69 results about "Wear simulation" patented technology

The invention relates to the technical field of fan blades, in particular to an automatic fan blade coating spraying method and system based on an unmanned aerial vehicle. Comprising the steps that a plurality of blade subareas are set according to the surface structure of the fan blade; according to a preset wear simulation model, an expected wear value of each blade sub-region is generated, and whether a primary spraying strategy is generated or not is judged according to the expected wear values; acquiring a spraying monitoring packet according to a preset feedback time node, and judging whether to correct the primary spraying strategy according to the spraying monitoring packet; the wear degree of each area of the fan blade is remotely predicted according to the wear simulation model in combination with environmental monitoring parameters, each wear point of the protective coating is accurately positioned in combination with image data acquired by the unmanned aerial vehicle, and accurate control of the flight position of the unmanned aerial vehicle is realized by acquiring feature points of each blade sub-area. And meanwhile, the flight speed and the coating flow of the unmanned aerial vehicle are dynamically corrected in time by periodically collecting the thickness of a spraying layer in the spraying process, and the spraying execution efficiency is improved.

The present invention discloses a method and system for real-time monitoring of the wheel-rail matching state and wheel wear of a rail vehicle. The method comprises the following steps: establishing and performing wear simulation processing on a multi-body dynamics model to obtain vehicle wheel wear at different mileages; collecting axle box vibration accelerations of wheels at different wheel wear levels and performing feature analysis on the axle box vibration accelerations, and extracting axle box lateral vibration accelerations from the axle box vibration accelerations as a training data set; calculating that there is a positive relationship between the wheel wear level and the equivalent taper, and using a correlation model to verify that there is a mapping relationship between wheel wear, equivalent taper, and axle box lateral vibration acceleration; constructing a pre-trained spectrum model, and inputting the training data set into the pre-trained spectrum model for feature training to obtain a spectrum model; collecting a set of axle box lateral vibration accelerations as a test data set and inputting the test data set into the spectrum model to obtain the vehicle wheel-rail matching state and wheel wear level under the axle box lateral vibration accelerations.

The invention is suitable for the technical field of wear-resistant block testing, and particularly relates to a wear-resistant block dynamic wear simulation method which comprises the following steps: acquiring dredging task information, and obtaining multiple pieces of simulation information based on the dredging task information; wherein the dredging task information comprises a dredging area and a dredging amount, and the simulation information comprises a simulation environment and a simulation condition; in the multiple simulation environments, abrasion simulation is conducted on the simulation object according to the multiple simulation conditions, and multiple simulation results are obtained; and the multiple simulation results are processed based on the dredging amount, the dredging sequence obtained through the multiple pieces of simulation information and the multiple dredging times, and the abrasion result is obtained. According to the dynamic wear simulation method for the wear-resistant block, the deviation between the wear simulation result and the real wear condition can be reduced, so that the simulation result better fits the real dredging operation.

The simulation experiment device for the frictional wear behavior of the surface of the artificial hip joint sample comprises a rack, a hydraulic loading mechanism, a hip joint simulation opposite-grinding pair mechanism, a composite motion mechanism, a lubricating liquid adding mechanism and an abrasive dust adding mechanism, and the simplification of the opposite-grinding pair structure and the simulation of an opposite-grinding track are both considered; a lubricating liquid adding mechanism and an abrasive dust adding mechanism are introduced in combination with actual conditions, artificial hip joint friction wear simulation under different lubricating conditions and abrasive dust forming conditions can be better simulated, and the artificial hip joint friction wear simulation device is more suitable for artificial joint material performance evaluation and selection under laboratory conditions.

The invention discloses an artificial joint frictional wear simulation testing machine and a testing method thereof. The testing machine comprises a motion loading module, a sample clamping module and a motion coupling module, the motion loading module mainly drives an upper sample of the sample clamping module to generate fundamental frequency swing through a double four-bar-planetary gear train composite mechanism, and the sample clamping module integrates a quick disassembly and assembly clamp and a temperature control lubrication system to fix various joint prostheses and simulate the physiological environment of the human body. And the motion coupling module cooperates with the motion loading module based on the six-degree-of-freedom parallel platform to realize composite action and suppress vibration interference. Through cooperative control of the three modules, the problems that an existing artificial joint friction and wear simulation testing machine is limited to a single joint type and cannot adapt to various artificial joint prostheses, and the degree of freedom of motion is limited, so that various motion forms of the artificial joint cannot be completely restored are solved.

The invention discloses a durability test method and device suitable for an active actuator hydraulic pump, a multi-physics field coupling technology, namely force-temperature cooperative loading, is adopted, dynamic parameter adjustment is realized through data driving, a durability simulation system with a fatigue, wear and aging multi-factor synergistic effect is constructed, and the durability test method and device suitable for the active actuator hydraulic pump are applied to fatigue and wear simulation. On the basis of multi-source data, a complex and changeable force value signal is equivalent to a representative block spectrum by applying an equivalent damage principle, an active actuator is driven to move through a force value, and the fatigue and wear process is accurately strengthened; for aging simulation, in combination with temperature signal data of the active actuator and environment temperature signal data, accelerated simulation of an aging process is realized by utilizing an Arenius model. By collecting multi-source data in real time and carrying out comprehensive analysis, test parameters are dynamically adjusted, the performance attenuation process of the active actuator hydraulic pump under the combined action of multiple factors under the actual working condition is truly restored, and the accuracy and reliability of the test are remarkably improved.

The invention relates to the technical field of touch screen antibacterial detection, and discloses an antifouling and antibacterial effect detection device for a touch screen, which comprises a base assembly, a wear simulation assembly and a moving assembly, the wear simulation assembly comprises a finger simulation structure and a sebum secretion mechanism, the finger simulation structure communicates with the sebum secretion mechanism, and the sebum secretion mechanism can provide sebum-like secretion liquid for the finger simulation structure; the moving assembly can move back and forth along the base assembly, the abrasion simulation assembly is installed on the moving assembly, and friction simulation is conducted when the abrasion simulation assembly makes contact with the touch screen. The sebum secretion mechanism is used for releasing sebum-like secretions, damage generated by a biofilm on the touch screen and mechanical friction in actual use is simulated, the scene that multiple persons use the touch screen for a long time in public places can be effectively simulated, the accuracy of touch screen antibacterial performance detection is greatly improved, and the detection cost is reduced. And a high-simulation test platform is provided for product quality control.

The invention relates to an aircraft outer surface coating high temperature and wear resistance detection device, and relates to the technical field of detection devices.The aircraft outer surface coating high temperature and wear resistance detection device comprises a detection table, the interior of the detection table is divided into a high temperature simulation detection cabin and a wear simulation detection cabin through a partition plate, and a detection piece and a leak hole supporting table are arranged in the high temperature simulation detection cabin; the device further comprises a moving mechanism, a rotary friction piece and a cooling assembly, the moving mechanism is used for driving the leak hole supporting table to achieve stretching, retracting, deflection and transverse displacement, the rotary friction piece can stretch and retract and rub the to-be-detected sample piece in a line contact or surface contact mode, and the cooling assembly comprises a cooling mechanism and a stretching and retracting mechanism. The rotary friction piece has a linear contact friction mode and a surface contact friction mode, telescopic adjustment can be achieved through a fourth telescopic rod, rotation can be controlled through a first motor, dynamic conversion of contact forms of movable parts of an airplane in movement can be simulated, and abrasion detection of friction abrasion and particle erosion is achieved in cooperation with erosion simulation of a particle acceleration device.

This invention discloses a shoe wear simulation test circuit and method. The shoe wear simulation test circuit includes at least an EBS controller, and the shoe wear simulation test method includes: acquiring the current test voltage, providing the current test voltage to the EBS controller, and receiving the current feedback signal output by the EBS controller; determining the current theoretical remaining wear of the shoe based on the current test voltage; determining the current tested remaining wear of the shoe based on the current feedback signal; and determining the current test result based on the current theoretical remaining wear and the current tested remaining wear. The technical solution of this invention can realize the simulation test of shoe wear detection function in a laboratory environment, with short test time and high accuracy, thus improving the reliability and safety of the braking system.

The invention discloses a high-temperature friction testing device for a hydraulic slide valve. The device is composed of a valve element clamping module, a valve body mounting module, a vertical force applying module, a high-temperature heating module and a friction force applying module. The valve element clamping module is composed of a valve element, a valve element centering fixing column, a valve element fixing clamp, a valve element mounting rod and a mounting rod fixing shell. The valve body mounting module consists of an oil storage tank, an oil storage tank fixing plate and a valve body; the vertical force applying module comprises X, Y and Z three-axis guide rails driven by a motor, and pressure and friction force sensors; the high-temperature heating module surrounds the whole valve body and the valve core mounting part; the friction force applying module is driven by a motor to drive the oil storage tank to achieve axial movement of the valve body, and relative friction between the valve element and the valve body is achieved. The device can carry out friction tests of the hydraulic slide valve at different temperatures, realizes friction wear simulation of the hydraulic slide valve under multiple working conditions of oil environment, high temperature, pollution and the like, and provides data support for wear and degradation tests of the hydraulic slide valve.

This invention relates to the technical field of simulation analysis methods for downhole tools in oil and gas fields, and discloses a high-precision dynamic simulation analysis method for full-size drilling and milling tools based on an adaptive FEM-SPH coupled algorithm. The method includes three processes: model establishment, model solving, and performance evaluation. The first process is model establishment, which involves obtaining the geometric model of the drilling and milling tool through model reconstruction technology, and establishing a high-precision dynamic simulation analysis model for the full-size drilling and milling tool based on a wear prediction model and the adaptive SPH-FEM coupled algorithm. The second process is model solving, which involves solving the model after successively changing the drilling pressure and rotational speed, and batch processing the simulation results using Python. The third process is performance evaluation, which evaluates the performance of the drilling and milling tool from three aspects: efficiency, safety, and lifespan. This invention improves simulation accuracy from three aspects: geometric modeling, wear simulation, and solution algorithm, and evaluates the performance of the drilling and milling tool from three aspects: efficiency, safety, and lifespan.

The invention provides a steam generator pipeline wear simulation method, system and device and a storage medium, and relates to the technical field of physical testing. The simulation method comprises the steps that a fluid-solid coupling model of the heat transfer tube bundle and the foreign matter is established, and the foreign matter model is set to be a rigid body dynamic mesh model; solving the fluid-solid coupling model to determine stress information and motion information of the foreign body model under the action of the flow field; and based on the instantaneous speed and the resistance, the accumulated wear depth of the foreign matter to the heat transfer tube bundle under the action of the flow field is determined. According to the simulation method, the foreign matter stress information is captured in real time in the foreign matter movement process, the foreign matter movement information is updated, meanwhile, the abrasion rate of the heat transfer tube bundle is synchronously calculated based on the foreign matter stress and movement information, and full-process real-time simulation of lifting resistance, displacement and the abrasion rate of the foreign matter in the simulation process is achieved; and the accuracy and the reliability of a wear depth simulation result are greatly improved.

The invention discloses a method for measuring human body data by integrating a visual sensor on a mobile terminal. Hardware and environment detection: detecting built-in hardware of the mobile terminal, and detecting whether light in a measurement environment meets a measurement condition or not; guiding measurement, informing the measured person of the wearing requirement during measurement, and detecting and prompting the position range and the motion amplitude of the measured person during shooting; data acquisition, including a dynamic mode and a static mode, and completing corresponding data acquisition in the corresponding dynamic mode and static mode; data processing and modeling, de-noising and filtering, and model reconstruction; and data display and data uploading: displaying the established 3D model through a mobile terminal, and uploading the data. According to the method for measuring the human body data by integrating the visual sensor on the mobile terminal, through the mode of the mobile terminal, a customer can conveniently scan the three-dimensional data of the customer by himself / herself, and therefore a corresponding three-dimensional model is generated for wearing simulation.

The invention provides a rigidity and strength fatigue wear simulation analysis method and equipment for a clutch separation device and a medium, and belongs to the technical field of vehicle clutches. Three-dimensional models of a separation shifting fork shaft, a rocker arm and a gearbox front shell are obtained, and a finite element model is established based on the three-dimensional models; defining a constraint set point, a surface grid set, a contact relation, a material attribute and a grid type; and applying a first load to the surface grid set to establish pre-contact, and then applying a second load to perform static simulation. Extracting stress data to determine a dangerous position, and extracting displacement data to calculate torsional rigidity. And based on the dangerous position and second load cyclic loading, fatigue safety coefficient distribution is obtained, and bushing wear data are extracted to evaluate the wear condition. The rigidity, the fatigue life and the lining abrasion performance of the separation device are evaluated synchronously through simulation, a stress danger area and an abrasion overrun area are positioned, data support is provided for structural optimization and maintenance period formulation, the reliability of the clutch is improved, and the service life of the clutch is prolonged.

The present application belongs to the technical field of health state evaluation and prediction of mechanical transmission system, and proposes a kind of parallel misalignment state mechanical transmission component wear amount probability prediction method.It includes the following steps: step S1: build the three-dimensional model of mechanical transmission component containing parallel misalignment error;Step S2: considering the random uncertainty of load profile, carry out wear simulation analysis based on grid node iteration;Step S3: considering the cognitive uncertainty of the model itself, train the Bayesian long short-term memory network model;Step S4: predict the expected value of wear and its uncertainty interval.The present application improves the description accuracy of traditional finite element method on mechanical transmission component wear behavior, breaks through the limitation of wear amount deterministic numerical prediction, provides high robustness and high reliability of probability prediction result, and provides scientific basis and data support for transmission system condition-based maintenance decision.

The utility model provides a high and low temperature alternating environment wear simulation experiment machine which comprises a rack, and a heating mechanism, a wear mechanism, a blowing cooling mechanism and a clamping mechanism which are arranged on the rack, and the heating mechanism comprises an electromagnetic induction heater arranged on the rack; the abrasion mechanism comprises a grinding machine installed on the machine frame and a first driving mechanism connected with the grinding machine to drive the grinding machine to move up and down, the clamping mechanism comprises a clamp installed on the machine frame and a second driving mechanism driving the clamp to move, and the blowing cooling mechanism is installed on the machine frame and used for conducting blowing cooling on grid sections on the clamp. The high and low temperature alternating environment abrasion simulation experiment machine can consider factors such as reciprocating heating and cooling, temperature monitoring, contact load, mechanical abrasion and cyclic experiments, and can reduce actual working conditions of abrasion of quick-wear parts in metallurgical processes such as sintering and pelletizing in a high-precision manner, so that the influence effect of a coating technology on the service life of a grid section is verified.

The present invention relates to the technical field of wheel tread wear simulation, and discloses a method and system for accelerating the calculation of wheel tread wear. The method includes the following steps: taking the original wheel tread profile as the starting point of model simulation, calculating the wheel tread wear rate every set mileage until the wear rate reaches stability, and obtaining the mileage and wheel tread profile at this moment; taking the mileage and wheel tread profile at this moment as the starting point of model simulation, and magnifying the running mileage and wear amount calculated for each round until the cumulative running mileage of the vehicle meets the requirement of the total calculation mileage. The present invention can ensure the correctness of the tread wear calculation result on the basis of improving the operation speed.

The invention provides a simulation research method for wear resistance of a nano-diamond ceramic coating. The invention aims to solve the problem that the existing wear simulation depends on a user subprogram, needs to empirically zoom coefficients and causes unreliable results due to grid-physical mismatch. According to the method, on the basis of Abaqus software, a high-fidelity contact-wear coupling model is constructed, the size of a local grid is determined in combination with the Hertz contact theory, and multi-cycle automatic control is achieved through a native * STEP CYCLING instruction; meanwhile, differentiated wear parameters are defined for the two contact faces respectively, and a termination criterion based on the accumulated wear depth is introduced. By means of the technical scheme, high-precision, efficient and stable abrasion evolution simulation of the nano-diamond ceramic coating can be achieved without external programming.

According to the method, an improved Johnson-Cook constitutive model subprogram is achieved in a finite element software implicit algorithm material library, compared with a traditional Johnson-Cook constitutive model, the improved Johnson-Cook constitutive model corrects a plastic deformation term and a strain rate term, and the improved Johnson-Cook constitutive model can more accurately describe the abrasion behavior of the power transmission line hardware under impact loads such as instantaneous strong wind. The improved Johnson-Cook constitutive model is embedded, developed and improved in an implicit algorithm material library, the implicit algorithm can more accurately achieve constitutive integration of the material compared with an explicit algorithm, the method can more accurately describe the stress-strain relation of the fitting material under different strain rates, and the precision of transmission line fitting abrasion simulation is improved.

The invention provides an improved constitutive model suitable for line hardware wear simulation and an undetermined parameter fitting method of the improved constitutive model. The Johnson-Cook constitutive model improves the influence of a plastic deformation item and a strain rate item on flow stress. According to the method, by improving the strain rate related items of a traditional Johnson-Cook constitutive model, the stress-strain relation under impact loads such as instantaneous strong wind can be better described, and therefore the improved Johnson-Cook constitutive model has higher precision when the abrasion behavior of the transmission line hardware fitting is simulated.

The invention provides a transmission line fitting friction wear analysis method and system and a storage medium, the method reasonably simplifies a fitting assembly to be analyzed, accelerates the fitting wear simulation speed diagram, and improves the fitting wear simulation speed diagram through defining reasonable material attributes, a Johnson-Cook constitutive relationship and a Johnson-Cook fracture criterion, load and constraint conditions. And the wear simulation accuracy of the hardware fitting is improved. By setting reasonable grid types and unit sizes, the wear simulation speed and precision of the power transmission line hardware fitting are balanced.

The invention relates to the technical field of road engineering material testing, and particularly discloses a pavement fog seal material anti-skid performance testing device, a detection base is fixed on the top of a detection device bottom plate, a station driven gear, a substrate chuck and a substrate fixing clamp are sequentially arranged on the detection base, an outer ring linkage gear ring is arranged on the inner side of the detection base, and an inner ring linkage gear ring is arranged on the outer ring linkage gear ring; a detection mechanism fixing ring is fixed to the top of the detection base, an environment simulation ring is installed on the upper portion of the detection base, a simulation ring lifting motor is installed on the side face of the environment simulation ring, a spraying ring is arranged on the top of the environment simulation ring, a heating ring is arranged on the bottom of the environment simulation ring, and a machining ring is arranged on the top of the environment simulation ring. A machining ring lifting motor is installed on the side face of the machining ring, a track rolling simulation mechanism transverse moving motor base and a dynamic abrasion simulation mechanism lifting motor base are fixed to the top of the machining ring, the lower portion of the rolling simulation mechanism lifting motor base is connected with a rolling simulation mechanism base, and the top of a total lifting stud is connected with a device top plate.

The invention provides a wear simulation analysis method and device, electronic equipment and a storage medium, and relates to the technical field of simulation analysis. The method comprises the following steps: establishing a finite element model about a to-be-verified speed reducer shell and a to-be-verified planet row gear ring; based on the finite element model and preset wear control parameters, carrying out wear iterative simulation analysis, and determining an iterative wear result; and based on the iterative wear result, carrying out wear risk evaluation on at least one of the to-be-verified speed reducer shell and the to-be-verified planet row gear ring. Based on finite element modeling and iterative wear simulation analysis, dynamic quantitative characterization and risk evaluation of the wear of the rectangular spline contact part of the planet row type speed reducer are realized, potential defects can be found in advance in the design stage, and the research and development efficiency and the product reliability of the planet row type speed reducer are improved.

The invention relates to an experimental device for the impact and wear resistance of a semi-autogenous mill lining plate, which comprises a lifting device, a ball falling device, an inclined test block and a vibration feeder, and is an impact and wear resistance experimental device capable of really simulating the actual service condition of the semi-autogenous mill lining plate. The combined action of steel balls and grinding materials in the semi-autogenous mill can be truly represented, composite abrasion simulation of steel ball impact, sliding abrasion and grinding material flowing action is achieved through the multifunctional integrated design of the device, the steel balls and the grinding materials can be recycled through an inclined ball recycling baffle, a complex mechanical pushing device is not needed, and the device is simple in structure and convenient to operate. Through combination of the force sensor and the laser scanner, high-precision impact and abrasion data are provided, result analysis is facilitated, impact energy, impact frequency, inclination angle and dynamic displacement speed can be flexibly adjusted, various experiment requirements are met, and a scientific basis is provided for model selection and optimization of lining plate materials.

The application discloses a high-temperature friction testing device for a hydraulic slide valve. The device is composed of a valve core clamping module, a valve body mounting module, a vertical force applying module, a high-temperature heating module and a friction force applying module. The valve core clamping module is composed of a valve core, a valve core centering fixing column, a valve core fixing clamp, a valve core mounting rod and a mounting rod fixing shell. The valve body mounting module is composed of an oil storage tank, an oil storage tank fixing plate and a valve body. The vertical force applying module includes X, Y and Z three-axis guide rails driven by a motor, and pressure and friction force sensors. The high-temperature heating module surrounds the valve body and the valve core mounting part. The friction force applying module is driven by a motor to drive the oil storage tank to realize the axial movement of the valve body and the relative friction between the valve core and the valve body. The device can conduct the friction test of the hydraulic slide valve under different temperatures, realize the friction and wear simulation of the hydraulic slide valve under the working conditions of oil environment, high temperature and pollution and the like, and provide data support for the wear and degradation test of the hydraulic slide valve.

The invention provides a vehicle-mounted lens testing device, which belongs to the technical field of lens testing, and comprises a testing table, and also comprises a wear resistance testing assembly which is arranged at the inner side of the testing table and is used for carrying out wear resistance testing on a lens; the cleaning bin is arranged in one side, far away from the wear-resistant testing assembly, of the testing table; the abrasive belt cleaning assembly is arranged on the inner side of the cleaning bin and used for cleaning the surfaces of the multiple sets of abrasive belts in the abrasion resistance testing assembly. The impurity filtering assembly is arranged on the side, away from the abrasive belt cleaning assembly, of the cleaning bin and used for filtering impurities generated in the testing process; the impurity storage assembly is arranged on the inner side of the bottom of the test board and used for collecting filtered impurities; the four sliding rods are symmetrically and fixedly connected to the two sides of the top of the test board about the central axis of the test board; in the application, the test is closer to the actual use condition through diversified wear simulation, so that the wear resistance of the lens in different environments is comprehensively evaluated.

The present invention discloses a device and evaluation method for simulating fretting fatigue wear of a steel wire rope. The device comprises a test bench, a control system, an anchoring device disposed on the test bench for anchoring the steel wire rope, a loading system symmetrically disposed above and below the test bench, and a chuck and a fixture respectively disposed on the loading system for clamping the anchoring device. The anchoring device comprises a body, through which a first cavity and a second cavity are connected. The diameter of the first cavity matches that of the steel wire rope and is used to pass through a portion of the steel wire rope that remains in its original state. The diameter of the second cavity is twice that of the steel wire rope and is used to pass through a portion of the steel wire rope that is in a dispersed strand state. The present invention can simulate the load conditions of a steel wire rope under actual working conditions and evaluate the impact of the fretting fatigue wear of the steel wire rope on the mechanical properties and life of the steel wire rope based on the damage to the mechanical properties of the steel wire rope after the fretting fatigue wear test and the damage to the mechanical properties of the strands of the steel wire rope after stripping.

This invention relates to an automatic generation method for three-dimensional clothing patterns based on digital twins, belonging to the field of clothing technology. It involves reconstructing a digital twin model based on a real human body three-dimensional scan, constructing an initial finite element model of the three-dimensional clothing surface covering its surface; obtaining a flattened intermediate surface through stress field initialization and unfoldability optimization under physical constraints, and generating cut piece surfaces according to segmentation criteria; converting it into a two-dimensional pattern outline through discrete conformal mapping, and adding darts and seam allowance marks according to pattern-making rules; extracting dynamic stress and deformation data through virtual sewing and wearing simulation; if the fit and comfort threshold is not reached, feedback is provided to adjust constraints or segmentation criteria and iteratively optimize until the final pattern is output. This solves the technical problem of traditional solutions lacking a comprehensive evaluation mechanism that integrates ergonomics, fabric physical properties, and dynamic wearing behavior from the initial design stage, leading to repeated sampling and low efficiency.

The invention provides a diamond grinding wheel wear prediction method which comprises the following steps: performing three-dimensional morphology observation on the surface of a grinding wheel through a high-resolution microscope or a scanning electron microscope to obtain geometrical characteristic data of abrasive particles, and then selecting nine typical abrasive particle shapes based on the observation data to perform three-dimensional modeling to construct an abrasive particle database; performing single-abrasive wear simulation on different workpiece materials in finite element simulation software to obtain data such as wear depth, wear volume, temperature field and grinding force, and establishing a single-abrasive wear database; and finally, mapping the single-abrasive-particle wear data into a grinding wheel abrasive particle database through wear mapping and accumulation, predicting the overall wear condition of the grinding wheel through iterative accumulation, and evaluating the average wear depth, the wear volume and the failure abrasive particle proportion of the grinding wheel based on the accumulated wear data so as to accurately predict the overall wear state of the grinding wheel. The grinding precision and efficiency are improved, the machining quality is kept, the production efficiency is improved, and the service life of the grinding wheel is prolonged.

The invention discloses a shield cutter wear prediction method and system based on dynamic load and frictional work, and the method comprises the steps: obtaining parameters and operation parameters of a to-be-predicted shield cutter, inputting the parameters and operation parameters into a pre-trained wear prediction model, and obtaining the normal dynamic load, slippage and wear loss of the cutter, thereby achieving wear prediction; a training process of the wear prediction model comprises the following steps: step 1, based on different parameters of the shield cutter and shield operation parameters, adopting finite element simulation to obtain a normal dynamic load and a slip amount of the corresponding shield cutter, further calculating to obtain friction work in the shield operation, and adopting discrete element wear simulation to obtain a wear amount of the friction work to the cutter; 2, repeating the step 1 to obtain a plurality of groups of normal dynamic loads, slippage amounts and wear amounts corresponding to different shield cutter operation parameters, and constructing a training set after preprocessing; and 3, training a neural network by using the training set to obtain a wear prediction model meeting training requirements.