23 results about "Crash simulation" patented technology

The invention provides a rail vehicle collision test system, which relates to the technical field of rail vehicle collision tests and comprises a collision simulation device, a wall body, a test vehicle body and a data acquisition device. The test vehicle body is configured to move towards the wall body at a preset speed, and dummy passengers are carried in the test vehicle body. The collision simulation device comprises an energy absorption assembly and an adjusting assembly, the energy absorption assembly is installed on the wall and suitable for colliding with the test vehicle body, and the adjusting assembly is configured to respond to the crumple amount of the energy absorption assembly in the collision process and adjust the counter-acting force applied by the energy absorption assembly to the test vehicle body so as to simulate the collision process of the real vehicle with the energy absorption structure. The data acquisition device is arranged on the dummy passenger and is suitable for acquiring data information of secondary collision of the dummy passenger in the test vehicle body.

The utility model discloses a comprehensive alarm performance testing device, which belongs to the field of alarm testing and comprises a base station. The base station is provided with an impact sensitivity testing mechanism used for adjusting the simulation impact strength and testing the sensitivity of the impact alarm. An impact material replacing mechanism for automatically replacing an impact material is mounted on the base station; the collision sensitivity testing mechanism comprises a collision simulation assembly, a force storage assembly, a rotating rod limiting assembly and a collision force adjusting assembly; the base table, the force storage assembly, the rotating rod limiting assembly and the collision force adjusting assembly are all connected with the collision simulation assembly; the force storage assembly and the rotating rod limiting assembly are both connected with the base table. Through the above mode, different forces can be rapidly adjusted to simulate the reliability of the collision alarm, and the time consumed by manual mounting and dismounting of the loading block is reduced.

The utility model relates to the field of automobile safety engineering, in particular to a collision simulation test device for an automobile anti-collision beam. The utility model provides a collision simulation test device for an automobile anti-collision beam, which can conveniently adjust the horizontal angle and the inclination angle of a collision block and can conveniently evaluate the safety performance of an automobile under different collision conditions. An automobile anti-collision beam collision simulation test device comprises a bottom frame, supporting frames, supporting rods and the like, the front supporting frame and the rear supporting frame are connected to the upper side of the right portion of the bottom frame, and the multiple supporting rods are connected to the upper side of the middle of the bottom frame. A double-shaft motor is started to drive a moving wheel to rotate, so that an impact block moves, the horizontal angle of the impact block is adjusted, then a first air cylinder is started to drive a supporting plate to rotate upwards, a rotating block and a connecting piece rotate, and the inclination angle of the impact block is adjusted; and the effects that the horizontal angle and the inclination angle of the collision block can be conveniently adjusted, and the safety performance of the vehicle under different collision conditions can be conveniently evaluated are achieved.

This invention discloses a testing method, testing device, computer program product, and storage medium for airbag deployment control. The method includes: acquiring test items, which at least include test fault items and vehicle collision types; the test fault items at least include a target fault sensor, sensor fault type, and fault duration; based on the test fault items, inputting a fault simulation signal corresponding to the test fault item to the airbag control system; based on the vehicle collision type, inputting a collision simulation signal corresponding to the vehicle collision type to the airbag control system; detecting the output control signal of the airbag control system within a preset test duration, where the preset test duration is greater than the fault duration setting; and generating test results for the airbag control system based on the output control signal. This invention solves the technical problems of limitations, high testing costs, and long testing cycles in related airbag deployment control system testing methods.

A collision simulation test apparatus including a table to which a test piece is to be attached, the table being movable in a predetermined direction, a toothed belt for transmitting power to drive the table, a drive module capable of driving the toothed belt, and a control part capable of controlling the drive module. The control part is capable of controlling the drive module to generate an impact to be applied to the test piece, and the impact generated by the drive module is transmitted to the table by the toothed belt.

The invention discloses an electric drive collision simulation test system, which belongs to the field of collision simulation and comprises an electric drive force subsystem, a collision simulation subsystem and a control test subsystem. The electric driving force subsystem provides power required by acceleration and braking of the test trolley in the collision simulation test, and comprises a high-thrust linear motor, a high-power pulse energy storage device, a pulse discharge power supply device and a charging device; the collision simulation subsystem provides an acceleration track and a mounting platform required by collision simulation, and comprises the acceleration track, a test trolley and an anti-collision device; and the control test subsystem realizes a man-machine interface required by system control, monitors the system state in real time, records test process data and automatically analyzes and issues a test report, and comprises a measurement and control table, high-speed data acquisition equipment and lighting equipment. The electromagnetic force driving technology route is adopted, and the device has the advantages of being continuous and adjustable in load, accurate and controllable in any test waveform, small in installation occupied area, low in use and maintenance cost and high in intelligent level.

The embodiment of the utility model provides a ground simulation device and test equipment, and the ground simulation device comprises a base station which is used for being arranged on a supporting surface; the first belt wheel and the second belt wheel are rotationally connected with the base table; the synchronous belt is arranged on the first belt wheel and the second belt wheel in a sleeving mode, the synchronous belt is provided with a supporting face, and the supporting face is used for supporting a tire with a hub motor; the protruding block is installed on the synchronous belt and protrudes relative to the supporting face. Through the arrangement, on one hand, a large-area test site and a large amount of human input are not needed, on the other hand, the repeatability of ground test simulation through the synchronous belt is good, test standardization and normalization are facilitated, the test efficiency is improved, the test cost is reduced, meanwhile, the protruding blocks protruding relative to the supporting face are arranged on the synchronous belt, and the test efficiency is improved. In the testing process, the protruding blocks can collide with the tire, bumping of ground driving is simulated, and the reliability of testing is further improved.

The invention provides an automobile door lock system side collision safety simulation method and computer equipment. The method comprises the following steps that a door lock system finite element model is built; establishing an assembly constraint relation of all parts in the model; defining the material attribute of each part in the model; defining a force value output item of the door lock system, wherein the force value output item comprises contact section force data between the latch hook and the surrounding direct contact part and section force data of the latch hook; building a side impact whole vehicle model based on the door lock system finite element model; a collision simulation load is applied to the side collision whole vehicle model for collision testing, and a contact section force value between the latch hook and the surrounding direct contact part and a section force value of the latch hook are obtained through analysis. According to the method, the interaction force between the automobile door lock and the lock hook system in the side collision process can be dynamically simulated, the standard for evaluating the safety performance of the automobile door lock system is formulated, and the failure risk of the automobile door lock and the lock hook system can be quantitatively evaluated in the product development stage.

This invention provides a simulation method for vehicle headlight safety and a mounting leg for the headlight. The simulation method includes: acquiring a headlight model and applying vehicle mounting constraints to the headlight mounting leg; performing collision simulation and vibration simulation on the headlight model to obtain a first simulation result and a second simulation result respectively; comparing the first simulation result and the second simulation result with qualification conditions; if both meet the qualification conditions, the current headlight model is determined to meet the mold opening conditions; if any simulation result does not meet the qualification conditions, the headlight model is iteratively optimized until the preset qualification conditions are met; the headlight model that meets the preset qualification conditions is handed over for mold opening. The technical problem solved by this invention is that in the prior art, the design of headlight mounting legs requires repeated balancing between vibration intensity and pedestrian collision protection. In traditional design methods, after the headlight product structure is designed, mold making and physical assembly are required, which necessitates repeated testing and mold adjustments, increasing R&D costs and extending the project cycle.

Systems and methods are provided for vehicle braking, collision, or braking and collision simulations. The systems include a seat platform configured to be secured within a vehicle such that the seat platform is located on or above a seat of the vehicle, the seat platform configured to be controllably displaced relative to the vehicle seat in at least a forward direction towards the front of the vehicle while having a passenger disposed on the seat platform during a deceleration simulation that includes displacing the seat platform having the passenger disposed thereon from an initial position toward the front of the vehicle, one or more sensors configured to gather sensor data indicative of spatial characteristics of the passenger during the deceleration simulation, wherein at least one of the sensors is a sensor of the vehicle.

The present application relates to the technical fields of train experiment simulation, in particular to a train collision simulation model device and a display system thereof, the emergency stop assembly comprises a lower frame and a side frame, the upper end of the lower frame is fixed at the lower end of the train model, the middle section of the lower frame vertically extends to the lower end of the upper display stand along the through long groove, the lower end of the lower frame is provided with the side frame on both sides, the side frame is provided with a fixedly-installed gear ring, the upper end of the gear ring is opposite to the toothed plate, beneficial effects are that: a pair of side frames with gear rings are arranged at the lower end of the existing train model, when the train model collides with the simulation wall to generate inertial impact, the front end of the train model is deformed and slows down, the rear end of the train model is raised, the gear ring is clamped on the toothed plate, the purpose of sufficient clamping and limiting is achieved, deformation and pulling caused by friction are avoided, and the gear ring at the lower end is not damaged under strong inertial impact, so that the purpose of preventing the train model from falling off is achieved.

This invention proposes a method for optimizing pressure relief support under the influence of local weakening in hard rock mining sections. Belonging to the field of rock mining technology, it aims to solve problems such as the imbalance between rigidity and flexibility in traditional support systems, lack of optimization in matching weakening and support parameters, and delayed judgment of support intervention timing. The method includes: constructing a three-dimensional discrete element model based on a physics engine; collecting rock mass mechanical parameters; designing and optimizing local weakening schemes based on motion simulation; simulating rock block movement to determine support timing; conducting collision simulations to optimize support parameters; integrating the results to form a construction plan and dynamically verifying it. This method optimizes parameters and timing through precise simulation analysis, reduces the risk of safety accidents, improves support effectiveness and construction efficiency, and achieves dynamic management of mining operations.

The utility model relates to the technical field of automobile testing, and discloses an instrument desk collision simulation tool rack mounting structure, which comprises a bottom frame, a front supporting rod and a rear supporting rod, a mounting frame is fixedly mounted at one end, far away from the front supporting rod and the rear supporting rod, of the bottom frame, and a balancing weight is placed at the inner edge of the mounting frame. A top frame assembly is fixedly installed at the end, away from the bottom frame, of the rear supporting rod and comprises a first fixing rod, a first connecting rod and second connecting rods are fixedly installed at one end of the first fixing rod, and a second fixing rod is fixedly installed between the second connecting rods. According to the instrument desk collision simulation tool frame installation structure, through the design of the second reserved groove, the front supporting rod, the rear supporting rod, the multiple connecting bolts and the multiple positioning bolts, the whole tool can be rapidly installed, different parts can be selected and replaced according to the actual situation, an alignment structure is not designed, when fixing is conducted, dislocation is likely to happen, and the installation efficiency is improved. Therefore, the installation steps are tedious, and popularization and use are not convenient.

The application relates to the technical field of safety control of fall arresters, and relates to a fall arrester safety control method and system based on collision self-checking and multi-direction locking, which comprises the following steps: extracting target fall arresters from a target fall arrester set in sequence, and performing the following operations on the extracted target fall arresters: performing collision simulation detection on the target fall arresters to obtain collision simulation data, obtaining an acceleration dynamic threshold value, obtaining an acoustic emission dynamic threshold value, if the acceleration dynamic threshold value is greater than a preset standard acceleration threshold value, taking the acceleration dynamic threshold value as an overrun acceleration threshold value, if the acoustic emission dynamic threshold value is greater than a preset standard acoustic emission threshold value, issuing a collision alarm signal, performing a locking operation on the target fall arrester to obtain a locked fall arrester, and completing the fall arrester safety control based on collision self-checking and multi-direction locking based on the locked fall arrester set. The application can improve the safety and reliability of the fall arrester.

The utility model relates to the technical field of detection tools, and discloses a new energy automobile power battery pack stiffening beam anti-collision performance detection mechanism which comprises a rack, a tension meter is arranged on an upper cross beam of the rack, a clamping jaw is arranged on each of the tension meter and a bottom plate of the rack, and the two clamping jaws clamp the two ends of an anti-collision beam; a transverse notch, a vertical notch and an inclined notch are respectively formed in a clamping block of the clamping jaw, a strain gauge is pasted on the anti-collision beam, and the strain gauge is connected with a Wheatstone bridge circuit board; the Wheatstone bridge circuit board is installed on the front face of the rack and covered with the protective cover. The Wheatstone bridge circuit board is electrically connected with the voltmeter, and the voltmeter is installed on the rack; an impact structure facing the anti-collision beam is installed on the machine frame. According to the utility model, anti-collision simulation tests of different directions and inclination angles are carried out on the anti-collision beam, the flexibility of the detection mechanism is increased, and the test effect of the anti-collision beam of the battery pack is improved.

The invention provides automobile collision simulation equipment, and relates to the technical field of vehicle safety, the automobile collision simulation equipment comprises an impact frame arranged on a tested vehicle, a portal frame arranged on the side surface of a road, and an actuator arranged on the portal frame and extending towards the impact frame, and the impact frame is provided with a stress frame located on the side surface of the tested vehicle; an impact wheel support used for making contact with the stress frame is arranged at the end, close to the impact frame, of the actuator. In the vehicle driving process, the actuator is used for pushing the impact wheel support to apply the collision impulse to the impact frame on the vehicle, so that collision simulation of the tested vehicle is completed, evaluation of the vehicle impact resistance stability is facilitated, test consumption is reduced, it can be ensured that the test is safer, and the test efficiency is improved. And the impulse parameter value can be effectively quantified, so that the impact condition can be repeatedly reproduced, the test process is controllable, and accurate and reliable data can be provided for functional safety evaluation of the vehicle through multiple tests.

The invention discloses a profile collision test mechanism and a use method, and belongs to the technical field of collision simulation, a to-be-detected profile is clamped through two clamping plates, and a first transmission motor can adjust the placement angle of the profile when driving a rotary disc to rotate through a transmission gear ring and a gear, so that the profile collision test accuracy is improved. And the two clamping plates swing reversely through a second hydraulic oil cylinder, then the sectional materials are separated from the clamping plates and fall down under the action of gravity, and then the sectional materials collide with the material containing disc and are blocked through an annular guardrail. The strength of the section bar in the collision test can be measured by monitoring the pressure when the material placing disc is collided through the pressure sensors which are arranged in the circumferential direction, potential design problems can be found in time, and the construction risk and cost are reduced.

Embodiments of the present application disclose a kind of automobile crash simulation method, device, medium and vehicle, it is related to computer simulation technical field.The method comprises: according to the mass information of vehicle, damping information, stiffness information and external force information, the vibration differential equation of first time is constructed;According to vibration differential equation, the acceleration information, displacement information and speed information of the i-th iteration step are obtained by implicit method;According to vibration differential equation, acceleration information, displacement information and speed information, whether the difference of first parameter and second parameter is less than or equal to precision threshold value is judged;If yes, after constructing the vibration differential equation of second time, the step of obtaining the acceleration information, displacement information and speed information of the i-th iteration step according to the vibration differential equation of second time by implicit method is continued to be executed until the simulation of entire crash duration is completed.Thereby, the computing resources required for automobile crash simulation can be reduced, and the efficiency of automobile crash simulation analysis can be improved.

The invention discloses a bionic thin-walled structure crashworthiness analysis method based on finite element simulation, particularly relates to the technical field of computer-aided engineering simulation, and is used for solving the problem that the crashworthiness of a complex bionic thin-walled structure is difficult to systematically evaluate in the early stage of design in the prior art. The method comprises the following steps: establishing a three-dimensional geometric model, carrying out finite element grid division, constructing a finite element model for collision simulation, then applying a dynamic impact load to execute collision calculation, extracting node coordinate data, and converting a structure dynamic deformation process into topological characteristic evolution through persistent coherence analysis; a distance-based filtering process is adopted to generate a filtering complex sequence, a persistence graph is obtained by calculating homology group evolution, quantitative indexes, including an average life cycle and persistence entropy, representing topological feature persistence are extracted, then a performance balance graph is constructed, Pareto leading edge distribution is recognized through a non-dominated sorting algorithm in multi-objective optimization, and the performance balance graph is obtained. And the scheme screening of the collision resistance of the bionic thin-wall structure is realized.

The application provides a vehicle collision simulation model parameter identification method and system, dynamic response data of a physical collision experiment is collected, a finite element model of an experimental vehicle is constructed based on the dynamic response data, a prior probability distribution of a parameter to be identified is set according to a parameter range of the parameter to be identified, and a corresponding parameter sample set and a corresponding response simulation matrix are generated, the response simulation matrix is simplified through principal component analysis to reduce the calculation amount, and the posterior probability distribution is calculated according to the response principal component matrix, and then the quality evaluation index of the finite element model is calculated, and the final parameter to be identified is determined according to the quality evaluation index, so as to improve the accuracy of the parameter to be identified, and then the accuracy of the vehicle collision simulation model is improved.

The application discloses a vehicle window abnormal sound determination method and device. A vehicle finite element model is constructed by a geometric model of a target vehicle door and a body-in-white model. A door closing collision simulation is performed according to the vehicle finite element model to obtain a first gap amount of a window guide rail model and a door body model. Whether the target vehicle door has a vehicle window abnormal sound risk is determined according to the first gap amount and a preset first gap threshold. The application takes the gap change amount between the rail and the door body as a basis for measuring the door abnormal sound through the door closing collision simulation. The unreasonable factors of the window glass rail design that cause the door abnormal sound can be eliminated in the door design stage. More accurate window structure optimization for the door abnormal sound risk can be realized. The door quality is improved, and the vehicle comfort is improved.

The invention provides a human body model automatic construction method and system for automobile collision simulation. The method comprises the following steps: acquiring external dimension parameters of a target human body; based on a pre-trained parameterized deformation model and the external size parameters, driving operation is executed on the reference human body grid model to generate a shape model matched with the target human body, and the driving operation is used for driving geometric shapes of bones and soft tissues of the reference human body grid model to change based on the size parameters; corresponding material constitutive models are matched for different human tissues in the shape model to generate a distribution result, and the material constitutive models are used for simulating kinetic behaviors of the tissues under the collision load; and generating a human body finite element model based on the distribution result. According to the method, a parameterized deformation model is used for driving grid personalization, a complex material constitutive is matched for a personalized model, automatic execution and standardized output are achieved, and the period from individual data to an available simulation model is shortened.

The application provides a safety belt and air bag detection method and system for a new energy vehicle, and relates to the field of safety belt and air bag detection. The method comprises the following steps: determining a plurality of groups of collision simulation parameters of a new energy vehicle to be detected based on safety belt parameter information and safety air bag system parameter information of the new energy vehicle to be detected, safety belt parameter information and safety air bag system parameter information of a plurality of sample new energy vehicles, and safety belt and air bag test data; for each group of collision simulation parameters, obtaining a safety belt detection data set and an air bag detection data set corresponding to the collision simulation parameters of the new energy vehicle to be detected; and performing collaborative performance evaluation of the safety belt and the air bag of the new energy vehicle to be detected according to the safety belt detection data set and the air bag detection data set corresponding to each group of collision simulation parameters of the new energy vehicle to be detected, so that the collaborative detection of the safety belt and the air bag is realized.