A method, apparatus, device, medium, and product for inducing crack propagation along a predetermined path

Abstract

The application discloses a method, device, equipment, medium and product for inducing crack propagation along a predetermined path, and relates to the technical field of crack induction, which comprises the following steps: predicting a crack initiation position by applying a working load to a three-dimensional model of a target component; predicting a crack propagation path generated when the target component is impacted by an external load based on the three-dimensional model of the predicted crack initiation position; selecting a reinforcing area material according to the modulus of a base material of the target component; and arranging an array of reinforcing areas with a specific interface form on the crack propagation path by using the reinforcing area material, so that the crack propagates along the preset interface path. The application can accurately control the crack propagation direction and reduce the risk of secondary damage caused by disordered crack propagation.

Description

Technical Field

[0001] This application relates to the field of crack induction technology, and in particular to a method, apparatus, equipment, medium and product for inducing crack propagation along a predetermined path. Background Technology

[0002] In the design and manufacturing of aircraft, a large portion of the structures serve a protective function, such as fuselage skin, radomes, air intake deflectors, and even Whipple shields used in spacecraft bulkheads. The primary function of these protective structures is to protect internal core components from damage under impact loads. However, when these protective structures are subjected to enormous additional loads, failure is unavoidable. Effectively controlling the failure mode of these protective structures—that is, controlling the direction of crack propagation and directing the load and shock wave to non-core areas—plays a crucial role in the safe return of the aircraft. For critical protective components in fixed locations, their load modes and directions are often singular.

[0003] Research has shown that when controlling crack deflection, the stress intensity factor at the crack tip may decrease, slowing down the crack propagation rate. Therefore, research is needed on how to induce crack deflection by designing micro-region strength factors, redirecting the crack to a safer region. Currently, the main methods for inducing crack deflection include hybrid loading, pre-fabricated holes, notch design, and microstructure control. Hybrid loading involves simultaneously applying Type I (tensile) and Type II (shear) loads, utilizing the interaction between the tensile strength factor (KⅠ) and shear strength factor (KⅡ) at the crack tip to deviate the crack from its original propagation plane. However, as KⅡ increases, the crack will turn towards the shear-dominated direction. This method is limited in applicability because the loading mode in actual components is often a single, fixed form. Pre-fabricated holes or notches alter the stress field distribution at the crack tip through stress concentration. When the crack approaches the hole, the stress field at the tip is dispersed, and the change in the local stress intensity factor ratio induces deflection. However, such structural defects significantly weaken the overall strength. Summary of the Invention

[0004] The purpose of this application is to provide a method, apparatus, equipment, medium, and product for inducing crack propagation along a predetermined path, which can precisely control the crack propagation direction and reduce the risk of secondary damage caused by disordered crack propagation.

[0005] To achieve the above objectives, this application provides the following solution:

[0006] In a first aspect, this application provides a method for inducing crack propagation along a predetermined path, comprising:

[0007] By applying working loads to the three-dimensional model of the target component, the location of crack initiation can be predicted.

[0008] Based on a three-dimensional model that predicts the location of crack initiation, the crack propagation path is predicted when the target component is subjected to an external load impact.

[0009] The reinforcing zone material is selected based on the modulus of the matrix material of the target component;

[0010] Using the aforementioned reinforced zone material, an array of reinforced zones with specific interface morphology is arranged along the crack propagation path, causing the crack to propagate along a preset interface path.

[0011] Optionally, the location of crack initiation can be predicted by applying a working load to a three-dimensional model of the target component, specifically including:

[0012] A working load is applied to the three-dimensional model of the target component, and the crack initiation location is predicted using finite element analysis.

[0013] Optionally, based on the three-dimensional model predicting the crack initiation location, the crack propagation path is predicted when the target component receives an external load impact, specifically including:

[0014] The three-dimensional model is imported into fracture mechanics software, and material elastic or elastoplastic parameters and damage criteria are assigned to the three-dimensional model. Constraints are added, and structural meshes are generated.

[0015] The structural network dividing the crack initiation locations is encrypted;

[0016] An external load is applied to the encrypted 3D model, and the crack propagation is dynamically characterized by the enrichment function of the extended finite element method to obtain the crack propagation path.

[0017] Optionally, the damage criteria include maximum principal strain, equivalent plastic strain, or energy threshold.

[0018] Optionally, the constraints include fixed constraints, frictional constraints, and contact constraints.

[0019] Optionally, the reinforcing zone material is selected based on the modulus of the matrix material of the target component, specifically including:

[0020] The selected reinforcement zone material satisfies the condition that the ratio of the modulus of the matrix material to the modulus of the reinforcement zone material is greater than 6.

[0021] Secondly, this application provides an apparatus for inducing crack propagation along a predetermined path, wherein the apparatus for inducing crack propagation along a predetermined path applies the method for inducing crack propagation along a predetermined path, and the apparatus for inducing crack propagation along a predetermined path includes:

[0022] The crack initiation location prediction module is used to predict the crack initiation location by applying a working load to the three-dimensional model of the target component.

[0023] A crack propagation path generation module is used to predict the crack propagation path generated when the target component is subjected to an external load impact, based on a three-dimensional model that predicts the crack initiation location.

[0024] The reinforcement zone material selection module is used to select the reinforcement zone material based on the modulus of the matrix material of the target component;

[0025] The induced path generation module is used to arrange an array of reinforced zones with specific interface morphology on the crack propagation path using the reinforced zone material, so that the crack propagates along a preset interface path.

[0026] Thirdly, this application provides a computer device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the method for inducing crack propagation along a predetermined path as described above.

[0027] Fourthly, this application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for inducing crack propagation along a predetermined path as described above.

[0028] Fifthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the method for inducing crack propagation along a predetermined path as described above.

[0029] According to the specific embodiments provided in this application, the following technical effects are disclosed:

[0030] This application provides a method, apparatus, equipment, medium, and product for inducing crack propagation along a predetermined path. The method involves selecting a reinforcing zone material based on the modulus of the matrix material of the target component; using the reinforcing zone material, an array of reinforcing zones with specific interface morphologies is arranged along the crack propagation path, causing the crack to propagate along a preset interface path. This achieves a shift in crack direction from passive, random propagation to active, controllable propagation, precisely controlling the crack propagation direction, reducing the risk of secondary damage caused by disordered crack propagation, and extending the service life of the target component. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1A flowchart illustrating a method for inducing crack propagation along a predetermined path, provided in an embodiment of this application;

[0033] Figure 2 This is a schematic diagram of a direct through-crack provided in one embodiment of this application;

[0034] Figure 3 This is a schematic diagram of a deflection-through crack provided in one embodiment of this application;

[0035] Figure 4 This is a schematic diagram of an interface-deflected crack provided in one embodiment of this application;

[0036] Figure 5 A schematic diagram of the reinforcement zone design and pre-defined crack propagation path provided in an embodiment of this application;

[0037] Figure 6 This is a schematic diagram of a three-dimensional model of an antenna radome provided in one embodiment of this application;

[0038] Figure 7 This is a Von Mises stress cloud diagram of a radome paradigm provided in one embodiment of this application;

[0039] Figure 8 This is a schematic diagram of a local encrypted mesh partitioning strategy provided in an embodiment of this application;

[0040] Figure 9 This is a two-dimensional schematic diagram of the actual crack propagation path cross-section provided in an embodiment of this application;

[0041] Figure 10 This is a schematic diagram of a preset crack propagation path provided in an embodiment of this application;

[0042] Figure 11 This is a schematic diagram of the actual crack propagation path provided in an embodiment of this application;

[0043] Figure 12 A schematic diagram of the functional modules of a device for inducing crack propagation along a predetermined path, provided in an embodiment of this application;

[0044] Figure 13 This is a schematic diagram of the structure of a computer device provided in an embodiment of this application. Detailed Implementation

[0045] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0046] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] To address the problems of uncontrollable crack propagation paths and the potential for critical structural failure in existing technologies, this application proposes an innovative method to induce crack propagation along a predetermined path by constructing a spatially distributed multi-material composite heterogeneous system and designing the interface geometry. First, a material strength factor database is established based on differences in material strength, modulus, and interface morphology. Second, a heterogeneous interface is constructed according to load requirements, simulating the variation of stress intensity factors at the crack tip, and clarifying the influence of the heterogeneous interface on the crack based on fracture mechanics theory. Third, a spatial distribution model of the heterogeneous materials is constructed based on the degree of micro-crack deflection, realizing the transformation of crack direction from passive random propagation to active controllability. By rationally planning the material interfaces and safe crack propagation paths, the crack can be systematically deflected to a safe region, significantly improving the overall damage tolerance of the component while avoiding damage to the main load-bearing structure.

[0048] In one exemplary embodiment, this application discloses a method for inducing crack propagation along a predetermined path, such as... Figure 1 As shown, the method for inducing crack propagation along a predetermined path includes steps 101-104.

[0049] Step 101: Predict the location of crack initiation by applying working load to the three-dimensional model of the target component.

[0050] Step 102: Based on the three-dimensional model that predicts the crack initiation location, predict the crack propagation path when the target component is subjected to an external load impact.

[0051] Step 103: Select the reinforcing zone material based on the modulus of the matrix material of the target component.

[0052] Step 104: Using the reinforced zone material, arrange a reinforced zone array with a specific interface morphology on the crack propagation path, so that the crack propagates along the preset interface path.

[0053] In an exemplary embodiment, prior to step 101, the method for inducing crack propagation along a predetermined path further includes: acquiring a database of intrinsic material properties; and establishing a database of candidate materials based on the material properties, strength, modulus, and reaction rules between composite particles and the parent material.

[0054] The candidate material database includes material name, material type, and material properties. Material properties include material properties, strength, modulus, and the reaction law between composite particles and the parent material.

[0055] The material types include organic materials, metallic materials, and ceramic materials; and each type of material can be further divided according to strength, modulus, and strength factor, as shown in Table 1. The intrinsic properties of these materials are an important basis for constructing spatially distributed complexes.

[0056] Table 1 Strength, stiffness, and fracture toughness of several typical materials

[0057]

[0058] In an exemplary embodiment, this application creates a three-dimensional model and applies loads based on the working environment, load characteristics, dimensional accuracy, and material performance requirements of the protective structure, and predicts the crack initiation location using finite element analysis. Step 101 specifically includes: applying working loads to the three-dimensional model of the target component and using finite element analysis to predict the crack initiation location.

[0059] The specific steps of finite element analysis are as follows: First, import the 3D model into the mechanical simulation software and define material properties that conform to the actual working conditions; then, perform targeted meshing of the 3D model according to the characteristics of the loading area to ensure that the mesh density of key parts meets the accuracy requirements; subsequently, apply boundary conditions equivalent to the actual constraints (including fixed supports, frictional contact, etc.) at the boundaries of the 3D model to accurately simulate the motion restriction of the target component under load; finally, apply the working load to perform static solution, and identify the maximum stress concentration area through the generated stress cloud map. This area is the weak point (crack initiation location) where crack initiation is most likely to occur during the service of the target component. The maximum stress concentration area refers to the stress greater than 80% of the maximum stress range.

[0060] The target component is an aerospace part.

[0061] In one exemplary embodiment, step 102 specifically includes:

[0062] The three-dimensional model is imported into fracture mechanics software, and material elastic or elastoplastic parameters and damage criteria are assigned to the three-dimensional model. Constraints are added, and a structural mesh is generated.

[0063] The structural network dividing the crack initiation locations is encrypted.

[0064] An external load is applied to the encrypted 3D model, and the crack propagation is dynamically characterized by the enrichment function of the Extended Finite Element Method (XFEM) to obtain the crack propagation path of the component under external impact.

[0065] The damage criteria include the maximum principal strain (Maxpe), the equivalent plastic strain, or the energy threshold.

[0066] The constraint conditions include fixed constraints, friction constraints, and contact constraints.

[0067] Based on the service environment of the component and the characteristics of the matrix material, micro-area strengthening materials are selectively chosen. In the constructed composite structure, the crack propagation path is jointly affected by the modulus difference between the matrix and the strengthening area materials and the interfacial toughness, which are specifically manifested in the following three typical modes.

[0068] The first typical mode: When the moduli of the matrix material and the strengthening area material are close, i.e., E1 / E2≈1, and the interfacial toughness is high (such as a pure Al matrix and an AlSi10Mg strengthening area, E1 / E2 = 75 / 70≈1.1), where E1 is the modulus of the matrix material and E2 is the modulus of the strengthening area material, the crack will directly penetrate the interface vertically and expand, as Figure 2 shown.

[0069] The second typical mode: When the modulus difference increases to a medium range (1 < E1 / E2 < 6), for example, a pure Al matrix and an Al2O3 ceramic strengthening area (E1 / E2 = 350 / 70 = 5), although the crack still penetrates the interface, due to the sudden change in modulus at the interface causing stress redistribution, the crack path will deflect and form a non-vertical propagation trajectory, as Figure 3 shown.

[0070] The third typical mode: When the modulus difference is significant (E1 / E2 > 6) and the interfacial bonding is weak (such as a pure Al matrix and a SiC strengthening area, E1 / E2 = 450 / 70 = 6.4), under the combined action of the high stress concentration at the crack tip at the interface and the low interfacial toughness, the crack will choose to expand along the interface rather than penetrate the material, as Figure 4 shown. This phenomenon of crack expansion along the interface stems from two aspects: on the one hand, the huge modulus difference causes a sharp stress gradient at the front edge of the hard strengthening area at the crack tip, making the interface a more optimal path for energy release; on the other hand, the low interfacial toughness weakens the ability of the interface to resist crack expansion, prompting the crack to undergo delamination or peeling along the interface, ultimately forming a typical interfacial failure mode.

[0071] Therefore, in order to enable the crack to expand along the predetermined path (interface), two materials with a significant modulus difference (E1 / E2 > 6) need to be selected.

[0072] In an exemplary embodiment, step 103 specifically includes: The selected strengthening area material satisfies that the ratio of the modulus of the matrix material to the modulus of the strengthening area material is greater than 6.

[0073] In an exemplary embodiment, the method of this application further includes, after step 104: simulating and predicting the evolution process of the actual crack propagation path with directional characteristics, and verifying the active control effect of the strengthening zone on the crack propagation direction.

[0074] Based on the crack propagation path obtained from the simulation in step 104, and considering the actual operating conditions of the component under complex service environments, an active control strategy for designing reinforcement zones along the crack propagation path is proposed. Specifically, by arranging an array of reinforcement zones with specific interface morphologies along the crack path, the directional modulation of the stress field at the crack tip by their geometric configuration is utilized to achieve precise control of crack propagation behavior: when the crack tip propagates to the reinforcement zone, its stress field fluctuates significantly due to the geometric abrupt change in the interface morphology (such as the wall contact of honeycomb units or the rhomboid corner effect), and the principal stress direction is redirected to the weak direction of the reinforcement zone interface, forcing the crack to propagate along the preset interface path, such as... Figure 5 As shown in the figure. Simultaneously, the synergistic effect of the high elastic modulus material properties and geometric configuration of the reinforced region material can further absorb crack propagation energy, suppress the risk of longitudinal penetration, and ultimately guide the crack to a predetermined non-critical region. Typical heterogeneous material combinations for crack propagation along the interface are shown in Table 2.

[0075] Specific interface shapes include geometric configurations such as square, honeycomb, and rhombus.

[0076] Table 2 Typical heterogeneous material combinations with crack propagation along the interface

[0077]

[0078] In an exemplary embodiment, after applying the selected reinforcement material from step 103 to the matrix and reinforcement zone using mechanical simulation software, boundary constraints are set for the three-dimensional model, and an impact load consistent with that in step 102 is applied for dynamic analysis. To accurately characterize the crack propagation behavior along the predetermined interface direction, a dynamic propagation finite element method is used. A local mesh refinement strategy is implemented in the interface region. The evolution process of the actual crack propagation path with directional characteristics is calculated, simulated, and predicted using the progressive damage criterion at the crack tip and the dynamic stress intensity factor, verifying the active control effect of the reinforcement zone on the crack propagation direction.

[0079] This application, through the design of a heterogeneous material system and optimization of the interface geometry, enables components to effectively maintain overall structural strength performance under a single external load, while precisely guiding cracks to deflect along a predetermined path. This active control mechanism can significantly reduce the risk of secondary damage caused by disordered crack propagation, extending the service life of components while ensuring structural safety.

[0080] In an exemplary embodiment, a method for inducing crack propagation along a predetermined path is described using an aircraft radome as an example. The specific implementation steps are as follows: steps 1-5.

[0081] Step 1: Based on the characteristics of the aircraft radome's operating environment, wind load distribution, electromagnetic wave conduction requirements, and antenna system layout requirements, the aerodynamic shape (streamlined) and structural dimensions are first determined through parametric design. A 3D modeling software is used to construct the radome model, such as... Figure 6 As shown, the radome was imported into a finite element analysis system for mechanical simulation. Given that glass fiber reinforced plastic (GFRP) possesses both excellent dielectric and mechanical properties, it was selected as the matrix material and assigned material parameters. In the numerical simulation, base fixing constraints and component contact boundary conditions were set, and an external impact load was applied to the top of the radome. A global 20mm fine tetrahedral mesh was used for discretization. The Von Mises stress contour plot of the radome was obtained, as shown below. Figure 7 As shown, through Von Mises stress cloud diagram analysis, the stress concentration area (potential crack initiation location) was determined to be located at the top of the cover.

[0082] Step 2: Based on the potential crack initiation region at the top of the enclosure identified in Step 1, the glass fiber reinforced plastic is first assigned an elastic modulus (E = 20 GPa), Poisson's ratio (ν = 0.3), and plastic hardening parameters. Then, a material failure threshold (critical strain ε = 0.01) is defined based on the maximum principal strain damage criterion. A gradient meshing strategy is adopted, transitioning the global mesh size from 20 mm to 5 mm in the crack-sensitive region (within a 50 mm radius at the top), constructing a high-resolution computational domain, such as... Figure 8 As shown. In the boundary condition settings, the friction coefficient (μ = 0.15) between the fully constrained base and the assembly surface is reproduced, and a dynamic impact load is applied in the normal direction of the top of the cover. The actual crack propagation path is simulated using the extended finite element method, as shown. Figure 9 As shown.

[0083] Step 3: As a critical protective structure for the aircraft's electromagnetic system, the material selection for the aircraft radome must combine environmental resistance and electromagnetic compatibility. Based on the selection of glass fiber reinforced plastic as the matrix material, to ensure that subsequent crack paths can propagate directionally along the reinforced zone interface, the reinforced zone material must meet the mechanical requirement of an elastic modulus greater than 120 GPa. Based on the unique wave transmission properties, excellent heat resistance, and lightweight advantages of ceramic materials, silicon carbide (SiC) ceramic was ultimately selected as the reinforced zone material. This combined design can effectively guide the crack propagation path and meet the comprehensive functional requirements of the electromagnetic system.

[0084] Step 4: Based on the analysis of the actual crack propagation path obtained in Step 2, to prevent the crack from continuing to extend downwards along the current path and intruding into the internal antenna facilities, causing structural damage, it is necessary to introduce honeycomb-shaped reinforcement zones at key locations along the crack propagation path for active intervention, such as... Figure 10 As shown in section (a), this reinforced zone, through its honeycomb biomimetic structure design, utilizes its high specific stiffness and periodic arrangement to significantly alter the local stress field distribution when the crack tip reaches the boundary of the reinforced zone: the principal stress direction at the crack tip deflects at the honeycomb unit interface, causing the crack propagation path to change from a single longitudinal extension to a transverse bifurcation propagation towards both sides of the reinforced zone, as shown in section (a). Figure 10 As shown in (b). In this process, the geometric constraint effect of the honeycomb structure and the high elastic modulus of the reinforced region material (SiC ceramic) work together to effectively consume crack propagation energy, ultimately achieving crack tip passivation and stopping propagation.

[0085] Step 5: Based on the heterogeneous combination of matrix material (GFRP) and reinforcing zone material (SiC) determined in Step 3, and combined with the honeycomb reinforcing zone configuration proposed in Step 4, the model is divided into a matrix region and a honeycomb reinforcing zone according to the geometric configuration. Material properties are assigned to GFRP and SiC respectively. Frictional constraints between the matrix and reinforcing zone are defined using an interface contact algorithm, and fixed support constraints are applied at the mounting end of the component. To balance computational efficiency and crack propagation simulation accuracy, a gradient meshing strategy is adopted: an initial mesh size of 20mm is set in the matrix region far from the reinforcing zone, and the mesh is gradually refined to 5mm as it approaches the reinforcing zone boundary. The same external load as in Step 2 is applied, and the dynamic extended finite element method is used. By defining the maximum principal stress criterion and the propagation criterion (energy release rate threshold), the actual crack propagation path after the addition of the honeycomb reinforcing zone is simulated, as shown below. Figure 11 As shown, by comparing the crack penetration path of the unreinforced model, the model with the honeycomb reinforcement zone showed that the crack propagated along the preset path, verifying the active control effect of the honeycomb reinforcement zone on the crack propagation direction.

[0086] This application employs a microstructure control method. By introducing heterogeneous interfaces, second-phase particles, or customized micromorphological designs, it utilizes the differences in interface properties and the disturbance of the stress field at the crack tip by hard particles to enhance the shear component and guide deflection. Alternatively, it forces the crack to propagate along a predetermined path through structural morphological constraints, achieving effective crack deflection in a designer-defined manner under a single load. This method combines high flexibility and customizability, enabling precise control of crack propagation direction without significantly reducing material strength.

[0087] Based on the same inventive concept, this application also provides an apparatus for inducing crack propagation along a predetermined path to implement the above-described method for inducing crack propagation along a predetermined path. The solution provided by this apparatus is similar to the solution described in the above-described method. Therefore, the specific limitations of one or more embodiments of the apparatus for inducing crack propagation along a predetermined path provided below can be found in the limitations of the method for inducing crack propagation along a predetermined path described above, and will not be repeated here.

[0088] In one exemplary embodiment, such as Figure 12 As shown, an apparatus for inducing crack propagation along a predetermined path is provided. The apparatus for inducing crack propagation along a predetermined path applies the method for inducing crack propagation along a predetermined path. The apparatus for inducing crack propagation along a predetermined path includes:

[0089] The crack initiation location prediction module is used to predict the crack initiation location by applying a working load to a three-dimensional model of the target component.

[0090] The crack propagation path generation module is used to predict the crack propagation path generated when the target component is subjected to an external load impact, based on a three-dimensional model that predicts the crack initiation location.

[0091] The reinforcement zone material selection module is used to select the reinforcement zone material based on the modulus of the matrix material of the target component.

[0092] The induced path generation module is used to arrange an array of reinforced zones with specific interface morphology on the crack propagation path using the reinforced zone material, so that the crack propagates along a preset interface path.

[0093] In one exemplary embodiment, a computer device is provided, which may be a server or a terminal, and its internal structure diagram may be as follows. Figure 13As shown, the computer device includes a processor, memory, input / output (I / O) interfaces, and a communication interface. The processor, memory, and I / O interfaces are connected via a system bus, and the communication interface is also connected to the system bus via the I / O interfaces. The processor provides computational and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The database stores data that induces crack propagation along a predetermined path. The I / O interfaces are used for exchanging information between the processor and external devices. The communication interface is used for communicating with external terminals via a network. When executed by the processor, the computer program implements a method for inducing crack propagation along a predetermined path.

[0094] Those skilled in the art will understand that Figure 13 The structures shown are merely block diagrams of some structures related to the present application and do not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than shown in the figures, or combine certain components, or have different component arrangements. In an exemplary embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and the processor executes the computer program to implement the steps in the above-described method embodiments.

[0095] In one exemplary embodiment, a computer-readable storage medium is provided storing a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0096] In one exemplary embodiment, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps in the above-described method embodiments.

[0097] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, data stored, data displayed, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of the relevant data must comply with relevant regulations.

[0098] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM).

[0099] The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic units, data processing logic units, etc., and are not limited to these.

[0100] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0101] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. Furthermore, those skilled in the art will recognize that, based on the ideas of this application, there will be changes in the specific implementation methods and application scope. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A method of inducing crack propagation along a predetermined path, characterized by, The method for inducing the crack to propagate along the predetermined path comprises: predicting the crack initiation position by applying a working load to a three-dimensional model of a target component; predicting a crack propagation path generated when the target component is impacted by an external load based on the three-dimensional model in which the crack initiation position is predicted; selecting a strengthening zone material according to the modulus of a base material of the target component, specifically including that the selected strengthening zone material satisfies a ratio of the modulus of the base material to the modulus of the strengthening zone material being greater than 6; arranging a strengthening zone array of a specific interface form on the crack propagation path using the strengthening zone material to make the crack propagate along a preset interface path, specifically including that directional modulation of a crack tip stress field is achieved by using a geometric configuration of the strengthening zone array to control the crack propagation behavior; meanwhile, the crack propagation energy is absorbed by the synergistic effect of the elastic modulus material property of the strengthening zone material and the geometric configuration of the strengthening zone array to inhibit the risk of longitudinal penetration and guide the crack to the preset non-critical area.

2. The method of inducing crack propagation along a predetermined path according to claim 1, wherein, The method for predicting the crack initiation position by applying a working load to a three-dimensional model of a target component comprises: applying a working load to a three-dimensional model of a target component and predicting the crack initiation position by using finite element analysis.

3. The method of inducing crack propagation along a predetermined path according to claim 1, wherein, The method for predicting a crack propagation path generated when the target component is impacted by an external load based on the three-dimensional model in which the crack initiation position is predicted comprises: importing the three-dimensional model into a fracture mechanics software, assigning material elasticity or elastoplasticity parameters and damage criteria to the three-dimensional model, adding constraint conditions, and dividing a structure grid; encrypting the structure network divided at the crack initiation position; applying an external load to the three-dimensional model after the encryption processing, dynamically representing crack propagation by using an enrichment function of an extended finite element method, and obtaining a crack propagation path.

4. The method of inducing crack propagation along a predetermined path according to claim 3, wherein, The damage criteria include maximum principal strain, equivalent plastic strain, or energy threshold.

5. The method of inducing crack propagation along a predetermined path according to claim 3, wherein, The constraint conditions include fixed constraints, friction constraints, and contact constraints.

6. An apparatus for inducing crack propagation along a predetermined path, characterized by The device for inducing the crack to propagate along the predetermined path applies the method for inducing the crack to propagate along the predetermined path according to any one of claims 1-5, and the device for inducing the crack to propagate along the predetermined path comprises: a crack initiation position prediction module configured to predict the crack initiation position by applying a working load to a three-dimensional model of a target component; a crack propagation path generation module configured to predict a crack propagation path generated when the target component is impacted by an external load based on the three-dimensional model in which the crack initiation position is predicted; a strengthening zone material selection module configured to select a strengthening zone material according to the modulus of a base material of the target component; an induced path generation module configured to arrange a strengthening zone array of a specific interface form on the crack propagation path using the strengthening zone material to make the crack propagate along a preset interface path.

7. A computer device comprising: A memory, a processor, and a computer program stored on the memory and executable on the processor, characterized in that the processor executes the computer program to implement the method for inducing the crack to propagate along the predetermined path according to any one of claims 1-5.

8. A computer-readable storage medium having stored thereon a computer program, characterized in that, The computer program, which is executed by a processor, implements the method of inducing crack propagation along a predetermined path according to any one of claims 1-5.

9. A computer program product comprising a computer program, characterized in that, The computer program, which is executed by a processor, implements the method of inducing crack propagation along a predetermined path according to any one of claims 1-5.

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