718 results about "Mechanical impact" patented technology

The invention provides an anti-interference sound and vibration detection method and device, and relates to the field of sound and vibration detection. The method comprises the following steps: acquiring target special equipment and an equipment type corresponding to the target special equipment; according to the equipment type, acquiring a multi-channel high-sensitivity sensing array combination corresponding to the equipment type from a preset inspection method database; acquiring sound vibration signal data corresponding to the target special equipment based on the multi-channel high-sensitivity sensing array combination; performing modal decomposition on the sound vibration signal data by applying an improved empirical mode decomposition algorithm, eliminating pseudo-modal components and reconstructing effective modal signal data; and inputting the reconstructed effective modal signal data into a sound-vibration collaborative recognition model, and outputting a structural state recognition result of the target special equipment through the sound-vibration collaborative recognition model. According to the method and the device, the problem of low sound vibration detection accuracy of a traditional sound vibration detection technology when mechanical impact, fluid disturbance, electromagnetic interference or multi-source background noise is accompanied in the environment where the detected equipment is located is solved.

The invention provides a copper-steel composite heat pipe and a preparation method thereof, and relates to the technical field of heat pipes, the copper-steel composite heat pipe comprises a steel-copper composite pipe, and the steel-copper composite pipe is composed of a copper inner pipe and a steel outer pipe. An internal copper structure is arranged in the steel-copper composite pipe; the internal copper structure is copper powder or a copper wire mesh. The copper powder is unilateral copper powder or bilateral copper powder or ring copper powder; the copper wire mesh is a copper mesh, or a copper mesh and a copper wire capillary, or a copper wire capillary. The steel outer pipe is made of steel 316L, and the copper inner pipe is made of copper C1020. The copper-steel combined material is used, the cost is saved, and it is guaranteed that materials are saved in the whole heat dissipation field. The double-layer combination of the copper inner pipe (C1020, high heat conduction) and the steel outer pipe (316L, corrosion resistance and high strength) is adopted, the efficient heat conduction of copper is utilized, and the environment erosion resistance and mechanical impact resistance of steel are utilized, so that the heat pipe is adaptive to complex working conditions (such as industrial high-temperature, humid or corrosion risk scenes), and the service life of the heat pipe is prolonged.

The invention discloses a real-time monitoring method for the mechanical damage state of a battery pack in the technical field of new energy automobiles, and the method comprises the steps: arranging an acceleration sensor on a bottom plate of the battery pack, combining a preset algorithm analysis technology, achieving the precise diagnosis of the health state of the battery pack after vibration impact, and improving the reliability of the battery pack. An alarm can be given in time when a potential fault is detected; acceleration response data of each sensor is continuously acquired according to a data acquisition module and is transmitted to a processing unit, and the processing unit quickly determines the specific impacted position of the bottom plate by using a built-in impact position positioning algorithm and predicts the overall vibration response of the bottom plate through a vibration response prediction algorithm. And calculating the magnitude of the mechanical shock excitation on the bottom plate, and comparing the predicted overall vibration response of the bottom plate and the mechanical shock excitation on the bottom plate with a preset threshold value. If any abnormity is found, an alarm device is triggered immediately, and a driver or a vehicle management system is notified to take corresponding measures.

The invention relates to a device for continuously sorting a particulate stream, comprising: a) a conveyor (1) for conveying the particulate stream to a separation device, b) a sieve (7) for separating the particulate stream according to size, characterized in that it further comprises c) a per-sieve (3) comprising elongated sieve openings located between the convey or outlet and the sieve d) and a mechanical impact device for providing mechanical impacts to the pre-sieve (3). The pre-sieve allows to separate elongated objects like threads or wires form the particulate stream which would otherwise clog or block subsequent separation devices including the sieve.

The invention discloses a light impact-resistant battery protection shell quality detection device, and particularly relates to the technical field of battery protection shells. The light impact-resistant battery protection shell quality detection device comprises a rack, a second motor is arranged on the outer wall of the rack, a first bevel gear is fixedly connected to the outer wall of a first transmission rod, and a connecting rod is fixedly connected to the inner wall of the second bevel gear; the outer wall of the first threaded rod is in threaded connection with a threaded sleeve, and the outer wall of the first bevel gear is in engaged connection with a third bevel gear. According to the quality detection device for the light impact-resistant battery protection shell, through the arrangement of a first bevel gear, a threaded sleeve, a driver and a protection shell, a worker can conveniently and synchronously detect extrusion and mechanical impact of the battery protection shell, and the efficiency of detecting the quality of the battery protection shell by the worker is improved; and meanwhile, the deviation of the battery protection shell during quality detection is prevented, so that the accuracy of the quality detection of the battery protection shell by the detection device is guaranteed.

The invention provides a high-speed submerging jet flow and mechanical shock synergistic ice damage test method. The method comprises the following test steps: S1, arranging a data acquisition system; s2, initializing working conditions; s3, preparing an ice body sample; s4, prefabricating ice body damage by high-pressure water jet; s5, a servo electric cylinder drives a mechanical structure to impact ice damage; s6, data acquisition; and S7, data processing. According to the invention, the force sensor, the laser displacement sensor and the high-speed camera synchronously collect the load, deformation and image information of ice damage caused by impact of a mechanical structure by means of the servo electric cylinder under the jet-assisted effect, so that accurate control and synchronous measurement of submerged jet and mechanical cooperative damage are realized; the impact of different mechanical structures at different speeds on the ice damage load is avoided.

The invention belongs to the technical field of intelligent belt conveyors, discloses a braking method for a downward belt conveyor, computer equipment and a storage medium, and aims to realize accurate application of braking torque, guarantee safe and reliable braking and stopping of the downward belt conveyor and avoid mechanical impact and electrical impact on the belt conveyor. The braking method of the downward conveying belt conveyor serves as an important component of the intelligent belt conveyor, is applied to the downward conveying belt conveyor and can accurately judge the magnitude of the braking torque needed by the belt conveyor during emergency stop braking, so that the real-time braking torque is matched with the theoretical braking torque, accurate application of the braking torque is achieved, and the braking efficiency of the belt conveyor is improved. By means of the braking device, safe and reliable braking and stopping of the downward conveying belt conveyor are guaranteed, when a main motor is cut off in emergency stopping, mechanical impact and electrical impact on the belt conveyor caused by too large braking torque are avoided, the galloping accident caused by too small braking torque is also avoided, and therefore the operation and maintenance cost of the downward conveying belt conveyor is reduced.

The invention provides a sound feedback structure at the end of injection of an injection pen, which comprises a shell and a movable dose display element, and the shell is divided into a near end and a far end; a fixing assembly is arranged at the far-body end of the shell, and the dose display element is connected with the shell through a threaded structure and moves in the axial direction to indicate the dose during injection; when the injection is finished, the dose display element and the fixing component interact to generate mechanical impact sound to prompt the user that the operation is finished; the mechanical impact sound is achieved through deformation energy storage and release of the elastic component, and the volume of the impact sound can be adjusted through the deformation distance.

The invention discloses a method for reducing the mechanical impact load of a steering system. The method comprises the steps that S1, the motor rotor acceleration torque Ta of the steering system is monitored and calculated in real time; s2, judging whether the acceleration torque Ta of the motor rotor meets a preset condition or not; if a preset condition is met, entering the step S3, otherwise, returning to the step S1; step S3, outputting a target torque request TRML; the value of the target torque request TRML is determined according to an expected minimum target level lambda for reducing the external impact load and an external impact load value; the direction of the target torque request TRML is the same as the direction of the motor rotor speed n. Impact damage of external impact loads to the steering system and an internal key part worm gear under the special driving working condition can be reduced, the service life of the worm gear is guaranteed and even prolonged, the reliability of the steering system is improved, and the noise vibration performance of the steering system and the hand feeling of a driver are improved.

The invention provides an array jet flow and mechanical shock synergistic efficient controllable ice damage method which comprises the following steps: S1, moving to an ice damage target position, and defining an ice damage target range; s2, adjusting the position of a high-pressure jet array and a mechanical impact point according to the ice damage range; s3, the ice material is subjected to continuous impact melting corrosion through a high-pressure jet array, and jet defects distributed in an array mode are manufactured; s4, mechanical impact acts on the target area of the ice material, radial cracks radiating outwards are generated, the radial cracks are connected with the multiple jet flow defects and guide the multiple jet flow defects to generate annular crack communication, and bending failure of the ice material is accelerated; s5, the crushing degree of the ice material in the target range is checked, and if the ice material is not crushed completely, the step S4 is repeated; and S6, the mobile platform continuously works, and the step S1 to the step S5 are repeated. According to the method, the damage range and the ice damage degree of the ice material can be accurately controlled by means of the annular cracks generated by the jet damage cooperating with the mechanical impact effect, and accurate ice breaking is achieved.

The invention discloses a damping unit, a shoe sole and a design method thereof, and relates to the technical field of shoe sole damping, a quasi-zero stiffness module comprises two cross arms and four inclined arms which are symmetrically arranged up and down, two energy storage arms are arranged between the two cross arms, two ends of the two energy storage arms are fixedly connected with the inner sides of two ends of the two cross arms respectively, and the two ends of the two energy storage arms are fixedly connected with the inner sides of two ends of the two cross arms respectively. The two energy storage arms are arranged in an X shape; the bistable module comprises a convex module and a concave module which are symmetrically arranged on the two sides of the quasi-zero stiffness module, the convex module comprises a first connecting arm and a convex block arranged in the middle of the bottom of the first connecting arm, and one end of the first connecting arm is fixedly connected with the joint of the two oblique arms; the concave module comprises a second connecting arm and a concave block arranged in the middle of the top of the second connecting arm, and the convex block is matched with the concave block in an embedded mode. The quasi-zero stiffness module is used for reducing sole vibration during movement, and the bistable module is used for storing mechanical impact energy for impacting large deformation, so that a wearer is protected from being injured by sudden impact.

The invention provides an in-vehicle acoustic enhancement method and device fusing determinacy-randomness hybrid modeling, and the method comprises the steps: collecting a fitted vehicle acceleration sound sample, extracting audio data, carrying out the analysis, constructing a determinacy component synthesis algorithm, and associating with a vehicle working condition; the method comprises the following steps: constructing a multi-physics-field coupled random noise generation module, wherein the multi-physics-field coupled random noise generation module comprises an aerodynamic noise module for simulating air inlet turbulence, a low-frequency pulse module for representing mechanical shock, a detonation module for simulating combustion uncertainty and a nonlinear distortion module for enhancing exhaust roughness and generating high-order harmonics; each random noise generation module is matched with the deterministic component, and mixing of the deterministic component and the random component is realized through weight adjustment; details are enhanced through dynamic compression, and target sound waves are generated; through collaborative optimization of determinacy-randomness components, the naturalness and brand identification degree of synthetic sound waves are improved, the vehicle working condition and driving information can be converted into perceptible sound effect characteristics, and the problem of information perception simplification in the electric vehicle driving process is solved.

The invention belongs to the technical field of impact fatigue tests of metal materials, and relates to an impact fatigue test system for simulating a working condition environment of a gun firing pin, which can perform high-frequency cyclic loading of 200MPa-500MPa, microsecond (mu s) level impact pulse and more than kilohertz (kHz), and synchronously simulate the working condition environment. High-energy, high-frequency and short-pulse impact loading under the gun and gun firing pin working condition is carried out through the high-frequency impact generation subsystem, and the dynamic mechanical environment in actual service is effectively simulated; the environment simulation subsystem is used for accurately controlling the temperature, the concentration and the pH value of media such as salt mist and seawater, and is synchronously coupled with mechanical shock, so that mechanical-electrochemical synergistic damage conditions are truly represented; dynamic stress, strain, electrochemical parameters and surface topography in the impact process are synchronously monitored through a multi-parameter synchronous acquisition subsystem, and complete data support is provided for researching the damage evolution law of a material under a complex load; the repeatability and the safety of the test are ensured through the modularized sample clamp subsystem and the dynamic sealing design.

The invention relates to the field of aviation equipment, in particular to the technical field of sound absorption composite structures for noise control of aero-engines. The sound absorption and noise reduction composite structure of the aero-engine comprises a back plate (1); the honeycomb core (2) is different from a traditional regular hexagonal honeycomb core and is composed of semi-concave hexagonal honeycombs. The position, close to the back plate, of the honeycomb core is filled with porous sound absorption material graphene sponge, three-section equal-height filling is carried out according to density gradient change, and the filling height of each section is one fourth of the height of the honeycomb core; and the perforated plate (4) is bonded with the honeycomb core through an adhesive film. The problems that a traditional regular hexagonal honeycomb core is prone to saddle type deformation during curved surface integral forming, so that the honeycomb core deforms, and the mechanical impact resistance is poor are solved and improved, and meanwhile the sound absorption performance of the composite structure is further improved through the porous sound absorption materials filled in the honeycomb core in a gradient mode; and the sound absorption and noise reduction frequency band width of the whole composite structure is expanded.

The invention relates to a motion control method and equipment of crawler loader equipment and a storage medium, the crawler loader equipment comprises a crawler loader, a hydraulic driving module and a sensor, the hydraulic driving module is connected to the crawler loader, the sensor is arranged on the crawler loader, and the method comprises the steps that the motion state, detected by the sensor, of the crawler loader is obtained; when the motion state reaches a preset first threshold value, an instruction for supplying oil to the hydraulic driving module at a first speed is triggered; and when the motion state reaches a preset second threshold value, an instruction for stopping oil supply to the hydraulic driving module is triggered. When the motion state of the slagging-off machine meets the requirement, the oil supply speed can be reduced or oil supply can be stopped, then the vibration amplitude of the slagging-off machine in the working process is reduced, the situation that mechanical parts and a hydraulic system of the slagging-off machine are damaged due to violent mechanical impact generated by sudden stopping of the slagging-off machine is avoided, the replacement frequency of quick-wear parts in the slagging-off machine is reduced, and the service life of the slagging-off machine is prolonged. And the overall service life of the crawler loader equipment is prolonged.

The invention relates to the technical field of building repairing materials, and particularly discloses an anti-impact and wear-resistant repairing material and a preparation method thereof.By optimizing the content of all the components of the raw materials, the prepared repairing material has excellent anti-erosion performance and wear-resistant performance, Portland cement serves as a main cementing material, and the anti-impact and wear-resistant performance of the repairing material is improved; basic strength and cohesiveness are provided; fly ash and silicon powder synergistically enhance compactness and durability; quartz sand is used as wear-resistant aggregate, so that the compression resistance and the wear resistance are improved; the toughness and the impact resistance are enhanced by the composite modified carbon fibers; the redispersible latex powder improves the flexibility and the binding power; the polycarboxylate superplasticizer optimizes the flowability and improves the compactness; and the defoaming agent reduces pore defects and ensures material uniformity. The repair material provided by the invention is suitable for repair engineering needing to bear mechanical shock or wear environment, and has good construction performance.

The present disclosure refers to a method for detecting and evaluating a mechanical impact on a battery pack in an at least partially electric vehicle, wherein the battery pack is disposed on an underbody of the vehicle. The method includes a step of detecting first condition data determining an underbody impact using a first sensor. Further, the underbody impact is determined based on the detected first condition data. Afterwards, a degree of severity, comprising a plurality of levels, of the underbody impact is determined based on second condition data characterizing a severity of the underbody impact detected using a second sensor. Furthermore, an output is determined based on the determined degree of severity. The invention further relates to a battery system including a battery pack, wherein the battery pack is disposable on an underbody of an at least partially electric vehicle, comprising at least one battery cell, a first sensor and a second sensor and / or a communication interface for detecting and / or obtaining first and second condition data, and a control unit being configured for performing the disclosed method, and to an electric vehicle comprising the battery system according to the invention.

The invention provides a large-diameter vibration reduction circular seam type pressure regulating valve device for a sub-span-supersonic wind tunnel and a using method, the large-diameter vibration reduction circular seam type pressure regulating valve device comprises an outer conical cylinder, an air inlet grille is arranged at an air inlet of the outer conical cylinder, and the outer conical cylinder and an inner conical cylinder form a circulation area; an inlet of the pressure regulating molded surface cone is connected with the outer cone cylinder, and the inner molded surface of the pressure regulating molded surface cone is an arc surface and a multi-section index combined molded surface; a piston is arranged between the inner cone cylinder and the pressure regulating profile cone, a main seal and an auxiliary seal are arranged at the end of the piston, and the piston is in sliding connection with the inner cone cylinder through a servo driving device. A plurality of diagonal draw bars are arranged between the servo driving device and the piston, the two ends of each diagonal draw bar are hinged to the servo driving device and the piston respectively, and the two ends of the shock absorber are hinged between the diagonal draw bars and the servo driving device respectively. According to different wind tunnel experiment requirements, pressure distribution of a flow field can be accurately adjusted, mechanical impact and noise of the valve can be effectively reduced, and vibration generated by rapid movement is relieved through coupling between the damping device and the diagonal draw bar.

The invention discloses a forging die for suspension clamp preparation, and relates to the technical field of suspension clamp forging dies, the forging die comprises an upper die, a lower die and a guide pillar guide limiting structure arranged between the upper die and the lower die; the upper die comprises an upper die base and a male die fixed below the upper die base. The lower mold comprises a lower mold base, a female mold and an ejection mechanism, the female mold is fixed on the lower mold base, a mold cavity of the female mold is matched with the male mold core, and the ejection mechanism is an automatic demolding mechanism with an energy storage impact function and comprises a lifting assembly, an ejection rod, a positioning assembly, a transmission assembly and an unlocking assembly. The problem that in the prior art, when a suspension clamp is forged, constant ejection force cannot overcome increased demolding resistance caused by product cooling shrinkage, static friction and vacuum adsorption jointly is solved. The energy storage impact type ejection mechanism has the advantages that instant mechanical impact can be automatically applied to damage vacuum adsorption and static friction force when a product is stuck in a mold, demolding is facilitated, and the like.

The invention discloses an electronic cam control method, system and device and a readable storage medium, and the method comprises the steps: responding to the modification of an end point key point of a current operation section of an initial cam table, and determining a cam curve equation of the current operation section; determining transition key points according to the cam curve equation; and updating the end point key point of the current operation section of the initial cam table to the modified key point, and inserting the transition key point between the starting point key point of the current operation section and the modified key point to obtain a new cam table and operate the new cam table. According to the invention, large-amplitude position adjustment of the slave shaft in a short time can be avoided, so that position step and mechanical impact are avoided, the smoothness and continuity of motion of the slave shaft are improved, and the processing efficiency in a continuous processing scene is improved.

The invention belongs to the technical field of ship equipment, and discloses a wave suppression device and a ship. The wave suppression device comprises a hinge four-bar mechanism, a spoiler sheet and a rotary driving part, and the rotary driving part drives the spoiler sheet to rotate through the hinge four-bar mechanism, so that the spoiler sheet has a working position extending into water. The rotary driving part is arranged above the water surface, and the sealing surface of the rotary driving part is separated from the seawater environment, so that the possibility that marine organisms are attached to the sealing surface of the rotary driving part is fundamentally avoided, and the maintenance frequency and the environmental protection risk are remarkably reduced. Besides, the rotary driving part is far away from a seawater corrosion environment and does not need to bear underwater pressure, so that the failure probability of the sealing part caused by seawater corrosion or mechanical shock is reduced, the working stability of the driving system is improved, and the service life of the driving system is prolonged.

The invention provides a thermal-compression-shear coupling effect-based explosive charging reaction threshold value measuring device, which comprises a sleeve, the sleeve comprises a cylindrical sleeve body, and the sleeve body is internally and coaxially provided with an axially through sleeve center cylindrical cavity; a lower striking column, a grain bottom isolation plastic pad, a grain circumferential isolation plastic ring, a compression-shear conversion rubber pad and an upper striking column are sequentially and coaxially arranged in the cylindrical cavity in the center of the sleeve from bottom to top in the axial direction. An explosive column is further coaxially arranged in the explosive column circumferential isolation plastic ring, the axial length of the explosive column is equal to the axial length of the explosive column circumferential isolation plastic ring, and the diameter of the explosive column is equal to the inner diameter of the explosive column circumferential isolation plastic ring. The sleeve body is further provided with a sleeve thermocouple, and the sleeve body is further coaxially sleeved with an annular heating sleeve. According to the device, the reaction threshold value of the explosive charge under the heat-pressure-shear coupling effect can be obtained, and the amplitudes of the heat load and the mechanical impact load borne by the explosive charge can be quantitatively adjusted.

The invention relates to the technical field of rotary presses, provides a rotary press blanket cylinder pressure adjusting mechanism and method, and aims to solve the problems that a traditional press blanket cylinder is inconvenient in pressure adjustment, unstable in printing quality and the like. The mechanism comprises an air cylinder, a transmission operation clutch pressing shaft, a backer, a positioning rod, a digital hand wheel, a bent lever, an eccentric swing rod, an eccentric sleeve, a blanket cylinder and other key components. Power is provided through the air cylinder and the transmission operation clutch pressing shaft, and pressing-on and pressing-off operation is achieved. The distance between the blanket cylinders is accurately controlled through linkage of the positioning rod and the digital hand wheel, and dynamic pressure adjustment is achieved; the synergistic effect of the curved bar and the eccentric sleeve ensures stable movement of the roller and reduces mechanical impact. In addition, a rubber blanket tensioning mechanism is further arranged, the design of a rubber cylinder neutral position opening is optimized, and the printing quality and stability are further improved. Through high integration of mechanical innovation and dynamic control, breakthrough improvement is achieved in the aspects of printing precision, stability, energy consumption control and the like.

The simulation method for the mechanical impact test of the battery comprises the following steps: respectively carrying out tensile test on a sample piece of a preset positive plate, a sample piece of a preset negative plate, a sample piece of a preset diaphragm and a sample piece of a preset shell to obtain corresponding mechanical data; and / or respectively carrying out compression test on the components to obtain corresponding mechanical data; according to the material parameters and the mechanical data corresponding to the preset positive plate, the preset negative plate, the preset diaphragm and the preset shell, constructing a battery model; an impact process model is constructed according to the preset impact condition, an impact simulation test is conducted on a battery model corresponding to the preset battery through the impact process model, a simulation test result is obtained, and the simulation test result comprises energy data corresponding to the preset positive plate, the preset negative plate, the preset diaphragm and the preset shell. And performing an impact simulation test on the battery model by using the impact process model, so that the energy change of the preset positive and negative plates, the diaphragm and the shell in the impact process can be quantified.

The invention relates to the technical field of power line unmanned aerial vehicle deicing, in particular to a power line unmanned aerial vehicle deicer which comprises a deicing seat assembly arranged below an unmanned aerial vehicle body, a clamping groove is formed in the middle of the deicing seat assembly, and clamping assemblies are symmetrically arranged on the two sides of the clamping groove. An advancing assembly is arranged at the front end in the deicing seat assembly in the deicing advancing direction and used for driving the deicing seat assembly to advance in the electric power circuit deicing direction, an ice breaking assembly is arranged at the position, located at the rear end of the advancing assembly, in the deicing seat assembly, and the ice breaking assembly is driven by advancing of the advancing assembly to break an ice layer on an electric power circuit. And a spraying assembly is arranged at the rear end of the ice breaking assembly in the deicing seat assembly, and is used for continuously spraying a deicing agent to the power line through which the advancing assembly and the ice breaking assembly pass. According to the method, a three-stage icebreaking synergistic mechanism is adopted, wherein the three-stage icebreaking synergistic mechanism comprises the steps of preposed cone thorn presplitting, high-frequency mechanical impact and fixed-point permeation spraying, so that a synergistic deicing path of crack propagation, brittle breaking and medicament permeation is formed.

The invention is suitable for the field of photovoltaic technology, and provides a solar cell and a cell module. The pyramid structure is arranged on the surface of the silicon substrate; the passivation layer is arranged on the surface of the pyramid structure, the thickness of the passivation layer on the inclined plane of the pyramid structure is a first thickness, the thickness of the passivation layer on the top end of the pyramid structure is a second thickness, and the second thickness is greater than the first thickness. According to the manufacturing method, the sharp defects at the top end of the pyramid structure are eliminated, the situation that cracks are likely to occur at the sharp defects when the photovoltaic cell is subjected to mechanical impact and vibration is avoided, the mechanical load bending strength of the manufactured photovoltaic cell is improved, and the risk that the photovoltaic cell cracks is reduced.

The invention relates to a material dynamic mechanical property testing technology, in particular to an impact mechanical loading device and method based on a locked-rotor test of an electromagnetic coil emitter, and the device comprises a pulse power supply module, an electromagnetic loading module, a constraint fixing module and a measurement and control system. Capacitor charging voltage is set through an upper computer, a control switch is switched on to discharge an electromagnetic loading module to generate pulse current, and an electromagnetic coil generates a pulse magnetic field to enable a conductor armature to induce eddy current to generate axial electromagnetic force; the position of the armature is rigidly restrained to form locked rotor, impact electromagnetic force is directly loaded to a sample through an impact head to form impact stress, and dynamic response, fatigue damage and aging accumulation experiments of materials are carried out by monitoring the working performance of a monitoring device such as voltage, current and impact force. The device has the advantages of being small in size, flexible and adjustable in impact stress wavelength and amplitude, high in efficiency and the like, and the problems that a traditional mechanical impact device is large in size, the impact stress pulse width is not easy to regulate and control, and the test efficiency is low are solved.

The invention provides an impact table top optimization method and device based on multi-physics field coupling and a storage medium, and belongs to the technical field of mechanical impact simulation. According to the scheme, an impact table top is modeled, a large number of finite element models are randomly constructed according to a modeled structure model, and the impact table top is optimized; the model simulation system is used for carrying out analogue simulation on each finite element model, and the finite element model with the highest fitness is determined, so that the impact table top can be optimized according to table top parameters corresponding to the finite element models, and the performance requirements of light weight, high fundamental frequency and high strength / rigidity can be met at the same time; therefore, the impact table board can be in an extreme dynamic environment with high energy, transient impact and broadband excitation.

The invention provides a material mechanics impact resistance experiment device, and relates to the technical field of mechanical impact, the material mechanics impact resistance experiment device comprises a base and a falling mechanism for suspending an impactor, the falling mechanism is mounted on the base, two groups of first sliding blocks relatively sliding on the base are arranged on the base, and first fixing rods are mounted on the two groups of first sliding blocks; the two groups of first sliding blocks slide relatively to clamp an object through the first fixing rod and suspend the object, and the falling mechanism can release an impact object to impact the object; when the impact test device is used, a tested material can be prevented from being supported and buffered at the moment of impact, so that the impacted material can directly bear all impact forces, and the accuracy of a test result is improved.

The utility model discloses a mechanical shock resistance testing machine for a cable, which comprises a servo motor speed reducer module, a steel wire rope, a linear guide rail, an electric magnet, a counterweight mounting plate sliding table, a counterweight block, a tested cable placement sliding block, a laser displacement sensor, an electric cylinder, a tested cable sample and a withstand voltage tester, the device can be matched with impact hammers of various weights and various free falling body heights, and meets different requirements for mechanical impact resistance in the cable research and development process, so that reliable data is better provided for cable design and manufacturing. According to the utility model, the structure is simple, the cable is in a static state in the use process, the single cable can be tested for multiple times through program setting, and the mechanical shock resistance parameter data of different positions, different heights and different counterweights can be repeatedly tested for multiple times for each cable, so that the contingency existing in the single test is eliminated.