performance result corresponding to the target composite material according to the current interlayer tensile strength of the composite material, and feed back the interface debonding analysis performance result to the user; Wherein, the current composite material interlayer tensile strength determination module includes: An in-situ matrix strength calculation unit, used to calculate the in-situ matrix strength through a preset composite interlayer tensile strength calculation model according to the unidirectional layer fiber cross-section description parameters, square matrix description parameters and matrix interlayer fracture description parameters; A total interlaminar force calculation unit, used to calculate the total interlaminar force corresponding to the target composite material according to the in-situ matrix strength; a current composite material interlayer tensile strength calculation unit, used to calculate the current composite material interlayer tensile strength corresponding to the target composite material according to the total interlayer force and the square matrix description parameter; The in-situ matrix strength calculation unit is used to calculate the strength of the matrix according to the unidirectional fiber cross-section description parameters and the square matrix description parameters through the formula , to calculate the fiber volume ratio ; where d is the diameter of the unidirectional fiber cross-section description parameter, and a is the side length of the square matrix description parameter; the weak cross-section average stress and the weak cross-section maximum stress are obtained by the formula , to calculate the stress concentration factor ;in, represents the maximum stress in the weak cross section; represents the average stress of the weak cross section; obtain the tensile strength of the matrix, and according to the stress concentration factor, through the formula , to calculate the in-situ matrix strength ;in, Indicates the tensile strength of the matrix.

7. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, the method for analyzing the interface debonding performance of the composite material according to any one of claims 1 to 5 is implemented.

8. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for analyzing the interfacial debonding performance of a composite material according to any one of claims 1 to 5 when executed.

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