Shot peening forming prestress loading mode determining method and device, electronic equipment and storage medium

Abstract

The invention discloses a shot peening forming prestress loading mode determining method and device, electronic equipment and a storage medium. The method comprises the following steps: constructing a pre-stress loading simplified model, performing first pre-stress loading simulation on the pre-stress loading simplified model based on a preset pre-stress loading mode, and determining a first surface stress state distribution condition of a to-be-processed part; a prestress loading standard model is constructed for second prestress loading simulation, the second surface stress state distribution condition of the to-be-machined part is determined, and a surface stress state model is constructed; based on a preset prestress loading mode, an actual prestress loading experiment is conducted, and the actual surface stress state distribution condition of the to-be-machined part is determined; the surface stress state model is corrected according to the actual surface stress state distribution condition, and the corrected surface stress state model is adopted to determine a target prestress loading mode of the to-be-machined part; precise control over the prestress is achieved, and the prestress applying efficiency and accuracy are improved.

Description

Technical Field

[0001] This invention relates to the field of shot peening forming technology, and in particular to a method, apparatus, electronic device and storage medium for determining the prestress loading mode of shot peening forming. Background Technology

[0002] Shot peening is a forming method that uses a high-speed stream of metal projectiles to propel a metal sheet onto its surface, causing plastic deformation of the surface material and creating a residual stress field, which gradually shapes the part to achieve its desired curvature. Due to its significant advantages such as high production efficiency, wide applicability, and excellent service performance, it has become the preferred method for forming wing panels of many regional jets and large mainline aircraft such as Boeing and Airbus.

[0003] Traditional prestressed forming refers to a forming method in which a sheet is first elastically pre-bent on a prestressed fixture, causing it to bend under bending moment, and then shot-peened onto the tension surface of the sheet. During prestressed shot peening, the peened surface is subjected to the impact of the shot under tensile stress. Compared to a free state, this tensile stress promotes the elongation of the peened material, deepens the compressive stress layer, and increases the average value of the residual compressive stress in the compressive stress layer, ensuring that the sheet can be formed in the required direction. However, it is difficult to achieve a sheet with a large deformation in one direction and a small deformation in another.

[0004] Furthermore, when a large panel undergoes elastic pre-bending under external force, the change in the potential energy of the external force is entirely converted into strain energy and stored inside the object. As the external force gradually increases, the panel material will undergo a transition from an elastic state to a plastic state, which is a continuous process. In particular, most aircraft panels are made of high-strength aluminum alloy materials, which do not have a clear yield state. Therefore, determining the critical state of prestressing for large panels is a technical challenge in prestressing forming. Summary of the Invention

[0005] This invention provides a method, apparatus, electronic device, and storage medium for determining the prestress loading mode of shot peening forming. It uses simulation model technology to determine the distribution of prestress on the surface of the part to be processed under different preset prestress loading modes, so as to determine the target prestress loading mode required for the part to be processed under different requirements, thereby achieving precise control of the prestress on the surface of the part to be processed and improving the efficiency and accuracy of prestress application.

[0006] According to one aspect of the present invention, a method for determining the prestressing loading mode for shot peening is provided, the method comprising:

[0007] A simplified prestress loading model is constructed, and a first prestress loading simulation is performed on the simplified prestress loading model based on a preset prestress loading method to determine the distribution of the first surface stress state of the part to be processed.

[0008] A standard model for prestressing loading is constructed to simulate the second prestressing loading, determine the distribution of the second surface stress state of the part to be processed, and construct a surface stress state model.

[0009] An actual prestressing loading experiment was conducted based on a preset prestressing loading method to determine the actual surface stress distribution of the parts to be processed.

[0010] The surface stress state model is modified based on the actual surface stress state distribution, and the target prestress loading method of the part to be processed is determined using the modified surface stress state model.

[0011] According to another aspect of the present invention, a device for determining the prestressing loading mode of shot peening is provided, the device comprising:

[0012] The simplified model first simulation module is used to construct a simplified prestressed loading model and perform a first prestressed loading simulation on the simplified prestressed loading model based on a preset prestressed loading method to determine the distribution of the first surface stress state of the part to be processed.

[0013] The second simulation module of the standard model is used to construct a prestressed loading standard model to perform a second prestressed loading simulation, determine the distribution of the second surface stress state of the part to be processed, and construct a surface stress state model.

[0014] The actual prestress loading experiment module is used to conduct actual prestress loading experiments based on a preset prestress loading method to determine the actual surface stress distribution of the part to be processed.

[0015] The prestress loading method determination module is used to correct the surface stress state model based on the actual surface stress state distribution, and to determine the target prestress loading method of the part to be processed using the corrected surface stress state model.

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

[0017] At least one processor; and

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

[0019] The memory stores a computer program that can be executed by the at least one processor, which is then executed by the at least one processor to enable the at least one processor to perform the shot peening prestressing loading method determination method according to any embodiment of the present invention.

[0020] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the shot peening forming prestress loading method determination method according to any embodiment of the present invention.

[0021] According to another aspect of the present invention, a computer program product is provided, the computer program product comprising a computer program that, when executed by a processor, implements the shot peening forming prestressing loading method determination method as described in any embodiment of the present invention.

[0022] The technical solution of this invention involves constructing a simplified prestressing loading model and performing a first prestressing loading simulation on the simplified model based on a preset prestressing loading method to determine the first surface stress state distribution of the part to be processed; constructing a standard prestressing loading model for a second prestressing loading simulation to determine the second surface stress state distribution of the part to be processed, and constructing a surface stress state model; conducting an actual prestressing loading experiment based on the preset prestressing loading method to determine the actual surface stress state distribution of the part to be processed; correcting the surface stress state model based on the actual surface stress state distribution, and using the corrected surface stress state model to determine the target prestressing loading method for the part to be processed. By employing the technical solution of this invention, the distribution of surface prestress under different preset prestressing loading methods is determined through simulation model technology, thereby determining the target prestressing loading method required for the part to be processed under different needs. This achieves precise control of the surface prestress of the part to be processed, improves the efficiency and accuracy of prestress application, and reduces production costs.

[0023] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 This is a flowchart of a method for determining the prestressing loading mode for shot peening according to Embodiment 1 of the present invention;

[0026] Figure 2This is a flowchart of a method for determining the prestressing loading mode for shot peening according to Embodiment 2 of the present invention;

[0027] Figure 3 This is a schematic diagram of the simulation results of a simplified prestressed loading model provided in Embodiment 2 of the present invention;

[0028] Figure 4 This is a schematic diagram of prestress loading for projectile impact provided in Embodiment 2 of the present invention;

[0029] Figure 5 This is a schematic diagram of a prestressed forming fixture loading according to Embodiment 2 of the present invention;

[0030] Figure 6 This is a schematic diagram of the simulation results of a prestressed loading standard model according to Embodiment 2 of the present invention;

[0031] Figure 7 This is a schematic diagram of the stress distribution under load of a prestressed forming fixture according to Embodiment 2 of the present invention;

[0032] Figure 8 This is a schematic diagram of the stress state distribution under prestressed loading for projectile impact provided in Embodiment 2 of the present invention;

[0033] Figure 9 This is a schematic diagram of a device for determining the prestress loading method of shot peening forming according to Embodiment 3 of the present invention;

[0034] Figure 10 This is a schematic diagram of the structure of an electronic device provided in Embodiment 4 of the present invention. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0036] The acquisition, storage, use, and processing of data in the technical solution of this application all comply with relevant laws and regulations. It should be noted that the terms "first," "second," "target," and "original," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising," "etc.," and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0037] Example 1

[0038] Figure 1 This invention provides a flowchart of a method for determining the prestress loading mode in shot peening forming, according to Embodiment 1. This embodiment is applicable to situations where the distribution of prestress on the surface of a workpiece under different preset prestress loading modes is determined using simulation modeling technology. This allows for the determination of the target prestress loading mode required for the workpiece under different needs, achieving precise control of the prestress on the surface of the workpiece and improving the efficiency and accuracy of prestress application. This method can be executed by a shot peening prestress loading mode determination device, which can be implemented in hardware and / or software. This device can be configured in any electronic device with network communication capabilities. Figure 1 As shown, the method includes:

[0039] S110. Construct a simplified prestressed loading model, and perform a first prestressed loading simulation on the simplified prestressed loading model based on a preset prestressed loading method to determine the distribution of the first surface stress state of the part to be processed.

[0040] The simplified prestressing loading model can refer to a prestressing loading model obtained by simplifying the geometry, material properties, or boundary conditions of the part to be processed. For example, chamfers and holes, which have little impact on the prestress distribution, are ignored, while the main structure of the part to be processed is retained. If the part to be processed is a cylinder with holes, it can be simplified to a cylinder model without holes, retaining only key geometric features such as length and diameter.

[0041] The preset prestress loading method refers to the prestress application method set in advance before simulation, which requires specifying the load type, magnitude, direction, and location of application. The preset prestress loading method includes, but is not limited to, the prestress forming fixture loading method, the projectile impact prestress loading method, and the projectile impact superimposed prestress forming fixture loading method.

[0042] The prestress loading simulation refers to a numerical simulation method that uses simulation software to simulate the prestress application process and calculate the internal stress distribution of the part to be processed. By performing the prestress loading simulation, the stress state distribution on the first surface of the part to be processed is determined.

[0043] It is understandable that the term "first prestressed loading simulation" can be used as a pronoun to distinguish between different prestressed loading simulations that execute corresponding logic in the embodiments. Therefore, the prestressed loading simulation that appears for the first time in this document is called the first prestressed loading simulation, and other prestressed loading simulations that appear later and are different from the first prestressed loading simulation are called the second prestressed loading simulation. This will not be elaborated further.

[0044] The parts to be processed can refer to parts that need to be formed into the required shape through prestress loading, including but not limited to aircraft wing panels.

[0045] The first surface stress state distribution refers to the distribution of surface stress state obtained on the part to be processed under the prestressing loading method, including stress magnitude, stress location, and stress distribution. Different prestressing loading methods will result in different first surface stress state distributions. Furthermore, since the constructed prestressing loading model is a simplified model, the first surface stress state distribution obtained is not the complete surface stress state distribution of the part to be processed; the first surface stress state distribution may be the outer surface stress state distribution of the part to be processed, excluding the internal stress state distribution.

[0046] S120. Construct a standard model for prestressed loading to simulate the second prestressed loading, determine the distribution of the second surface stress state of the part to be processed, and construct a surface stress state model.

[0047] The prestressing loading standard model can refer to a prestressing loading model obtained based on the geometry, material properties, or boundary conditions of the part to be processed. The prestressing loading standard model includes the internal geometry of the part to be processed.

[0048] The second surface stress state distribution refers to the distribution of surface stress state obtained on the part to be processed under the applied prestress loading method, including stress magnitude, stress location, and stress distribution. Different prestress loading methods applied to the part to be processed will result in different second surface stress state distributions. Since the constructed prestress loading model is a standard model, the obtained second surface stress state distribution represents the complete surface stress state distribution of the part to be processed, including the internal stress state distribution.

[0049] The surface stress state model can refer to a calculation model constructed using mathematical methods that can predict the stress value at any position on the surface of the part to be processed; the surface stress state model is used to characterize the different surface stress state distributions under different prestressing loading methods.

[0050] S130. Conduct an actual prestressing loading experiment based on the preset prestressing loading method to determine the actual surface stress distribution of the part to be processed.

[0051] Among them, the actual prestress loading experiment can refer to the experimental process of applying a preset prestress to the workpiece in a physical environment. The stress response after prestress loading can be directly obtained through sensors, which is a key link in verifying the accuracy of the simulation model.

[0052] The actual surface stress state distribution refers to the actual data of stress characteristics at various points on the surface of the part to be processed obtained by experimental measurement, including stress magnitude, direction, distribution law and dispersion, which is the real benchmark for verifying the simulation model.

[0053] S140. Based on the actual surface stress state distribution, the surface stress state model is modified, and the modified surface stress state model is used to determine the target prestress loading method of the part to be processed.

[0054] The correction of the surface stress state model refers to adjusting the model parameters based on the measured data of the actual surface stress of the part to be processed. For example, the boundary conditions, regression coefficients, and other model parameters of the surface stress state model are corrected to reduce the error between the model prediction results and the measured data to within a preset threshold.

[0055] Specifically, a modified surface stress state model is used to predict the target prestress loading method for the part to be processed. For example, the required surface stress state distribution of the part to be processed is determined, and the modified surface stress state model is used to predict the target prestress loading method based on the required surface stress state distribution.

[0056] This invention provides a method for determining the prestressing loading mode in shot peening. The method involves constructing a simplified prestressing loading model and performing a first prestressing loading simulation based on a preset prestressing loading mode to determine the first surface stress distribution of the part to be processed. A second prestressing loading simulation is then performed using a standard prestressing loading model to determine the second surface stress distribution of the part to be processed, and a surface stress state model is constructed. An actual prestressing loading experiment is then conducted based on the preset prestressing loading mode to determine the actual surface stress distribution of the part to be processed. The surface stress state model is then corrected based on the actual surface stress distribution, and the corrected surface stress state model is used to determine the target prestressing loading mode for the part to be processed. By employing the technical solution of this invention, the distribution of surface prestress under different preset prestressing loading modes is determined through simulation modeling technology. This allows for the determination of the target prestressing loading mode required for the part to be processed under different needs, achieving precise control of the surface prestress of the part to be processed, improving the efficiency and accuracy of prestress application, and reducing production costs.

[0057] Example 2

[0058] Figure 2 This is a flowchart of a method for determining the prestressing loading mode for shot peening forming according to Embodiment 2 of the present invention. This embodiment further optimizes the aforementioned embodiments, and can be combined with various optional solutions from one or more of the above embodiments. For example... Figure 2 As shown, the method includes:

[0059] S210. Construct a simplified prestressed loading model, and perform a first prestressed loading simulation on the simplified prestressed loading model based on a preset prestressed loading method to determine the distribution of the first surface stress state of the part to be processed.

[0060] In this embodiment of the invention, a simplified prestressing loading model is constructed, and a first prestressing loading simulation is performed based on different prestressing loading methods to determine the stress state distribution of the first surface. See also Figure 3 The stress distribution on the first surface determined by the simplified model of prestress loading can only determine the stress distribution on the outer surface of the part to be processed.

[0061] The prestressing loading methods include, but are not limited to, prestressing forming fixture loading methods, projectile impact prestressing loading methods, and projectile impact superimposed prestressing forming fixture loading methods. For example... Figure 4 The projectile impact prestressing method shown, and Figure 5 The prestressed forming fixture loading method is shown.

[0062] This invention proposes a novel prestressing loading method, which achieves prestressing loading through shot impact or superposition. Compared to loading using forming fixtures, this method can achieve a more complex stress distribution on the surface, thus providing strong support for subsequent shot peening. Under prestressing loading, the peened surface is subjected to shot impact under tensile stress. Compared to the free state, this tensile stress facilitates the elongation of the peened material and deepens the compressive stress layer, increasing the average value of residual compressive stress in the compressive stress layer, ensuring that the part to be processed can be shaped in the required direction. Secondly, traditional prestressing loading methods can only achieve surface tensile stress and cannot achieve the application of compressive stress. The shot impact prestressing loading method or the shot impact superposition prestressing forming fixture loading method can overcome the shortcomings of the traditional method, enabling the complex situation of the part extending in one direction and undergoing slight deformation in another direction, and better determining the critical state of large panels.

[0063] As an optional but non-limiting implementation, a simplified prestressed loading model is constructed, including but not limited to steps A1-A2:

[0064] Step A1: Based on the three-dimensional solid model of the part to be processed, determine the geometric features of the key stress areas of the part to be processed, and simplify the structural features of the non-stress areas.

[0065] Step A2: Based on the simplified three-dimensional solid model, construct a simplified prestressed loading model.

[0066] In this process, non-critical stress areas of the part to be processed are simplified, retaining only the geometric features of the critical stress areas to construct a simplified prestressing loading model. Simulation using this simplified prestressing loading model can preliminarily characterize the surface stress distribution of the part to be processed, simplifying the simulation process and allowing for faster determination of the surface stress distribution under different prestressing loading methods.

[0067] As an optional but non-limiting implementation, the prestressed loading simplified model also includes an elastic constraint unit, which is set between the loading end and the part to be processed. The elastic constraint unit simulates the flexible deformation of the boundary conditions during the actual shot peening process by setting elastic parameters. The loading end refers to the force application device, and the elastic parameters include stiffness coefficient and damping coefficient.

[0068] Shot peening is essentially a process of plastic deformation of the material surface caused by high-speed shot impact. Traditional simulations typically set rigid constraints at the boundaries, neglecting the flexible deformation of tooling fixtures and support platforms. This leads to deviations in stress distribution calculations, especially in edge regions. The core value of elastic constraint units is their ability to reproduce the flexible contact relationship between the part and the tooling in actual machining, correct stress concentration errors under rigid constraints, and simulate the dynamic micro-deformation of the part during shot peening. Therefore, in this embodiment of the invention, the simplified prestress loading model also includes elastic constraint units. These units can simulate the flexible deformation of boundary conditions during actual shot peening by setting elastic parameters, avoiding the simplification of boundary conditions to ideal fixed or free constraints, thus improving the realism of the model. Secondly, the elastic constraint units can also absorb some energy, reducing stress concentration caused by rigid contact, and more accurately reflecting the prestress distribution of the part to be processed.

[0069] S220. Construct a standard model for prestressed loading to perform a second prestressed loading simulation, determine the distribution of the second surface stress state of the part to be processed, and construct a surface stress state model.

[0070] In this embodiment of the invention, a standard prestressing loading model is constructed, and a second prestressing loading simulation is performed based on different prestressing loading methods to determine the distribution of a second surface stress state that can characterize the complete geometry of the part to be processed. A surface stress state model is then constructed based on the second surface stress state distribution to map the prestressing loading method and the surface stress state distribution. See also... Figure 6 The stress state distribution on the second surface determined by the prestressed loading standard model can not only determine the stress state distribution on the outer surface of the part to be processed, but also the stress state distribution inside the part to be processed.

[0071] As an optional but non-limiting implementation, the construction of a prestressed loading standard model for second prestressed loading simulation determines the distribution of the second surface stress state of the part to be processed and constructs a surface stress state model, including but not limited to steps B1-B2:

[0072] Step B1: Construct a prestressed loading standard model, map the first surface stress state distribution as boundary conditions to the prestressed loading standard model, and perform a second prestressed loading simulation based on a preset prestressed loading method to determine the second surface stress state distribution of the part to be processed.

[0073] Step B2: Construct a surface stress state model based on the second surface stress state distribution; wherein, the surface stress state model is used to characterize the correspondence between the surface stress state distribution of the part and the prestress loading method.

[0074] Specifically, a standard prestressing loading model is constructed, and the first surface stress state distribution obtained using a simplified prestressing loading model is mapped to the standard prestressing loading model as boundary conditions. A second prestressing loading simulation is then performed to determine the second surface stress state distribution. Based on the second surface stress state distribution, a surface stress state model is constructed to characterize the correspondence between the surface stress state distribution of the part and the prestressing loading method.

[0075] Traditional prestressing methods rely heavily on experience and numerous experiments, resulting in time-consuming, labor-intensive, and inefficient work. In this invention, simulation can predict different prestressing conditions in advance, allowing for the selection of the optimal prestressing method before testing, thus improving work efficiency. Simulation can also effectively determine the critical state of prestressing in large wall panels, enabling better prediction and optimization of prestressing methods, achieving high-efficiency and precise loading.

[0076] S230. Conduct an actual prestressing loading experiment based on the preset prestressing loading method to determine the actual surface stress distribution of the part to be processed.

[0077] This involves conducting actual prestressing loading experiments based on a preset prestressing loading method to determine the actual surface stress distribution of the parts to be processed. For example, taking an actual prestressing loading experiment on a slab as an example, see [link to relevant documentation]. Figure 7 An actual prestressing loading test was conducted on the slab using projectile impact prestressing to obtain the actual surface stress distribution of the slab. (See also...) Figure 8 The method involves conducting actual prestressing loading tests on slabs using prestressing forming fixtures to obtain the actual surface stress distribution of the slabs. It also includes conducting actual prestressing loading tests on slabs using a projectile impact superimposed on the prestressing forming fixture loading method to obtain the actual surface stress distribution of the slabs.

[0078] S240. Based on the actual surface stress state distribution, the surface stress state model is modified, and the modified surface stress state model is used to determine the target prestress loading method of the part to be processed.

[0079] In this process, after determining the actual surface stress distribution of the parts to be processed through actual prestressing loading experiments, the constructed surface prestressing state model is modified, and the target prestressing loading method of the parts to be processed is determined using the modified surface stressing state model.

[0080] As an optional but non-limiting implementation, the surface stress state model is modified based on the actual surface stress state distribution, and the target prestress loading method for the part to be processed is determined using the modified surface stress state model, including but not limited to steps C1-C2:

[0081] Step C1: Using the actual surface stress state distribution, modify the surface stress state model and determine the modified target surface stress state model.

[0082] Step C2: Using the target surface stress state model, determine the target prestress loading method for the part to be processed based on the actual requirements of the part to be processed.

[0083] In this process, after determining the actual surface stress distribution of the part to be processed through actual prestressing loading experiments, the surface stress state model is modified, and a modified target surface stress state model is determined. Using the target surface stress state model, the target prestressing loading method for the part to be processed is determined based on its actual requirements.

[0084] In this embodiment of the invention, the surface stress state model is modified by using the actual surface stress state distribution, so as to determine the target prestress loading method for parts with different thicknesses and shapes.

[0085] In this embodiment of the invention, by using a projectile-impact prestressing loading method and a projectile-impact superimposed prestressing forming tooling loading method, it is possible to realize the complex situation of a part extending in one direction and undergoing slight deformation in another direction, thereby providing strong support for subsequent shot peening forming. By using simulation model technology to determine the state distribution of prestress on the surface of the part to be processed under different preset prestress loading methods, the target prestress loading method required for the part to be processed under different requirements can be determined. This can effectively determine the critical state of prestress in large wall panels, so as to achieve precise control of the prestress on the surface of the part to be processed, improve the efficiency and accuracy of prestress application, and reduce production costs.

[0086] Example 3

[0087] Figure 9 This is a schematic diagram of a device for determining the prestressing loading method for shot peening forming, provided in Embodiment 3 of the present invention. Figure 9 As shown, the device includes:

[0088] The simplified model first simulation module 910 is used to construct a simplified prestressed loading model and perform a first prestressed loading simulation on the simplified prestressed loading model based on a preset prestressed loading method to determine the distribution of the first surface stress state of the part to be processed.

[0089] The standard model second simulation module 920 is used to construct a prestressed loading standard model to perform a second prestressed loading simulation, determine the distribution of the second surface stress state of the part to be processed, and construct a surface stress state model.

[0090] The actual prestress loading experiment module 930 is used to conduct actual prestress loading experiments based on a preset prestress loading method to determine the actual surface stress state distribution of the part to be processed.

[0091] The prestress loading method determination module 940 is used to correct the surface stress state model based on the actual surface stress state distribution, and to determine the target prestress loading method of the part to be processed using the corrected surface stress state model.

[0092] Optionally, a simplified model of prestressed loading is constructed, including:

[0093] Based on the three-dimensional solid model of the part to be processed, the geometric features of the key stress areas of the part to be processed are determined, and the structural features of the non-stress areas are simplified.

[0094] Based on the simplified three-dimensional solid model, a simplified model of prestressed loading is constructed.

[0095] Optionally, the simplified prestressed loading model further includes an elastic constraint unit, which is disposed between the loading end and the part to be processed. The elastic constraint unit simulates the flexible deformation of the boundary conditions during the actual shot peening process by setting elastic parameters. The loading end refers to the force application device, and the elastic parameters include stiffness coefficient and damping coefficient.

[0096] Optionally, the preset prestress loading method includes prestress forming fixture loading method, projectile impact prestress loading method, and projectile impact superimposed prestress forming fixture loading method.

[0097] Optional, the second simulation module of the standard model, specifically used for:

[0098] A prestress loading standard model is constructed, and the distribution of the first surface stress state is mapped to the prestress loading standard model as a boundary condition. A second prestress loading simulation is performed based on a preset prestress loading method to determine the distribution of the second surface stress state of the part to be processed.

[0099] A surface stress state model is constructed based on the second surface stress state distribution; wherein, the surface stress state model is used to characterize the correspondence between the surface stress state distribution of the part and the prestress loading method.

[0100] Optional, a prestressing loading method determination module, specifically used for:

[0101] The surface stress state model is modified based on the actual surface stress state distribution, and the modified target surface stress state model is determined.

[0102] Using the target surface stress state model, the target prestress loading method of the part to be processed is determined according to the actual needs of the part to be processed.

[0103] The shot peening prestress loading method determination device provided in the embodiments of the present invention can execute the shot peening prestress loading method determination method provided in any of the embodiments of the present invention, and has the corresponding functions and beneficial effects of executing the shot peening prestress loading method determination method. For detailed process, please refer to the relevant operations of the shot peening prestress loading method determination method in the foregoing embodiments.

[0104] Example 4

[0105] Figure 10 A schematic diagram of an electronic device 10, which can be used to implement embodiments of the present invention, is shown. The electronic device is intended to represent various forms of digital computers, such as 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 personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0106] like Figure 10 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 can also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0107] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0108] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the method for determining the prestressing loading mode in shot peening forming.

[0109] In particular, according to embodiments of the present invention, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present invention include a computer program product comprising a computer program carried on a non-transitory computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication unit 19, or installed from storage unit 18, or installed from ROM 12. When the computer program is executed by processor 11, it performs the functions defined in the methods of the embodiments of the present invention.

[0110] In some embodiments, the shot peening prestressing loading mode determination method can be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the shot peening prestressing loading mode determination method described above can be performed. Alternatively, in other embodiments, processor 11 can be configured to perform the shot peening prestressing loading mode determination method by any other suitable means (e.g., by means of firmware).

[0111] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), system-on-a-chip (SoCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transferring data and instructions to the storage system, the at least one input device, and the at least one output device.

[0112] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0113] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0114] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0115] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0116] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0117] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0118] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for determining a shot peening forming prestress loading mode, characterized in that, The method comprises: constructing a prestress loading simplified model, and performing first prestress loading simulation on the prestress loading simplified model based on a preset prestress loading mode to determine a first surface stress state distribution of the part to be processed; constructing a prestress loading standard model to perform second prestress loading simulation, determine a second surface stress state distribution of the part to be processed, and construct a surface stress state model; performing actual prestress loading experiment based on the preset prestress loading mode to determine an actual surface stress state distribution of the part to be processed; correcting the surface stress state model according to the actual surface stress state distribution, and determining a target prestress loading mode of the part to be processed by using the corrected surface stress state model.

2. The method of claim 1, wherein, The construction of the prestress loading simplified model comprises: determining the geometric features of the key stress area of the part to be processed according to a three-dimensional entity model of the part to be processed, and simplifying the structural features of the non-stress area; constructing the prestress loading simplified model according to the simplified three-dimensional entity model.

3. The method of claim 1, wherein, The prestress loading simplified model further comprises an elastic constraint unit arranged between a loading end and the part to be processed, which simulates the flexible deformation of the boundary condition in the actual shot forming process by setting an elastic parameter; wherein the loading end refers to a force applying device, and the elastic parameter comprises a stiffness coefficient and a damping coefficient.

4. The method of claim 1, wherein, The preset prestress loading mode comprises a prestress forming tool loading mode, a shot impact prestress loading mode, and a shot impact superimposed prestress forming tool loading mode.

5. The method of claim 1, wherein, The construction of the prestress loading standard model to perform second prestress loading simulation, determine a second surface stress state distribution of the part to be processed, and construct a surface stress state model comprises: constructing a prestress loading standard model, mapping the first surface stress state distribution as a boundary condition to the prestress loading standard model, and performing second prestress loading simulation based on a preset prestress loading mode to determine a second surface stress state distribution of the part to be processed; constructing a surface stress state model according to the second surface stress state distribution; wherein the surface stress state model is used to represent the corresponding relationship between the surface stress state distribution of the part and the prestress loading mode.

6. The method of claim 1, wherein, The correction of the surface stress state model according to the actual surface stress state distribution, and the determination of a target prestress loading mode of the part to be processed by using the corrected surface stress state model comprise: correcting the surface stress state model by using the actual surface stress state distribution, and determining a target surface stress state model after correction; determining a target prestress loading mode of the part to be processed according to the actual requirements of the part to be processed by using the target surface stress state model.

7. A device for determining a shot forming prestress loading mode, characterized by The device comprises: a simplified model first simulation module for constructing a prestress loading simplified model, and performing first prestress loading simulation on the prestress loading simplified model based on a preset prestress loading mode to determine a first surface stress state distribution of the part to be processed; The standard model second simulation module is configured to construct a standard model of prestress loading, perform a second prestress loading simulation, determine a second surface stress state distribution of the part to be processed, and construct a surface stress state model; The actual prestress loading experiment module is configured to perform an actual prestress loading experiment based on a preset prestress loading mode, and determine an actual surface stress state distribution of the part to be processed; The prestress loading mode determination module is configured to correct the surface stress state model according to the actual surface stress state distribution, and determine a target prestress loading mode of the part to be processed by using the corrected surface stress state model.

8. An electronic device, comprising: The electronic device includes: at least one processor; and a memory connected to the at least one processor in communication; wherein The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the shot forming prestress loading mode determination method of any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions for enabling the processor to execute the shot forming prestress loading mode determination method of any one of claims 1-6 when executed.

10. A computer program product, characterised in that, The computer program product includes a computer program that, when executed by a processor, implements the shot forming prestress loading mode determination method according to any one of claims 1-6.

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