71 results about "Normal load" patented technology

The invention discloses an ABS real-time self-adaptive control method and system based on hub sensing signal fusion, and relates to the field of automobile safety control. The method comprises the steps that S1, multi-source hub sensing signals of all wheels are synchronously collected; s2, calculating a hub response coupling factor based on the multi-source hub sensing signal; s3, calculating an instantaneous slip rate based on the coupling factor and the wheel speed in combination with vehicle dynamic parameters; s4, on the basis of the wheel speed, the braking torque and the tangential acceleration, the coupling factor and the instantaneous slip rate are combined, and the normal load is calculated; s5, calculating an adhesion coefficient according to the instantaneous slip rate, the normal load and the wheel speed; s6, according to the slip rate deviation, a fusion weight is generated in combination with the coupling factor, and the adhesion capacity of the whole vehicle is calculated; and S7, according to the adhesion coefficient, the normal load, the slip rate and the adhesion capacity of the whole vehicle, the target braking force is calculated, and the wheel braking strength is adjusted. By monitoring the state of the wheels in real time, the slip rate is accurately controlled, braking force distribution is optimized, and the response precision and stability of the ABS are improved.

The invention discloses high-voltage wiring harness connector terminal fretting wear test equipment which comprises an equipment base, a high-frequency vibration exciter and a lifting platform are mounted on the equipment base, and a mounting platform is arranged at the top of the lifting platform; a left test piece mounting loading mechanism and a right test piece mounting force measuring device are arranged on the mounting platform. The device can realize a multi-physics field coupling test, current-carrying friction and arc erosion of an electric contact surface in a real working condition are simulated by combining a current load with high-frequency mechanical wear, and the electric-mechanical coupling wear characteristic of a new energy automobile charging terminal is accurately reproduced. The device supports the dynamic adjustment of normal load, simulates the contact pressure change of the left and right test samples of the test terminal in the plugging process through the test sample pin and the test sample jack, can be used for researching the relevance between the fretting wear and the contact resistance of the test terminal under different loads, and realizes the test of the terminal under complex working conditions in a laboratory environment. The test process is convenient, efficient and accurate, and the test cost and the test period are greatly reduced.

This invention proposes a micro-motion testing device and method suitable for high-temperature environments. The micro-motion testing device includes a normal load loading device, a micro-motion pad limiting device, a tangential load loading device, a high-temperature loading device, a test piece, and a micro-motion pad. The normal load loading device includes a split-type stress ring, loading bolts, anti-loosening nuts, a loading box, a sensor assembly, a linear bearing, a loading connecting rod, and a water-cooling device. The split-type stress ring is bolted together to form a complete stress ring, facilitating installation and disassembly during testing. Tightening the loading bolts generates a normal compressive force, which is sequentially transferred to the test piece through the sensor assembly, the loading connecting rod, and the micro-motion pad. The loading connecting rod passes through the linear bearing and is mounted on the split-type stress ring, reducing the loss of normal load transmission and improving coaxiality. A water-cooling device is located near the linear bearing on the split-type stress ring to cool the linear bearing and prevent heat transfer to the sensor assembly.

The invention provides a rolling linear guide rail numerical analysis method and system based on comprehensive error import, and belongs to the technical field of rolling linear guide rail thermal coupling parameter numerical analysis. Comprising the following steps: firstly, uniformly converting a comprehensive error into a ball and raceway interference magnitude parameter to calculate a comprehensive interference magnitude, solving a normal load borne by the ball based on a normal load formula, and further determining the heat flux density of a contact area of the rolling linear guide rail and a convective heat transfer coefficient of each surface; then, a steady-state temperature field is solved by constructing a heat conduction model of the rolling linear guide rail; and finally, constructing a structural finite element model consistent with the node number in the heat conduction model, and importing a steady-state temperature field to carry out finite element numerical analysis. According to the method, the rolling linear guide rail load deformation parameters better conforming to the actual working conditions can be obtained, and the calculation accuracy of the rolling linear guide rail value is improved.

The present invention discloses a method and device for testing the tangential stiffness of a material friction and wear testing machine system. The method comprises a base, a lifting mechanism, a connecting plate, a micro-electric cylinder, a grating support rod, a loading rod, a frame mounted on the base, a normal load loading mechanism, and a laser interferometer. The lifting mechanism is mounted on the frame, the connecting plate is mounted on the lifting mechanism, and the micro-electric cylinder and grating support rod are both mounted on the connecting plate. The loading rod is connected to the micro-electric cylinder, which drives the loading rod to perform horizontal reciprocating motion. The loading rod is provided with a lower fixture and a grating fixture, and the grating support rod is provided with a grating displacement sensor located above the grating fixture. The normal load loading mechanism is provided with an upper fixture located directly above the lower fixture. The testing device and method provided by the present invention can test the tangential static and dynamic stiffness of a friction and wear testing machine system, and has high testing efficiency and accuracy.

The application discloses a kind of rock mass hydraulic fracturing test device and method based on flexible hydraulic pillow stress monitoring, comprising: the rock mass to be tested, is provided with the fracturing hole that penetrates normal direction on it;Hydraulic pillow, including flexible normal load loading hydraulic pillow, horizontal load loading hydraulic pillow and longitudinal load loading hydraulic pillow, through hole is arranged on normal load loading hydraulic pillow, water injection fracturing device, including high-pressure water pump, and the fracturing assembly of high-pressure water pump is connected by high-pressure pipeline, the fracturing assembly is set in the fracturing hole of the rock mass to be tested by through hole;Data acquisition system includes hydraulic pillow pressure sensor connected with hydraulic pillow, waterway pressure sensor being arranged on high-pressure pipeline and data acquisition terminal being electrically connected with hydraulic pressure sensor and waterway pressure sensor.The application can perfectly fit the surface of rock mass to realize flexible loading, the additional stress generated by sealing reinforcement measure is considered, and then the precision of triaxial loading is improved.

1. The name of the design product: circuit breaker (125 type). 2. The use of the design product: the design product is used for connecting and breaking normal load current, working current and overload current, connecting and breaking short circuit current. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view. 5. Design 1 is designated as the basic design.

The present application relates to the field of rock mass structure plane mechanical test technology, and particularly relates to a field rock structure plane shearing test system and a test method, comprising a horizontally arranged test platform, a concrete encapsulating shell wrapped on a rock sample, a normal load loading system for applying a normal load on the top surface of the concrete encapsulating shell, a shearing load loading system for applying a shearing load on the side surface of the concrete encapsulating shell, and a data test acquisition system for measuring normal pressure, normal displacement and tangential displacement, wherein the normal load loading system and the shearing load loading system are both arranged on the test platform. The present application applies normal pressure and tangential pressure through the normal load loading system and the shearing load loading system respectively, and obtains relevant displacement parameters through the data test acquisition system with higher precision, so as to quantitatively evaluate and analyze the strength characteristics of the structure plane, and solve the problems of large occupation and low reliability existing in the traditional test method.

The utility model provides a kind of in-situ detection device of concrete shear strength double-sided direct shear method, including H-shaped column test piece in entity concrete work pit, the H-shaped column test piece is provided with shear direction loading device in axial direction, makes H-shaped column test piece damage along the prescribed two shear surfaces, the H-shaped column test piece is provided with normal loading device embedded in work pit and the normal loading device is surrounded in H-shaped column test piece in vertical direction to the axis.The utility model applies different levels of normal load by normal loading device, obtains normal stress;While using shear direction loading device makes H-shaped column test piece damage along the prescribed two shear surfaces, measures corresponding shear load, obtains shear stress;According to normal stress and shear stress under each level of load, according to relevant standard, obtains shear strength, it is strong in practicality, accurate in detection, and reasonable in design.

The invention belongs to the technical field of nuclear energy materials and surface engineering, and particularly relates to application of an MAX phase coating in a lead bismuth environment. The MAX phase coating is deposited on the surface of the structural material, so that the corrosion resistance and wear resistance of the steam generator can be remarkably improved. The result shows that under the conditions that the temperature is 450 DEG C, the normal load is 50N, the displacement amplitude is 75 microns, the vibration frequency is 25Hz and the cycle index is 106, a stable aluminum oxide oxidation layer and a compacted abrasive dust layer can be formed, so that the Ni element is effectively prevented from being dissolved, and the corrosion rate of a structural material is reduced; meanwhile, the abrasion depth of the structural material is reduced by 70% compared with that before protection, the structure is stable, the binding force is high, and the structural material is still kept complete and has no obvious peeling or failure phenomenon even in a long-cycle test.

This invention discloses a fretting fatigue testing device capable of multi-degree-of-freedom loading, belonging to the field of material and component mechanical property testing technology. The device includes a test platform base, a normal load loading mechanism, a normal load support mechanism, a fretting displacement loading mechanism, and a dual specimen clamping device. Left and right support beams are provided on the test platform base. The normal load loading mechanism is located on the right support beam, and the normal load support mechanism is located on the left support beam, forming a closed loop of normal force. The fretting displacement loading mechanism is located on the right support beam. The dual specimen clamping device enables continuous stepless adjustment of the intersection angle with the main specimen. This invention, through the integrated design of adjustable angle, adjustable position, and multi-directional displacement composite loading, solves the problems of existing technologies' inability to accurately simulate complex fretting conditions, fixed contact angles, and insufficient loading accuracy, achieving high-precision and high-reliability fatigue testing of components such as wires under various contact geometries and composite fretting modes.

The invention discloses a fiber reinforced composite material fretting fatigue test clamp suitable for a uniaxial testing machine. The clamp and a test device comprise an upper clamp assembly with a fretting pad limiting device, a lower clamp assembly, a fretting pad, an upper gasket, a lower gasket, a test piece and a stress ring assembly. Wherein the upper clamp assembly and the lower clamp assembly are clamped through a hydraulic chuck and are used for fixing a test piece and transmitting an axial load. The test pieces are arranged in the limiting grooves of the upper and lower clamps, and the upper and lower gaskets are arranged between the two test pieces. The clamp is tightened through the fastening bolt to fix the test piece and prevent slipping; the set screw penetrates through the clamp, the test piece and the gasket to further fix the test piece. The micro-motion pad is arranged in the micro-motion pad limiting groove of the upper clamp, centering is guaranteed, and normal loads are transmitted. The device solves the problem that a fiber reinforced composite material is not matched with a metal material clamp, and has the advantages that the parallelism of a test piece and the centering degree of a micro-motion pad can be ensured, the test piece is prevented from slipping, the test precision is ensured, and the experiment success rate is improved.

The application provides a rock mass weak layer original state solution modification test device and method, which comprises a normal load system for applying a normal stress to a weak layer to be tested, a solution modification system for modifying the weak layer to be tested, a shear load system for applying a shear stress to the weak layer to be tested, and an observation system for observing deformation data in a test process; the normal load system is connected with a rock mass above the weak layer to be tested to simulate an in-situ stress state, the solution modification system is arranged around the weak layer to be tested to realize solution wrapping modification, the shear load system is connected with the weak layer to be tested on a side to carry out a shear mechanical test, and the observation system is arranged corresponding to the weak layer to be tested to collect deformation parameters. The application can carry out the weak layer original state solution modification test, and accurately obtains an influence mechanism of the solution modification on mechanical properties of the weak layer through the shear test.

The invention relates to the technical field of ceiling structures, in particular to an indoor ceiling structure of a large building. Comprising a plurality of keel frames, each keel frame is composed of two main keels distributed front and back, each main keel is provided with a pair of hanging pieces, the lower ends of the main keels are jointly provided with a plurality of auxiliary keels, the main keels are provided with clamping jaws matched with the auxiliary keels in a one-to-one correspondence and clamping mode, the main keels are provided with fastening mechanisms, and a connecting mechanism is arranged between every two adjacent keel frames. Through the synergistic effect of the fastening mechanism and the connecting mechanism, the ceiling structure keeps extremely high stability under the normal load, graded unloading can be achieved through the preset breaking point when the ceiling is overloaded, and the problem of systematic failure caused by insufficient joint strength or sudden breaking of a traditional ceiling is fundamentally solved.

The invention provides a hydraulic heavy-load sealing leakage rate measuring device and method, and belongs to the technical field of sealing element testing. The device aims at solving the problem that leakage rate measurement is not accurate under the heavy load and high pressure composite working condition. The device comprises a test tool for forming a sealing cavity, a hydraulic system for applying a normal load, a liquid supply system for providing a high-pressure medium, and a measurement module comprising a weighing device. The method comprises the steps of installing a sealing ring, applying a load and supplying a high-pressure medium, then collecting and weighing the mass of the leaked medium by using a weighing device, recording the test duration, and finally calculating the leakage rate according to the mass and the duration. The method can truly simulate harsh working conditions, adopts a mass method for direct measurement, is accurate and reliable in result, and gives consideration to both cost and automation degree.

The invention provides a normal load loading device for a fretting fatigue test, which is used for applying a normal load to a fretting fatigue test piece, and comprises a load loading part, the load loading part comprises a stress ring and bridge type gaskets, at least two bridge type gaskets are oppositely arranged in the stress ring, and the bridge type gaskets are arranged in the stress ring; the bridge type gasket is used for applying a normal load to the opposite surface of the fretting fatigue test piece; the supporting part comprises an arc sliding rail, the arc sliding rail is in sliding connection with the stress ring, and the stress ring is driven to rotate through the arc sliding rail. The bridge type gasket can automatically and symmetrically contact with the two sides of the test piece in the normal load loading process, the test precision and the test efficiency are improved, the centering process with the test piece is simple and convenient during use, and the clamping angle of the test piece is not unique.

The invention relates to a method and a system for testing rolling load performance of a moving surface layer. The method comprises the following steps: fixing a moving surface layer sample to be tested on a test base and determining a rolling test area; a rolling load spectrum comprising a plurality of test periods is constructed, at least one different rolling load parameter is set in different test periods, and the parameters comprise one or more of normal load, contact pressure, rolling speed, reciprocating stroke, rolling path width and cycle index; driving a roller assembly to apply a reciprocating rolling load to the test area according to the load spectrum, and collecting multiple types of test data; performing time synchronization, de-noising and feature extraction on the data to obtain a damage feature set of residual indentation, rigidity attenuation, wear rate, dusting, peeling and the like; generating a rolling load performance score and / or grade determination; and when the two adjacent test periods meet the termination conditions such as the damage threshold, the score threshold or the maximum period number and the like, terminating and outputting a result.

A load adjusting device that can improve the safety of work performed by a work machine. [Solution] The load adjustment device 10 of the present disclosure comprises a load acquisition unit 11 that acquires the bucket load, which is the load of the transported goods in the bucket of the work machine; a determination unit 14 that determines whether the bucket load acquired by the load acquisition unit 11 is equal to or less than a predetermined value; and a bucket angle control unit 15 that, when the determination unit 14 determines that the bucket load exceeds the predetermined value, controls the angle of the bucket to reduce the amount of transported goods in the bucket, thereby making the bucket load equal to or less than the predetermined value, and the predetermined value is set to be equal to or less than the normal load specified for the work machine.

The invention provides a structure buckling, flutter and jump stability test device, and relates to the field of engineering equipment structure static / dynamic comprehensive tests. Comprising a basic test bench, a transmission mechanism and a support are fixedly arranged on the basic test bench, a test unit is arranged on the transmission mechanism, and the test unit is fixed through the support. The test unit comprises a multi-rod beam hinge mechanism (or other forms of connecting beam column structures), one end of the multi-rod beam hinge mechanism is movably connected with a friction roller, and the other end is hinged with a lever loading mechanism; and the friction roller is contacted with the transmission mechanism. According to the invention, through the relative movement generated between the multi-rod beam hinge mechanism (or other forms of connecting beam column structures) and the transmission mechanism, and through the lever loading mechanism, the normal load of the friction roller is regulated and controlled, and deep analysis can be carried out on buckling, fluttering and complex jumping behaviors in the movement process; the technical problem that a static / dynamic comprehensive test and simulation of a high-fidelity engineering equipment structure are difficult to realize in an existing experimental technology device is solved.

This application discloses a method and apparatus for container replica planning. It acquires the fluctuation characteristics of load data for a target service within a preset time period and calculates a buffer coefficient based on these characteristics. The buffer ratio can be adaptively and precisely adjusted according to the fluctuations in actual load data; for example, the buffer ratio is reduced for services with low fluctuations and increased for services with high fluctuations. This allows for pre-planning of an appropriate number of replicas based on the buffer coefficient. Furthermore, it can automatically adjust under both normal load data fluctuations and abnormal traffic surges, demonstrating strong adaptability. The number of replicas is obtained based on the buffer coefficient, pre-acquired load forecast values, and the preset configuration of the target service. This enables dynamic container replica planning, adaptively and precisely controlling the number of container replicas, effectively avoiding resource waste or shortages caused by insufficient or excessive replicas, thus improving resource utilization efficiency and service quality.

The application relates to the technical field of engineering equipment, and discloses a safety protection system for engineering equipment, engineering equipment and a method. The safety protection system comprises a pressure detection module, an angle sensor and an execution module. The pressure detection module is used for detecting the load acting on a telescopic arm. The angle sensor is used for detecting the included angle between an arm support and a horizontal plane. The controller is configured to determine the platform load corresponding to the working platform of the engineering equipment according to the load and the included angle, judge whether the platform load is greater than the rated load, and send a control instruction to the execution module to make the execution module execute preset safety protection measures when the platform load is greater than the rated load. The normal load on the load transmission path is directly measured, the measurement error is reduced, and the measurement precision is effectively improved.

The invention provides an analysis method for vibration wear of a lead-based reactor winding wire positioning fuel assembly, and belongs to the technical field of lead-based fast reactor fuel analys.The analysis method comprises the steps that the normal load between a fuel rod and a winding wire winding the fuel rod, the sliding distance and the stress of the winding wire are obtained; and determining the wear depth of the cladding of the fuel rod according to the normal load, the slippage distance and the stress of the winding wire. The fuel rod cladding wear depth is detected through a numerical simulation method, the blank of a reactor core fuel assembly vibration wear numerical analysis method is filled up, a fuel assembly vibration wear preliminary research means is provided for the initial stage of fast reactor core design, the uncertainty during fast reactor research design and safety analysis is solved, and the method is suitable for mass production. And the research and design efficiency of the lead-based fast reactor core is improved.

The application discloses a high-temperature fretting fatigue test equipment for a plate-shaped sample, which comprises a cyclic load loading device, a normal load loading device, a heating device, a cooling device and a simply supported beam structure device. The high-temperature fretting fatigue test equipment for the plate-shaped sample adjusts a test temperature by controlling the output power of the heating device, avoids the influence of the heating device on a fatigue testing machine when heating by using the cooling device, and thus realizes stable fretting fatigue experiments under a high-temperature environment. Before the fretting fatigue test, the slip amplitude is adjusted according to the mechanical principle, so that different slip amplitudes can be obtained. The fretting pad which can be combined by different line types and the replaceable fretting pad track are used, so that the same fretting pad can be used for multiple times, the influence of track abrasion after the fretting test is reduced through the replaceable fretting pad track, and the accuracy of the test result is ensured.

The embodiment of the application provides a non-uniform load rough structure surface direct shear test method and system, and belongs to the technical field of rock mass mechanics test. The method comprises the following steps: obtaining a joint structure surface grayscale image, and extracting joint profile coordinate data of a joint structure surface profile based on the joint structure surface grayscale image; constructing a three-dimensional entity model of the joint structure surface based on the joint profile coordinate data; placing a rock-like joint structure surface sample constructed based on the three-dimensional entity model of the joint structure surface into a direct shear loading device, and executing shear loading after non-uniform normal load is applied to the rock-like joint structure surface sample, so as to obtain shear response data of the rock-like joint structure surface sample; and analyzing the shear response data to obtain the shear resistance characteristic result of the rock-like joint structure surface sample. According to the application scheme, the shear behavior of the rough joint structure surface under the non-uniform load condition can be quantified, reconstructed and mechanically characterized with spatial resolution.

The invention relates to the technical field of bridges, and discloses a bridge supporting system with filling fluid, which comprises a supporting assembly, a base, a shell fixedly connected in the base, non-Newtonian fluid packaged in the shell, and a sealing plate hermetically inserted in the end part of the shell; the bridge column assembly comprises a column body inserted in the middle of the sealing plate in a sealed mode, a guide rod fixedly connected to the end of the column body and a spring arranged on the side wall of the guide rod in a sleeving mode. The non-Newtonian fluid shock absorber has the beneficial effects that a dual-buffering mechanism is formed by utilizing state changes of non-Newtonian fluid under different external forces and combining elastic buffering of the spring, pressure can be stably dispersed during normal bearing, energy can be rapidly absorbed during sudden strong impact, a bridge structure is effectively protected, the non-Newtonian fluid shock absorber can adapt to stress conditions under different working conditions, and the service life of the non-Newtonian fluid shock absorber is prolonged. No matter normal load change or sudden impact load, effective supporting and buffering can be achieved, and the supporting device is suitable for various bridge scenes.

This invention provides a method and system for predicting the shear strength of a structural surface under non-uniformly distributed loads, belonging to the field of rock mechanics. The method includes: acquiring the surface roughness parameters of the target structural surface and determining the distribution of the non-uniformly distributed normal loads acting on the structural surface and the magnitude of the average normal stress; establishing a shear analysis model of the structural surface and obtaining shear response data of the structural surface under non-uniformly distributed normal loads; determining the peak shear strength and residual shear strength of the structural surface; constructing a shear strength prediction model of the structural surface and outputting the predicted shear strength results of the structural surface based on the shear strength prediction model. This invention achieves a unified characterization of the actual stress state of the structural surface and a highly consistent prediction of shear strength by simultaneously introducing the surface roughness characteristics and the non-uniformly distributed normal load mechanism during the shear strength prediction process.

The invention discloses an on-site large direct shearing device for a rock-soil body containing a fissure surface or a joint surface, and relates to the technical field of rock-soil body direct shearing tests. The device comprises a rock-soil body test pit, an inclined groove is formed in the rock-soil body test pit, a rock-soil body test piece is arranged in the inclined groove, a structural surface is arranged in the rock-soil body test piece, a test piece box is arranged in the inclined groove, and a normal load structure and a shear load structure are arranged in the rock-soil body test pit. Supporting structures are arranged on the normal load structure and the shear load structure, and lifting structures and overturning structures are arranged on the normal load structure and the shear load structure. According to the invention, the equipment is directly erected on site and the test piece is dug, so that the process of carrying the test piece to a laboratory from the site is omitted, disturbance to the test piece caused by bumping, collision and the like in the carrying process is avoided, and multi-angle adjustment can be carried out, so that direct shear tests that a shear surface and a fracture surface intersect at different angles can be carried out; therefore, the anisotropy of the shear strength of the soil body is investigated.

The present disclosure discloses a normal load testing device for a pump body, which includes a fixed platform. A rotating mechanism is provided on the fixed platform, a rotating end of the rotating mechanism is connected to a fixed plate. The normal load testing device further includes: a plurality of connecting heating rings configured to connect the pump body to the fixed plate and heat the pump body; a stabilizing mechanism, configured to strengthen the stability of the pump body and the fixed plate after connection; a sensor, configured to collect test data of the pump body during the test; and a hammering mechanism, configured to excite the pump body from top to bottom. The normal load testing device can simulate the connection form between the pump body and an end cover, and can test a plurality of pump bodies at the same time, thus saving the test time.

The application discloses a malignant load identification method based on load event detection. The method comprises the following steps: extracting power information features of each type of load running alone from electrical data of normal load and malignant load running alone, and establishing a load classification algorithm; detecting load events in real time based on power information features collected by an electric energy meter in real time; the load event detection comprises the following steps: in the process of measuring power information data in real time, whether a load event occurs is determined by comparing whether real-time power information data of a previous period of time and real-time power information data of a next period of time are of the same distribution; extracting power information features with incremental information from power information data of the load event detected in real time; and using the established load classification algorithm to identify and determine malignant load of a newly added load in real time. The malignant load identification method based on load event detection has the advantages of fast response speed, high reliability, accuracy, effectiveness and easy implementation.

The invention discloses an assembly joint surface iwan model modeling method and system based on actual micro-convex body contact force distribution, and belongs to the field of machine manufacturing. The method comprises the following steps: acquiring three-dimensional shape data of a joint surface, fitting micro-convex bodies with anisotropy, and acquiring characteristic parameters of all the micro-convex bodies; based on the characteristic parameters of the micro-convex bodies and the static contact distance between the two surfaces of the joint surface, judging the micro-convex bodies which can be contacted, and calculating static contact parameters of the micro-convex body contact pairs; based on the static contact parameters of the micro-convex body contact pair, a mechanical model of the micro-convex body contact pair is established, and contact point normal loads of the micro-convex body contact pair are calculated respectively; and constructing a joint surface iwan model based on the contact point normal loads of all the micro-convex body contact pairs. According to the method, the iwan model described by critical slip force distribution is constructed through actual surface topography data, the method can dynamically adapt to changes of surface features, mechanical behaviors under complex surface topography and loading conditions are better reflected, and more real mechanical behavior simulation is provided.