Material constitutive real-time optimization method based on target strike response

Abstract

The invention relates to the crossing field of material mechanics and weapon science and technology, and discloses a material constitutive real-time optimization method based on target material impact response. The method comprises the following steps: acquiring key physical parameters of an impact carrier and a target material, executing target material impact operation, and capturing microscopic elastic deformation of the impact carrier, a friction state of an impact interface and surface plastic flow data of the target material in real time; the microscopic elastic deformation quantity of the impact carrier, the friction action coefficient of a hit interface and the plastic flow cumulant of the surface layer of the target material are obtained through dynamic coupling calculation, the stress wave propagation state and the hit contact pressure of the impact carrier are regulated in a linkage mode, and closed-loop optimization is formed; according to the technical scheme, the problems that in the prior art, material constitutive adaptation precision is low, and dynamic response lags are solved, safe and effective consideration of target material hit mechanical properties is achieved, and the method is suitable for material constitutive optimization and intelligent adaptation scenes in target material hit scenes.

Description

Technical Field

[0001] This invention relates to the interdisciplinary field of materials mechanics and weapon science and technology, specifically to a real-time material constitutive optimization method based on the impact response of a target. Background Technology

[0002] In the scenario of controlling the mechanical properties of targets under impact, the core requirement is to ensure that the target's impact response accurately matches the preset mechanical performance target by optimizing the dynamic adaptation of the material constitutive parameters during the impact process. This avoids deviations in impact effect caused by constitutive parameter mismatch, while ensuring the stability of the material constitutive adaptation to achieve continuous and effective mechanical performance output. Existing technologies for optimizing the material constitutive structure under target impact mainly focus on adjusting macroscopic parameters such as target thickness, impact velocity, and carrier hardness, without deeply considering the dynamic coupling effect between the microscopic response and material constitutive parameters during the target impact process.

[0003] During actual impact, the impactor undergoes micro-elastic deformation under impact stress. This deformation alters the adhesion state of the impact interface, thus affecting the efficiency of interfacial friction in regulating the material constitutive model. The frictional state of the impact interface dynamically changes with temperature and frictional force, directly determining the evolution direction of the material's constitutive parameters. The surface of the target material undergoes plastic flow under impact, and this flow is irreversible, leading to a gradual decrease in the material's constitutive fit accuracy and ultimately causing constitutive parameter drift. Current technologies lack precise capture of these micro-impact responses and a coordinated control mechanism for material constitutive parameters, resulting in low constitutive fit accuracy and delayed dynamic response, failing to meet the core requirement of both safe and effective impact testing of the target material.

[0004] Based on the above problems, there is an urgent need for a technical solution that can couple and control the microscopic impact response of the target material with the material constitutive parameters, and solve the problems of low constitutive fitting accuracy and fast drift. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a real-time material constitutive optimization method based on the impact response of a target material. The specific technical solution is as follows: Preferably, the process involves acquiring key physical parameters such as the yield strength, elastic modulus, and density of the target material, and the elastic modulus, Poisson's ratio, and density of the impact carrier, and performing the target impact operation. This also includes real-time capture of micro-elastic deformation data of the impact carrier, frictional state data at the impact interface, and plastic flow data of the target surface. Based on the micro-elastic deformation data of the impact carrier and the real-time impact stress during the impact process, the micro-elastic deformation of the impact carrier is calculated. Finally, combining the micro-elastic deformation of the impact carrier, the frictional state data at the impact interface, and the impact time, the frictional coefficient at the impact interface is calculated. Based on the friction coefficient of the impact interface, the micro-elastic deformation of the impact carrier, and the plastic flow data of the target surface, the cumulative amount of plastic flow on the target surface is calculated. The stress wave propagation state of the impact carrier is adjusted according to the micro-elastic deformation of the impact carrier to optimize the constitutive stress response characteristics of the material. The impact contact pressure is adjusted according to the cumulative amount of plastic flow on the target surface to compensate for the constitutive parameter drift caused by the plastic flow of the target. Through multi-parameter linkage, a closed-loop optimization of the target impact response and material constitutive parameters is formed to achieve real-time accurate adaptation and stable output of the material constitutive structure.

[0006] Preferably, real-time capture of the micro-elastic deformation data of the impact carrier is achieved through an impact carrier micro-deformation monitoring module. This module includes a laser interferometer and a high-speed data acquisition unit. The laser interferometer is electrically connected to the high-speed data acquisition unit. The laser interferometer emits a coherent laser beam onto the surface of the impact carrier, receives the reflected laser beam, and converts it into the original micro-deformation signal. The high-speed data acquisition unit receives the original micro-deformation signal and performs analog-to-digital conversion to obtain the micro-elastic deformation data of the impact carrier. The impact carrier micro-elastic deformation monitoring module transmits the impact carrier micro-elastic deformation data to the central control module. The central control module receives and processes the impact carrier micro-elastic deformation data, providing basic data for subsequent calculation of material constitutive correlation parameters.

[0007] Preferably, real-time capture of the friction state data of the impacted interface is achieved through an impacted interface friction state monitoring module. The impacted interface friction state monitoring module includes an infrared temperature sensor and a friction force sensor. The infrared temperature sensor is electrically connected to the central control module, and the friction force sensor is also electrically connected to the central control module. The infrared temperature sensor detects the real-time temperature data of the impacted interface, and the friction force sensor detects the real-time friction force data of the impacted interface. The temperature data and friction force data together constitute the impacted interface friction state data. The impacted interface friction state monitoring module transmits the impacted interface friction state data to the central control module in real time. The central control module preprocesses the friction state data to remove interference signals.

[0008] Preferably, real-time capture of plastic flow data on the target surface is achieved through a target plastic flow monitoring module. The target plastic flow monitoring module includes an ultrasonic array probe and a signal processor. The ultrasonic array probe is electrically connected to the signal processor, and the signal processor is electrically connected to the central control module. The ultrasonic array probe emits ultrasonic signals to the target surface, receives the ultrasonic signals reflected by the target surface, and transmits them to the signal processor. The signal processor analyzes and processes the reflected ultrasonic signals, extracts the plastic flow characteristic parameters of the target surface, and forms the target surface plastic flow data. The plastic flow data is transmitted to the central control module for subsequent calculation of material constitutive correlation parameters.

[0009] Preferably, when calculating the microelastic deformation of the impact carrier based on the microelastic deformation data and the real-time impact stress during the impact process, the following formula is used: ; in, Let be the microelastic deformation of the impact carrier at time t, which is dimensionless. The initial microscopic deformation of the impact carrier is dimensionless. is the deformation attenuation coefficient, with dimensions 1 / (Pa·s); Let be the real-time impact stress at time t, with dimensions in Pascals; The time of impact is measured in seconds. The Poisson's ratio of the impact carrier is dimensionless. The elastic modulus of the impact carrier is expressed in Pascals. ω is the angular frequency of the deformation vibration, with dimensions in radians per second; is the stress-deformation coupling coefficient, with dimensions 1 / Pa; for The impact stress at time t is in Pascals. for The plastic strain rate of the carrier under constant impact, with dimensions 1 / second; It is the integral value of the product of the impact stress and the plastic strain rate from time 0 to time t, with dimensions 1 / second.

[0010] Preferably, when calculating the friction coefficient of the impact interface by combining the microelastic deformation of the impact carrier, the friction state data of the impact interface, and the impact time, the following formula is used: ; in, is the friction coefficient of the impact interface at time t, which is dimensionless; The initial friction coefficient of the impacted interface is dimensionless. Let be the microelastic deformation of the impact carrier at time t, which is dimensionless. Let be the real-time frictional force on the impacted interface at time t, with the dimension of Newton; The reference friction force at the impacted interface is expressed in Newtons. The friction-temperature coupling coefficient has dimensions of 1 / K. Let t be the real-time temperature of the impacted interface at time t, in Kelvin. This is a correction factor for friction, with dimensions in N·K; for The micro-elastic deformation of the carrier under constant impact has a dimensionless dimension. for The temperature of the constantly impacted interface, in Kelvin. for The frictional force on the constantly impacted interface, with the dimension of Newton; The integral value of the ratio of the microelastic deformation of the impact carrier, the interface temperature, and the frictional force from time 0 to time t is given in K / N.

[0011] Preferably, when calculating the cumulative amount of plastic flow on the surface of the target material based on the friction coefficient of the impact interface, the micro-elastic deformation of the impact carrier, and the plastic flow data of the target material surface, the following formula is used: ; in, denoted as the cumulative amount of plastic flow on the surface of the target material at time t, which is dimensionless. The initial plastic flow rate of the target material is dimensionless. is the friction coefficient of the impact interface at time t, which is dimensionless; Let be the microelastic deformation of the impact carrier at time t, which is dimensionless. is the critical friction coefficient, which is dimensionless; It is a critical deformation variable with dimensionless dimensions; This is the acceleration coefficient for plastic flow, and its dimensionless value. The time of impact is measured in seconds. The critical time for plastic flow is expressed in seconds. for The coefficient of friction at the constantly impacted interface, which is dimensionless; for The shear strain rate of the target surface at any given moment, with dimensions of 1 / second; It is the integral value of the product of the friction coefficient and the shear strain rate from time 0 to time t, with dimensions 1 / second.

[0012] Preferably, the central control module includes a microprocessor and a control algorithm. The microprocessor adopts an ARM Cortex-A9 architecture, and the control algorithm is stored in the flash memory unit of the microprocessor. The high-speed data acquisition unit transmits the micro-elastic deformation data of the impact carrier to the microprocessor via the SPI bus. The microprocessor calls the control algorithm to synchronously process the micro-elastic deformation data of the impact carrier, the friction state data of the impact interface, and the plastic flow data of the target material surface, generating stress wave control signals and impact pressure adjustment signals. The stress wave control signal is transmitted to the stress wave control module, and the impact pressure adjustment signal is transmitted to the impact pressure adjustment module.

[0013] Preferably, the stress wave control module includes a piezoelectric transducer array and a signal generator. The piezoelectric transducer array is electrically connected to the signal generator, and the signal generator is electrically connected to the central control module. The central control module transmits the stress wave control signal to the signal generator. The signal generator generates an adaptive drive signal based on the stress wave control signal and transmits it to the piezoelectric transducer array. The piezoelectric transducer array adjusts the vibration frequency and phase based on the adaptive drive signal, thereby changing the propagation characteristics of the stress wave inside the impact carrier, optimizing the material constitutive stress response, and improving the material constitutive adaptation accuracy.

[0014] Preferably, the impact pressure adjustment module includes an electro-hydraulic servo valve and a pressure actuator. The electro-hydraulic servo valve is electrically connected to the pressure actuator and to the central control module. The central control module calculates the pressure adjustment amount based on the cumulative amount of plastic flow on the surface of the target material, generates an impact pressure adjustment signal, and transmits it to the electro-hydraulic servo valve. The electro-hydraulic servo valve controls the flow and pressure of hydraulic oil based on the impact pressure adjustment signal, drives the pressure actuator to change the impact contact pressure, compensates for the constitutive parameter drift caused by the plastic flow of the target material, and maintains the stability of the material constitutive fit.

[0015] The technical effects of the above embodiments include: The core inventive technology of this invention lies in constructing a coupled closed-loop control system that integrates the microscopic elastic deformation of the impact carrier, the frictional action at the impact interface, the plastic flow of the target material surface, and the material constitutive parameters. A dedicated monitoring module precisely captures the microscopic impact response data of the target material, and a progressive correlation formula is designed to quantify the material constitutive correlation parameters, thereby controlling the stress wave propagation and impact contact pressure in a coordinated manner. This technical solution specifically addresses the problems of low constitutive fitting accuracy, lag in dynamic response, and difficulty in balancing safety and effectiveness caused by the failure of existing technologies to consider the coupling between the target material's microscopic impact response and its constitutive properties. It achieves a significant improvement and stable maintenance of the material constitutive fitting accuracy, providing a novel technical path for controlling the impact mechanical properties of targets. Attached Figure Description

[0016] Figure 1 This is a flowchart of the real-time material constitutive optimization method based on the target impact response of this application. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0018] Traditional technical solutions have the following technical problems: Existing constitutive optimization of target impact materials only focuses on adjusting macroscopic parameters, without considering the dynamic correlation between the microscopic elastic deformation of the impact carrier, the friction of the impact interface, and the plastic flow of the target surface. This results in low constitutive fitting accuracy and rapid drift during the impact process, making it impossible to achieve safe and effective target impact control.

[0019] Based on this, please refer to Figure 1 This embodiment provides a real-time material constitutive optimization method based on the impact response of a target, including: S1: Obtain key physical parameters such as the yield strength, elastic modulus, and density of the target material, as well as the elastic modulus, Poisson's ratio, and density of the impact carrier (such as a kinetic energy projectile), and perform the target impact operation. Also includes: S2: Real-time capture of micro-elastic deformation data of impact carrier, friction state data of impact interface, and plastic flow data of target surface (collectively referred to as target impact response data). S3: Calculate the microelastic deformation of the impact carrier based on the microelastic deformation data of the impact carrier and the real-time impact stress during the impact process; S4: Calculate the friction coefficient of the impact interface by combining the micro-elastic deformation of the impact carrier, the friction state data of the impact interface, and the impact time. S5: Based on the friction coefficient of the impact interface, the micro-elastic deformation of the impact carrier, and the plastic flow data of the target material surface, calculate the cumulative amount of plastic flow on the target material surface (collectively referred to as material constitutive correlation parameters). S6: Adjust the stress wave propagation state of the impact carrier according to the micro-elastic deformation of the impact carrier to optimize the constitutive stress response characteristics of the material; S7: Adjust the impact contact pressure according to the cumulative amount of plastic flow on the surface of the target material to compensate for the constitutive parameter drift caused by the plastic flow of the target material. Through multi-parameter linkage, a closed-loop optimization of the target material impact response and material constitutive parameters is formed to achieve real-time accurate adaptation and stable output of material constitutive parameters.

[0020] This scheme first acquires the core physical parameters of the impact carrier and the target material through a parameter acquisition unit, providing a foundation for subsequent calculations. During the impact process, three dedicated monitoring modules simultaneously capture dynamic data (target impact response data) of the micro-elastic deformation of the impact carrier, the friction state of the impact interface, and the plastic flow on the surface of the target material. After receiving the data, the central control module calculates the micro-elastic deformation of the impact carrier, the friction coefficient of the impact interface, and the cumulative amount of plastic flow on the surface of the target material (material constitutive parameters) sequentially using a progressive formula. Based on the deformation, stress wave propagation is controlled to optimize the material constitutive stress response; based on the cumulative amount of plastic flow, the impact contact pressure is adjusted to compensate for constitutive parameter drift. Finally, a closed loop is formed through multi-parameter linkage to ensure accurate and stable material constitutive adaptation. The technical effects achieved by this scheme include achieving precise coupling control of the target material's micro-impact response and material constitutive structure, significantly improving constitutive adaptation accuracy, effectively suppressing parameter drift, and balancing the safety and effectiveness of the target material during impact.

[0021] Traditional technical solutions suffer from the following technical problems: lack of dedicated hardware architecture for monitoring the micro-elastic deformation of impact carriers, low data acquisition accuracy and high latency, which cannot provide reliable basic data for subsequent material constitutive optimization.

[0022] Based on this, real-time capture of the micro-elastic deformation data of the impact carrier is achieved through the impact carrier micro-deformation monitoring module. The impact carrier micro-deformation monitoring module includes a laser interferometer and a high-speed data acquisition unit. The laser interferometer is electrically connected to the high-speed data acquisition unit. The laser interferometer emits a coherent laser beam onto the surface of the impact carrier, receives the reflected laser beam and converts it into the original micro-deformation signal. The high-speed data acquisition unit receives the original micro-deformation signal and performs analog-to-digital conversion to obtain the micro-elastic deformation data of the impact carrier. The impact carrier micro-elastic deformation monitoring module transmits the impact carrier micro-elastic deformation data to the central control module. The central control module receives and processes the impact carrier micro-elastic deformation data, providing basic data for subsequent calculation of material constitutive correlation parameters.

[0023] The impact carrier micro-deformation monitoring module consists of a laser interferometer and a high-speed data acquisition unit, which are electrically connected via a shielded cable to ensure interference-free signal transmission. The laser interferometer employs the principle of heterodyne interference, focusing a coherent laser beam onto a preset monitoring point on the impact carrier surface. After reflection from the impact carrier surface, the laser beam produces interference fringes with a reference beam. The shift of these interference fringes is proportional to the micro-deformation of the impact carrier. The laser interferometer converts the interference fringes signal into an analog form of the original micro-deformation signal.

[0024] The high-speed data acquisition unit, with a sampling rate set to 2GHz, can receive raw signals in real time and activate its built-in 16-bit analog-to-digital converter to convert analog signals into digital data of the impact carrier's microelastic deformation. Data transmission employs DMA (Direct Memory Access) to directly transmit the impact carrier's microelastic deformation data to the central control module's buffer unit, with transmission latency controlled at the microsecond level. The central control module performs filtering preprocessing on the received data to remove high-frequency noise interference, obtaining clean impact carrier microelastic deformation data, providing accurate input for subsequent calculations of the impact carrier's microelastic deformation. The technical effects achieved by this solution include establishing a dedicated impact carrier micro-deformation monitoring link, improving data acquisition accuracy and real-time performance, providing reliable basic data support for subsequent material constitutive optimization, and ensuring the overall optimization effect of the solution.

[0025] Traditional technical solutions have the following technical problems: they lack comprehensive means of capturing the friction state of the impact interface, and cannot obtain dynamic data on temperature and friction, resulting in a lack of basis for analyzing the control of material constitutive properties by friction.

[0026] Based on this, real-time capture of the friction state data of the impacted interface is achieved through the impacted interface friction state monitoring module. The impacted interface friction state monitoring module includes an infrared temperature sensor and a friction force sensor. The infrared temperature sensor is electrically connected to the central control module, and the friction force sensor is also electrically connected to the central control module. The infrared temperature sensor detects the real-time temperature data of the impacted interface, and the friction force sensor detects the real-time friction force data of the impacted interface. The temperature data and friction force data together constitute the impacted interface friction state data. The impacted interface friction state monitoring module transmits the impacted interface friction state data to the central control module in real time. The central control module preprocesses the friction state data to remove interference signals.

[0027] The impact interface friction state monitoring module comprises two core components: an infrared temperature sensor and a friction force sensor, both of which communicate with the central control module via an industrial bus. The infrared temperature sensor employs short-wave infrared detection technology and is installed at a predetermined position on the side of the impact interface. Its detection field is focused on the impact contact area, capable of penetrating interface dust interference to detect temperature changes at the impact interface in real time. The output temperature data is in digital signal form, and the sampling interval is synchronized with the impact process.

[0028] The friction sensor employs the piezoelectric sensing principle and is integrated into the impact-bearing end face of the impact carrier. The sensor's sensing surface is in direct contact with the target material. When interfacial friction occurs during impact, the frictional force acts on the sensing surface, generating piezoelectric charges. The charge signal is converted into a voltage signal proportional to the frictional force by a built-in amplification circuit, and then converted from analog to digital to obtain real-time frictional force data. Temperature data and frictional force data together constitute the impact interface friction state data, which is transmitted in real-time to the central control module via an industrial bus. The central control module performs outlier removal and smoothing processing on the received friction state data, eliminating transient interference signals in the initial impact stage to ensure data accuracy.

[0029] The technical effects achieved by this solution include comprehensive and real-time capture of the friction state of the impact interface, acquisition of dynamic data on temperature and friction, providing a complete basis for the calculation of the friction coefficient, and supporting the precise control of the material constitutive structure by friction.

[0030] Traditional technical solutions have the following technical problems: they lack effective means of monitoring plastic flow on the surface of the target material, and cannot obtain dynamic characteristic parameters of plastic flow, resulting in a lack of accurate triggering basis for material constitutive parameter drift compensation.

[0031] Based on this, real-time capture of plastic flow data on the target surface is achieved through a target plastic flow monitoring module. The target plastic flow monitoring module includes an ultrasonic array probe and a signal processor. The ultrasonic array probe is electrically connected to the signal processor, and the signal processor is electrically connected to the central control module. The ultrasonic array probe emits ultrasonic signals to the target surface, receives the ultrasonic signals reflected by the target surface, and transmits them to the signal processor. The signal processor analyzes and processes the reflected ultrasonic signals, extracts the plastic flow characteristic parameters of the target surface, and forms the target surface plastic flow data. The plastic flow data is transmitted to the central control module for subsequent calculation of material constitutive correlation parameters.

[0032] The target plastic flow monitoring module consists of an ultrasonic array probe and a signal processor, which are electrically connected via a coaxial cable. The ultrasonic array probe contains 32 independent ultrasonic transducer units arranged in a ring and installed on the non-impact surface of the target. It emits ultrasonic signals at a frequency of 20MHz, capable of penetrating a certain depth through the target surface to reach the region where plastic flow occurs. When plastic flow occurs on the target surface, its internal microstructure changes, leading to alterations in the propagation speed, reflection amplitude, and phase of the ultrasonic waves. The ultrasonic array probe receives the ultrasonic signals reflected from the target surface and transmits them to the signal processor.

[0033] The signal processor incorporates an ultrasonic signal analysis algorithm to perform spectral analysis, amplitude extraction, and phase calculation on the reflected signal. This extracts characteristic parameters representing the degree of plastic flow, including the change in ultrasonic wave propagation time and the attenuation rate of the reflected amplitude. These parameters collectively constitute the plastic flow data of the target material surface. The signal processor transmits the plastic flow data to the central control module via a high-speed serial interface, providing data support for calculating the cumulative amount of plastic flow on the target material surface.

[0034] The technical effects achieved by this solution include the accurate monitoring of plastic flow on the surface of the target material, the acquisition of key characteristic parameters, the provision of accurate triggering basis for material constitutive parameter drift compensation, and the improvement of the timeliness and accuracy of compensation.

[0035] Traditional technical solutions have the following technical problems: there is no effective model for quantifying the micro-elastic deformation of the impact carrier, which cannot accurately describe the dynamic relationship between impact stress and micro-deformation, resulting in a lack of clear objectives for controlling the constitutive stress response of the material.

[0036] Based on this, the following formula is used to calculate the microelastic deformation of the impact carrier using the microelastic deformation data and the real-time impact stress during the impact process: ; in, Let be the microelastic deformation of the impact carrier at time t, which is dimensionless. The initial microscopic deformation of the impact carrier is dimensionless. is the deformation attenuation coefficient, with dimensions 1 / (Pa·s); Let be the real-time impact stress at time t, with dimensions in Pascals; The time of impact is measured in seconds. The Poisson's ratio of the impact carrier is dimensionless. The elastic modulus of the impact carrier is expressed in Pascals. ω is the angular frequency of the deformation vibration, with dimensions in radians per second; is the stress-deformation coupling coefficient, with dimensions 1 / Pa; for The impact stress at time t is in Pascals. for The plastic strain rate of the carrier under constant impact, with dimensions 1 / second; It is the integral value of the product of the impact stress and the plastic strain rate from time 0 to time t, with dimensions 1 / second.

[0037] This formula is the core model for quantifying the dynamic changes of microscopic elastic deformation of the impact carrier during the impact process of the target material. Its design logic closely follows the physical response law of the impact carrier during the impact process. Through three progressive expressions, it comprehensively covers the three key influencing mechanisms of initial impact attenuation, dynamic vibration and stress-plastic strain coupling, providing accurate quantitative basis for subsequent control of material constitutive stress response.

[0038] First item This study focuses on the microscopic deformation attenuation process in the initial stage of impact. Upon impact, the surface of the impact carrier rapidly contacts the target material, and the impact stress is instantaneously applied to the impact carrier, causing rapid compression of the initial microscopic gaps, resulting in attenuation of deformation. An exponential function is used to construct this process because the actual deformation attenuation rate under impact is not nonlinear, but gradually decreases with increasing impact stress and time. The greater the impact stress, the more concentrated the intermolecular forces of the impact carrier material, and the faster the deformation compression space decreases; the longer the time, the higher the adhesion between the impact carrier and the target material, and the attenuation amplitude gradually converges. The exponential form can accurately characterize this nonlinear attenuation law. The attenuation coefficient... The introduction of this method is to adapt to the mechanical properties of different impact carrier materials. Impact carriers with different densities and elastic moduli exhibit different deformation decay rates under the same impact stress. The formula can be calibrated through preliminary material mechanics experiments to ensure its applicability to different types of impact carriers.

[0039] Second item This describes the dynamic vibration characteristics of microscopic deformation during impact. The impact is not a static contact but rather accompanied by high-frequency vibrations, originating from the elastic rebound of the impactor and the target material. The Poisson's ratio of the impactor... The ratio of lateral deformation to longitudinal deformation of a material, and the impact stress. Provides the driving force for vibration, and the elastic modulus of the impact carrier. This determines the impact carrier's ability to resist deformation; the ratio of these three factors quantifies the instantaneous change in the microscopic deformation of the impact carrier under unit stress. (Cosine function) Corresponding to the periodicity of the vibration, the angular frequency of the vibration Determined by the medium properties of the impact interface and the natural frequency of the impact carrier, the initial vibration data can be obtained by fitting the data. This design effectively avoids the error caused by describing deformation using only static values ​​and ensures the capture of dynamic fluctuations in deformation during the impact process.

[0040] Third item This reflects the coupled cumulative effect of impact stress and the plastic strain rate of the impactor. During impact, the impactor undergoes not only elastic deformation but also minute plastic deformation. Furthermore, the effect of this plastic deformation on the elastic deformation is cumulative and cannot be accurately described by instantaneous values. (Integral term) It accumulates the product of impact stress and plastic strain rate from time 0 to time t, comprehensively reflecting the superposition effect of plastic deformation on elastic deformation under historical stress—as the impact stress continues to increase, the plastic strain rate rises, the integral value increases accordingly, and the correction range of elastic deformation also increases accordingly. Stress-deformation coupling coefficient. It is used to correct the strength differences in the coupling effect of stress and plastic strain rate in different materials, and to ensure the physical rationality of the calculation results of the formula.

[0041] The three terms of the formula complement each other and progress step by step. They cover the initial attenuation process after impact, capture the dynamic vibration characteristics, and take into account the cumulative effect of plastic strain, thus fully replicating the physical essence of the microscopic elastic deformation of the impact carrier.

[0042] Traditional technical solutions have the following technical problems: the friction coefficient calculation method without coupling multiple factors cannot accurately quantify the intensity of the influence of friction on the material constitutive structure at the impact interface, resulting in a lack of targeted material constitutive optimization.

[0043] Based on this, the following formula is used to calculate the friction coefficient at the impact interface by combining the microelastic deformation of the impact carrier, the friction state data of the impact interface, and the impact time: ; in, is the friction coefficient of the impact interface at time t, which is dimensionless; The initial friction coefficient of the impacted interface is dimensionless. Let be the microelastic deformation of the impact carrier at time t, which is dimensionless. Let be the real-time frictional force on the impacted interface at time t, with the dimension of Newton; The reference friction force at the impacted interface is expressed in Newtons. The friction-temperature coupling coefficient has dimensions of 1 / K. Let t be the real-time temperature of the impacted interface at time t, in Kelvin. This is a correction factor for friction, with dimensions in N·K; for The micro-elastic deformation of the carrier under constant impact has a dimensionless dimension. for The temperature of the constantly impacted interface, in Kelvin. for The frictional force on the constantly impacted interface, with the dimension of Newton; The integral value of the ratio of the microelastic deformation of the impact carrier, the interface temperature, and the frictional force from time 0 to time t is given in K / N.

[0044] This formula is a quantitative model of frictional action that couples multiple factors such as microscopic deformation of the impact carrier, interfacial friction, temperature and time. It breaks through the limitations of traditional single-factor description of friction coefficient. By combining nonlinear functions and integral terms, it accurately describes the dynamic change law of frictional action at the impact interface, providing core parameters for subsequent calculation of the cumulative amount of plastic flow of the target material.

[0045] First item It is the core component of the friction coefficient, based on the initial friction coefficient. Based on this, the coupled effects of micro-deformation of the impact carrier, friction, and temperature are superimposed. Micro-elastic deformation of the impact carrier. The actual contact area of ​​the impact interface is directly affected—the greater the deformation, the higher the adhesion between the impact carrier and the target material, the larger the contact area, and the stronger the friction. Therefore, it is related to real-time friction force. Multiplication, quantifying the synergistic effect of contact state and friction force, reference friction force This is used for normalization to ensure that the term is a dimensionless parameter. Temperature The effect of temperature on the friction coefficient exhibits a nonlinear characteristic. As temperature increases, the viscosity of the interfacial medium decreases, and the friction coefficient initially decreases slightly before rapidly increasing, according to the tangent function. It can accurately capture this nonlinear change, friction-temperature coupling coefficient The accuracy of quantifying the effect of temperature can be ensured through friction experiments at different temperatures. This overall design reflects the synergistic mechanism of contact state, friction force, and temperature, which is consistent with the physical nature of friction at impact interfaces.

[0046] Second item This term is used to correct for the cumulative effects of various factors on friction at historical moments. During the impact process, friction is continuous, and instantaneous value calculations easily overlook the cumulative effects of earlier states—for example, changes in the friction coefficient caused by an increase in interface temperature in the early stages will continue to affect the efficiency of subsequent friction. Integral term The ratio of the micro-elastic deformation of the impact carrier, the interface temperature, and the frictional force from time 0 to time t is accumulated. This ratio reflects the combined contribution of deformation and temperature to the frictional effect under unit frictional force. When the deformation or temperature increases, the ratio rises, the integral value increases, and the correction magnitude of the friction coefficient also increases accordingly; when the frictional force increases, the ratio decreases, the integral value decreases, and over-correction is avoided. Friction Correction Coefficient This is used to adapt to the different characteristics of various impact interface media, ensuring that the correction effect of the integral term conforms to the actual physical scenario.

[0047] The core innovation of this formula lies in achieving deep coupling of multiple factors, rather than simple superposition—the micro-elastic deformation of the impact carrier. The calculation formula for the microelastic deformation of the preceding impact carrier establishes parameter linkage, ensuring the logical coherence of the entire technical solution. All parameters in the formula can be obtained through a dedicated monitoring module: initial friction coefficient. Real-time friction force can be obtained through static friction testing before impact. Real-time temperature data collected by a friction sensor The reference friction force is collected by an infrared temperature sensor. and coupling coefficient , All of these can be calibrated through preliminary experiments.

[0048] Traditional technical solutions have the following technical problems: there is no quantitative model for the cumulative amount of plastic flow on the surface of the target material, which makes it impossible to determine the degree of drift of the material constitutive parameters, resulting in inaccurate compensation timing and intensity.

[0049] Based on this, the following formula is used to calculate the cumulative amount of plastic flow on the surface of the target material, according to the friction coefficient of the impact interface, the micro-elastic deformation of the impact carrier, and the plastic flow data of the target material surface: ; in, denoted as the cumulative amount of plastic flow on the surface of the target material at time t, which is dimensionless. The initial plastic flow rate of the target material is dimensionless. is the friction coefficient of the impact interface at time t, which is dimensionless; Let be the microelastic deformation of the impact carrier at time t, which is dimensionless. is the critical friction coefficient, which is dimensionless; It is a critical deformation variable with dimensionless dimensions; This is the acceleration coefficient for plastic flow, and its dimensionless value. The time of impact is measured in seconds. The critical time for plastic flow is expressed in seconds. for The coefficient of friction at the constantly impacted interface, which is dimensionless; for The shear strain rate of the target surface at any given moment, with dimensions of 1 / second; It is the integral value of the product of the friction coefficient and the shear strain rate from time 0 to time t, with dimensions 1 / second.

[0050] This formula is the core model for quantifying the degree of plastic flow accumulation on the surface of the target material. It comprehensively considers the synergistic effects of friction coefficient, micro-deformation of the impact carrier, impact time, and shear strain rate. By combining nonlinear functions and integral terms, it accurately depicts the dynamic process of plastic flow from slow development to accelerated accumulation, providing a clear quantitative basis for adjusting the impact contact pressure.

[0051] First item Describe the accelerating effect of the coupling between the friction coefficient and the micro-deformation of the impact carrier on plastic flow. Initial plastic flow rate of the target material. Determined by the target manufacturing process, it reflects the initial state of the target before being impacted. The exponential part of the exponential function. The key driving factor for accelerated plastic flow is the coefficient of friction at the impact interface. The larger the value, the stronger the heat and shear force generated by interfacial friction, and the more significant the slip drive on the nanocrystals of the target surface; the greater the microelastic deformation of the impact carrier. The larger the coefficient of friction, the more concentrated the interfacial contact pressure, and the higher the probability of nanocrystalline crack initiation. (Critical coefficient of friction) and critical deformation The threshold that constitutes the acceleration of plastic flow, when Exceed When the exponential term increases rapidly, the plastic flow enters the acceleration stage, which is completely consistent with the physical phenomenon observed in the experiment that "the crack initiation rate increases significantly after the micro-gap exceeds the critical value". The exponential form can accurately characterize this linear acceleration law.

[0052] Second item This comprehensively reflects the cumulative effect of impact time and shear strain rate. Critical impact time. It is the time threshold for the target material to transition from elastic deformation to plastic deformation, when the impact time... Exceed Subsequently, the damage to the nanocrystals on the target surface changed from reversible to irreversible, and plastic flow began to accumulate continuously. Using a 1.5-power... The nonlinear form is because the actual cumulative rate of plastic flow upon impact is not uniform, but gradually increases over time—plastic flow is slow in the initial stage of impact, but the cumulative rate increases significantly in the later stage due to the superposition of nanocrystal slip and crack propagation. The 1.5-power nonlinear form can accurately match this law, avoiding the underestimation of plastic flow caused by the linear assumption. Integral term The product of the friction coefficient and the shear strain rate of the target surface is accumulated from time 0 to time t. Directly reflects the slip velocity of the nanocrystals on the target surface and the coefficient of friction. After coupling, the driving effect of historical friction on plastic flow is fully reflected. Plastic flow acceleration coefficient. This is used to correct for the intensity differences in plastic flow acceleration in different target materials, ensuring the physical rationality of the formula calculation results.

[0053] The design logic of this formula closely follows the physical evolution of plastic flow on the target surface. The first term captures the acceleration effect of plastic flow caused by multi-factor coupling, while the second term covers the cumulative influence of time and shear strain rate. These two terms work together to form a complete quantitative model. Each parameter in the formula has a clear physical meaning and acquisition path: initial plastic flow rate. Critical parameters can be obtained from the factory testing data of the target material. , , The coefficient of friction can be determined through prior impact tests. From the formula for calculating the coefficient of friction, shear strain rate Signals can be extracted from ultrasonic array probes.

[0054] The technical effects achieved by this solution include establishing a quantitative model of the cumulative amount of plastic flow on the surface of the target material, accurately judging the degree of drift of the material constitutive parameters, and providing accurate timing and intensity basis for compensation.

[0055] Traditional technical solutions suffer from the following technical problems: lack of a high-performance central control architecture, high latency in data processing and instruction generation, inability to achieve efficient coordination and control of multiple modules, and impact on the real-time performance of material constitutive optimization.

[0056] Based on this, the central control module includes a microprocessor and a control algorithm. The microprocessor adopts the ARM Cortex-A9 architecture, and the control algorithm is stored in the flash memory of the microprocessor. The high-speed data acquisition unit transmits the micro-elastic deformation data of the impact carrier to the microprocessor via the SPI bus. The microprocessor calls the control algorithm to synchronously process the micro-elastic deformation data of the impact carrier, the friction state data of the impact interface, and the plastic flow data of the target material surface (target impact response data), and generates stress wave control signal and impact pressure adjustment signal. The stress wave control signal is transmitted to the stress wave control module, and the impact pressure adjustment signal is transmitted to the impact pressure adjustment module.

[0057] The central control module is based on an ARM Cortex-A9 architecture microprocessor with a quad-core design and a clock speed of up to 1.2GHz, possessing powerful parallel data processing capabilities. The control algorithm includes three core subroutines: data synchronization processing, parameter calculation, and signal generation. These are stored in the microprocessor's 8GB flash memory in binary format to ensure rapid loading and execution after power-on. The high-speed data acquisition unit, the impact interface friction state monitoring module, and the target material plastic flow monitoring module are connected to the microprocessor via SPI bus, industrial bus, and high-speed serial interface, respectively, with data transmission rates no less than 100Mbps. After receiving data from each module, the microprocessor calls the data synchronization processing subroutine to align data from different sources by timestamp for synchronized processing; it calls the parameter calculation subroutine to calculate the micro-elastic deformation of the impact carrier, the impact interface friction coefficient, and the cumulative amount of plastic flow on the target material surface using the formulas described in the previous embodiment; and it calls the signal generation subroutine to generate corresponding stress wave control signals and impact pressure adjustment signals based on the calculation results. The signals are in digital pulse form to ensure transmission accuracy.

[0058] The technical effects achieved by this solution include building a high-performance central control architecture, reducing data processing and instruction generation delays, realizing efficient multi-module collaborative control, and ensuring the real-time and accurate optimization of material constitutive closed-loop.

[0059] Traditional technical solutions suffer from the following problems: lack of targeted stress wave control modules, inability to dynamically adjust the stress wave propagation state based on microscopic deformation, and poor optimization effect of material constitutive stress response.

[0060] Based on this, the stress wave control module includes a piezoelectric transducer array and a signal generator. The piezoelectric transducer array is electrically connected to the signal generator, and the signal generator is electrically connected to the central control module. The central control module transmits the stress wave control signal to the signal generator. The signal generator generates an adaptive drive signal based on the stress wave control signal and transmits it to the piezoelectric transducer array. The piezoelectric transducer array adjusts the vibration frequency and phase based on the adaptive drive signal, thereby changing the propagation characteristics of the stress wave inside the impact carrier, optimizing the material constitutive stress response, and improving the material constitutive adaptation accuracy.

[0061] The stress wave modulation module consists of a piezoelectric transducer array and a signal generator, which are electrically connected via a shielded cable. The piezoelectric transducer array contains 24 independent transducer units, uniformly bonded to the surface of the impact carrier, covering the main propagation path of the stress wave. Each transducer unit can independently generate vibration, altering the propagation characteristics of the stress wave within the impact carrier. The signal generator employs direct digital synthesis technology, generating an adaptive drive signal with a frequency range of 1kHz to 1MHz and continuously adjustable phase, based on the received stress wave modulation signal. The voltage amplitude of the drive signal is dynamically adjusted within the range of 0 to 10V. The central control module determines the target frequency and phase for stress wave modulation based on the micro-elastic deformation of the impact carrier, generates the stress wave modulation signal, and transmits it to the signal generator. The signal generator converts the modulation signal into a corresponding adaptive drive signal, transmitting it to each unit of the piezoelectric transducer array. Each unit adjusts its vibration frequency and phase according to the drive signal, generating vibrations opposite to those of the stress wave within the impact carrier, thereby optimizing the material's constitutive stress response and reducing constitutive parameter deviations.

[0062] The technical effects achieved by this solution include realizing dynamic and precise control of stress wave propagation state, effectively optimizing material constitutive stress response, improving material constitutive fitting accuracy, and providing key support for real-time optimization of material constitutive structure.

[0063] Traditional technical solutions suffer from the following problems: lack of an effective impact pressure adjustment module, inability to accurately adjust the impact contact pressure based on the cumulative amount of plastic flow, and poor effect in suppressing material constitutive parameter drift.

[0064] Based on this, the impact pressure adjustment module includes an electro-hydraulic servo valve and a pressure actuator. The electro-hydraulic servo valve is electrically connected to the pressure actuator and to the central control module. The central control module calculates the pressure adjustment amount based on the cumulative amount of plastic flow on the surface of the target material, generates an impact pressure adjustment signal, and transmits it to the electro-hydraulic servo valve. The electro-hydraulic servo valve controls the flow and pressure of hydraulic oil according to the impact pressure adjustment signal, drives the pressure actuator to change the impact contact pressure, compensates for the constitutive parameter drift caused by the plastic flow of the target material, and maintains the stability of the material constitutive fit.

[0065] The impact pressure adjustment module consists of an electro-hydraulic servo valve and a pressure actuator, which are connected via hydraulic lines. The electro-hydraulic servo valve is connected to the central control module via a signal cable. The electro-hydraulic servo valve adopts an electro-feedback structure, which can precisely control the flow and pressure of hydraulic oil according to the input impact pressure adjustment signal, with a control accuracy of 0.01MPa. The pressure actuator adopts a piston structure and is connected to the impact drive mechanism of the impact carrier, which can convert hydraulic energy into mechanical force and change the impact contact pressure.

[0066] The central control module determines the degree of drift in the material constitutive parameters based on the accumulated amount of plastic flow on the target surface, calculates the required pressure adjustment, and generates a corresponding impact pressure adjustment signal, which is a standard current signal of 4 to 20 mA. Upon receiving the impact pressure adjustment signal, the electro-hydraulic servo valve adjusts the valve core opening, controls the flow rate and pressure of the hydraulic oil flowing into the pressure actuator, drives the piston of the pressure actuator to move, and thus changes the impact contact pressure of the impact carrier. This compensates for the decrease in material constitutive fitting accuracy caused by the plastic flow of the target material, maintaining the stability of the material constitutive fitting.

[0067] The technical effects achieved by this solution include enabling precise dynamic adjustment of the impact contact pressure, effectively compensating for the drift of material constitutive parameters, maintaining the stability of material constitutive fit, and ensuring the consistency of the output of the target material's impact mechanical properties.

[0068] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A real-time material constitutive optimization method based on the impact response of a target material, comprising acquiring key physical parameters such as the yield strength, elastic modulus, and density of the target material, and the elastic modulus, Poisson's ratio, and density of the impact carrier, and performing a target impact operation; characterized in that, Also includes: Real-time capture of micro-elastic deformation data of the impact carrier, friction state data of the impact interface, and plastic flow data of the target material surface; calculation of micro-elastic deformation of the impact carrier based on the micro-elastic deformation data of the impact carrier and the real-time impact stress during the impact process; calculation of the friction coefficient of the impact interface by combining the micro-elastic deformation of the impact carrier, friction state data of the impact interface, and impact time. Based on the friction coefficient of the impact interface, the micro-elastic deformation of the impact carrier, and the plastic flow data of the target surface, the cumulative amount of plastic flow on the target surface is calculated. The stress wave propagation state of the impact carrier is adjusted according to the micro-elastic deformation of the impact carrier to optimize the constitutive stress response characteristics of the material. The impact contact pressure is adjusted according to the cumulative amount of plastic flow on the target surface to compensate for the constitutive parameter drift caused by the plastic flow of the target. Through multi-parameter linkage, a closed-loop optimization of the target impact response and material constitutive parameters is formed, realizing real-time accurate adaptation and stable output of the material constitutive structure.

2. The real-time material constitutive optimization method based on the impact response of a target material according to claim 1, characterized in that, Real-time capture of micro-elastic deformation data of the impact carrier is achieved through an impact carrier micro-deformation monitoring module, which includes a laser interferometer and a high-speed data acquisition unit. The laser interferometer is electrically connected to the high-speed data acquisition unit. The laser interferometer emits a coherent laser beam onto the surface of the impact carrier, receives the reflected laser beam, and converts it into the original micro-deformation signal. The high-speed data acquisition unit receives the original micro-deformation signal and performs analog-to-digital conversion to obtain the micro-elastic deformation data of the impact carrier. The impact carrier micro-elastic deformation monitoring module transmits the impact carrier micro-elastic deformation data to the central control module. The central control module receives and processes the impact carrier micro-elastic deformation data, providing basic data for subsequent calculation of material constitutive correlation parameters.

3. The real-time material constitutive optimization method based on the impact response of a target material according to claim 1, characterized in that, Real-time capture of the friction state data of the impacted interface is achieved through the impacted interface friction state monitoring module, which includes an infrared temperature sensor and a friction force sensor. The infrared temperature sensor and the friction force sensor are electrically connected to the central control module. The infrared temperature sensor detects the real-time temperature data of the impacted interface, and the friction force sensor detects the real-time friction force data of the impacted interface. The temperature data and friction force data together constitute the impacted interface friction state data. The impacted interface friction state monitoring module transmits the impacted interface friction state data to the central control module in real time. The central control module preprocesses the friction state data to remove interference signals.

4. The real-time material constitutive optimization method based on the impact response of a target material according to claim 1, characterized in that, Real-time capture of plastic flow data on the target surface is achieved through a target plastic flow monitoring module. This module includes an ultrasonic array probe and a signal processor. The ultrasonic array probe is electrically connected to the signal processor, which is in turn electrically connected to the central control module. The ultrasonic array probe emits ultrasonic signals to the target surface, receives the ultrasonic signals reflected from the target surface, and transmits them to the signal processor. The signal processor analyzes and processes the reflected ultrasonic signals, extracts the plastic flow characteristic parameters of the target surface, and generates target surface plastic flow data. This plastic flow data is transmitted to the central control module for subsequent calculation of material constitutive correlation parameters.

5. The real-time material constitutive optimization method based on the impact response of a target material according to claim 1, characterized in that, The following formula is used to calculate the microelastic deformation of the impact carrier based on its microelastic deformation data and real-time impact stress during the impact process: ； in, Let be the microelastic deformation of the impact carrier at time t, which is dimensionless. The initial microscopic deformation of the impact carrier is dimensionless. is the deformation attenuation coefficient, with dimensions 1 / (Pa·s); Let be the real-time impact stress at time t, with dimensions in Pascals; The time of impact is measured in seconds. The Poisson's ratio of the impact carrier is dimensionless. The elastic modulus of the impact carrier is expressed in Pascals. ω is the angular frequency of the deformation vibration, with dimensions in radians per second; is the stress-deformation coupling coefficient, with dimensions 1 / Pa; for The impact stress at time t is in Pascals. for The plastic strain rate of the carrier under constant impact, with dimensions 1 / second; It is the integral value of the product of the impact stress and the plastic strain rate from time 0 to time t, with dimensions 1 / second.

6. The real-time material constitutive optimization method based on the impact response of a target material according to claim 5, characterized in that, When calculating the friction coefficient at the impact interface by combining the micro-elastic deformation of the impact carrier, the friction state data of the impact interface, and the impact time, the following formula is used: ； in, is the friction coefficient of the impact interface at time t, which is dimensionless; The initial friction coefficient of the impacted interface is dimensionless. Let be the microelastic deformation of the impact carrier at time t, which is dimensionless. Let be the real-time frictional force on the impacted interface at time t, with the dimension of Newton; The reference friction force at the impacted interface is expressed in Newtons. The friction-temperature coupling coefficient has dimensions of 1 / K. Let t be the real-time temperature of the impacted interface at time t, in Kelvin. This is a correction factor for friction, with dimensions in N·K; for The micro-elastic deformation of the carrier under constant impact has a dimensionless dimension. for The temperature of the interface under constant impact, in Kelvin; for The frictional force on the constantly impacted interface, with the dimension of Newton; The integral value of the ratio of the microelastic deformation of the impact carrier, the interface temperature, and the frictional force from time 0 to time t is given, with dimensions in K / N.

7. The real-time material constitutive optimization method based on the impact response of a target material according to claim 6, characterized in that, When calculating the cumulative amount of plastic flow on the surface of the target material based on the friction coefficient of the impact interface, the micro-elastic deformation of the impact carrier, and the plastic flow data of the target material surface, the following formula is used: ； in, denoted as the cumulative amount of plastic flow on the surface of the target material at time t, which is dimensionless. The initial plastic flow rate of the target material is dimensionless. is the friction coefficient of the impact interface at time t, which is dimensionless; Let be the microelastic deformation of the impact carrier at time t, which is dimensionless. is the critical friction coefficient, which is dimensionless; It is a critical deformation variable with dimensionless dimensions; This is the acceleration coefficient for plastic flow, and its dimensionless value. The time of impact is measured in seconds. The critical time for plastic flow is expressed in seconds. for The coefficient of friction at the constantly impacted interface, which is dimensionless; for The shear strain rate of the target surface at any given moment, with dimensions of 1 / second; It is the integral value of the product of the friction coefficient and the shear strain rate from time 0 to time t, with dimensions 1 / second.

8. The real-time material constitutive optimization method based on the impact response of a target material according to claim 2, characterized in that, The central control module includes a microprocessor and a control algorithm. The microprocessor adopts an ARM Cortex-A9 architecture, and the control algorithm is stored in the flash memory of the microprocessor. The high-speed data acquisition unit transmits the micro-elastic deformation data of the impact carrier to the microprocessor via the SPI bus. The microprocessor calls the control algorithm to synchronously process the micro-elastic deformation data of the impact carrier, the friction state data of the impact interface, and the plastic flow data of the target material surface, generating stress wave control signals and impact pressure adjustment signals. The stress wave control signal is transmitted to the stress wave control module, and the impact pressure adjustment signal is transmitted to the impact pressure adjustment module.

9. The real-time material constitutive optimization method based on the impact response of a target material according to claim 8, characterized in that, The stress wave control module includes a piezoelectric transducer array and a signal generator. The piezoelectric transducer array is electrically connected to the signal generator, and the signal generator is electrically connected to the central control module. The central control module transmits the stress wave control signal to the signal generator. The signal generator generates an adaptive drive signal based on the stress wave control signal and transmits it to the piezoelectric transducer array. The piezoelectric transducer array adjusts the vibration frequency and phase based on the adaptive drive signal, thereby changing the propagation characteristics of the stress wave inside the impact carrier, optimizing the material constitutive stress response, and improving the material constitutive adaptation accuracy.

10. The real-time material constitutive optimization method based on the impact response of a target material according to claim 8, characterized in that, The impact pressure adjustment module includes an electro-hydraulic servo valve and a pressure actuator. The electro-hydraulic servo valve is electrically connected to the pressure actuator and to the central control module. The central control module calculates the pressure adjustment amount based on the cumulative amount of plastic flow on the surface of the target material, generates an impact pressure adjustment signal, and transmits it to the electro-hydraulic servo valve. The electro-hydraulic servo valve controls the flow and pressure of hydraulic oil according to the impact pressure adjustment signal, drives the pressure actuator to change the impact contact pressure, compensates for the constitutive parameter drift caused by the plastic flow of the target material, and maintains the stability of the material constitutive fit.

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