47 results about "Crashworthiness" patented technology

The utility model relates to the technical field of new energy vehicles, in particular to a frame for a new energy tricycle. The chassis comprises a main body support, a hub support, a frame support and a protective support, the main body support comprises transverse rods, longitudinal rods and reinforcing rods, the transverse rods and the longitudinal rods are mutually spliced to form a chassis main body frame, and the reinforcing rods are fixedly supported between the transverse rods and the longitudinal rods. The main body support forms a firm chassis main body frame through splicing of the transverse rods and the longitudinal rods, the reinforcing rods provide additional support between the transverse rods and the longitudinal rods, the rigidity of the whole structure is enhanced, the frame support is arranged on the upper side of the main body support, and the weight and load of the upper portion of a vehicle body can be effectively dispersed and borne; the protection support is installed on the outer side face and in the vehicle frame support, an additional protection layer is provided, and the reasonable layout of the protection support is beneficial for improving the crashworthiness and safety of the vehicle.

The utility model discloses a double-sided co-extrusion anti-collision large plate with strong anti-collision performance. The double-sided co-extrusion anti-collision large plate comprises an anti-collision large plate, connecting clamping grooves are formed in the two sides of the connecting base, and the connecting base is arranged on the back face of the large anti-collision plate so that the large anti-collision plate can be fixed; the positioning seat is provided with a positioning groove, and the positioning groove is used for positioning the connecting seat; and the buffering and positioning assembly is used for reducing impact force, and the buffering and positioning assembly is arranged on the connecting base. The anti-collision device has the advantages that impact force borne by the large anti-collision plate is buffered through the buffering and positioning assembly, the impact force borne by the large anti-collision plate is reduced, meanwhile, the wall can be prevented from being collided, the large anti-collision plate and the wall are prevented from being damaged, the service life is prolonged, the large anti-collision plate is convenient to disassemble and assemble through the buffering and positioning assembly, and the anti-collision device is convenient to use. And the working efficiency is improved.

The utility model discloses a bridge combined multi-stage energy consumption buffer device which comprises a steel jacket box, a steel partition plate used for separating space is arranged in the steel jacket box, and a first-stage energy consumption structure used for first-stage buffer energy consumption and a second-stage energy consumption structure used for second-stage buffer energy consumption are arranged in the separated space respectively. The steel jacket box is arranged outside the pier through the rubber fender. The UHPC panel and the stainless steel composite steel plate are adopted, and the service life of the structure is remarkably prolonged under the complex service environment of a water area. In the aspect of collision resistance, the high-strength steel grid structure has a definite deformation mode induction mechanism, the impact force is dispersed through the UHPC panel with large rigidity, the impact force is buffered through the honeycomb with small rigidity, the impact force is transmitted to the high-strength steel grid structure through the UHPC panel and the dense honeycomb, the energy consumption efficiency is greatly improved, the force transmission path is reasonable, coverage of different collision prevention levels can be achieved, and the energy consumption is reduced. And meanwhile, the compression stroke of the energy dissipation assembly is increased, the peak impact force is reduced, and designability is good.

This invention belongs to the technical field of automotive energy-absorbing structures, specifically relating to a reverse design method for variable-thickness thin-walled energy-absorbing structures. This method allows for the design of thickness variations based on the energy absorption characteristics of the thin-walled energy-absorbing structure itself. For a given impact load condition, the thickness of the automotive thin-walled energy-absorbing structure is used as the design variable, and the total energy absorption value of the thin-walled energy-absorbing structure is used as the design objective. Under the constraint of limiting the total mass of the thin-walled energy-absorbing structure, the aim is to improve crashworthiness. This method starts with reverse design, with the core idea of ​​increasing thickness where needed (where energy absorption is high) and decreasing thickness where it is not needed (where energy absorption is low), aiming for a rational material distribution within the structure. Through this method, engineers can quickly design variable-thickness energy-absorbing structures. This method simplifies the energy-absorbing structure design process, controls costs, and has good operability and convenience.

The utility model relates to the technical field of traffic engineering, in particular to a traffic engineering protective fence which comprises a shell, sliding grooves are formed in the same sides of the two symmetrical faces of the shell, and sliding covers are installed in the sliding grooves in a sliding mode. The force unloading assembly is installed in the shell, and the force unloading assembly is used for reducing the impact force borne by the protective fence; and the warning assembly is installed on one side of the force unloading assembly, and the warning assembly is used for warning passing vehicles. Compared with the prior art, the force unloading assembly is arranged, the vehicle impact force can be effectively unloaded, the crashworthiness is improved, and the service life is prolonged; the pressure spring ensures stable ejection of the ejection plate, so that the force unloading assembly is convenient to release; the clamping columns and the clamping grooves are flexibly matched, so that the protective fence is adjustable in layout and high in adaptability; meanwhile, the shell can be used as a temporary seat, construction is facilitated, and space is saved due to the fact that the shell is placed in a stacked mode.

The invention provides a method for testing the crashworthiness of rubber, and the method comprises the steps: S10, setting a moving part and an impact part, enabling the moving part to fix the rubber, and enabling the moving part to move along an impact direction so as to drive the rubber to impact the impact part; s20, the rubber is fixed to the moving part; s30, the moving part is driven to move at the preset initial speed, and the rubber is driven to impact the impact part; s40, the impact force borne by the rubber is collected; s50, the deformation amount and the recovery rate of the rubber after being impacted are collected; and S60, evaluating the crashworthiness of the rubber according to the initial speed of the moving part, the impact force applied to the rubber, and the deformation and recovery rate of the rubber after being impacted. According to the method for testing the crashworthiness of the rubber, a horizontal collision mode is adopted, so that the stress condition of a rubber material in practical application is reduced. The invention also provides a device for testing the crashworthiness of the rubber, which is used for realizing the method.

The invention relates to an anti-collision device unit and a crashworthiness analysis, regulation and control method thereof.According to the anti-collision device unit, a pre-designed initial defect is arranged on a round pipe, and the initial defect is used for inducing a folded waveform to be bent in advance at a preset position and keep stable transmission when the round pipe is axially crushed; therefore, the initial peak force of axial crushing of the circular pipe is reduced, large impact load cannot be transmitted to a structure needing to be protected in the early stage of protection, the local damage risk of the structure needing to be protected is reduced, energy consumption of the circular pipe capable of adopting axial crushing can be achieved, high platform bearing capacity can be kept, meanwhile, lower initial resistance is generated, and the anti-collision performance is improved. According to the crashworthiness analysis method of the anti-collision device unit, the design efficiency can be improved, the design period can be shortened, and then the requirements of rapid design and parameterization optimization in actual engineering can be met. According to the anti-collision device unit crashworthiness regulation and control method, the crashworthiness and design efficiency of the anti-collision device unit can be improved, and therefore the defects in the prior art are overcome.

The invention discloses a tower bag of a vehicle and the vehicle, and relates to the field of vehicles, the tower bag of the vehicle comprises a tower bag body, a first reinforcing structure and a second reinforcing structure, the first reinforcing structure and the second reinforcing structure are both arranged on the tower bag body, the first reinforcing structure extends in the height direction of the vehicle, and the second reinforcing structure extends in the length direction of the vehicle; and the first reinforcing structure and the second reinforcing structure are intersected. Therefore, the first reinforcing structure extending in the height direction of the vehicle can effectively stabilize the force transmitted to the vehicle body from the road surface through the suspension, the driving comfort of the whole vehicle can be improved, the second reinforcing structure extending in the length direction of the vehicle can reliably bear and absorb the collision force when a head-on collision occurs, and in addition, the collision force is reduced. The first reinforcing structure and the second reinforcing structure are arranged in a crossed mode, so that the mechanical property of the tower ladle can be remarkably improved, the tower ladle has excellent crashworthiness, the overall rigidity of the front cabin can be improved, and the performance requirement is met.

The utility model relates to a vehicle body and a vehicle, the vehicle body comprises a D column reinforcing plate, a D column inner plate, a first pipe and a partition plate, the D column reinforcing plate and the D column inner plate are welded and define a first cavity, the first pipe is located in the first cavity, the partition plate is located in the first cavity and installed on the outer wall of the first pipe, and the D column reinforcing plate and the D column inner plate are welded to form a second cavity. And the partition plate is welded with the D column reinforcing plate and the D column inner plate. The partition plate and the first pipe are arranged in the first cavity, so that the rigidity and the torsion resistance of the first cavity are improved, the rigidity, the structural stability and the collision resistance of the vehicle body are improved, and the safety performance of the vehicle body is greatly improved.

The embodiment of the invention provides an anti-collision structure and a vehicle, and relates to the technical field of automobile accessories. The anti-collision structure comprises a plurality of mounting beams and a plurality of connecting rods, wherein the mounting beams are arranged on the two sides of a longitudinal beam of a vehicle body of the vehicle respectively; each mounting beam is correspondingly provided with one connecting beam, one end of each connecting beam is used for being connected with a longitudinal beam of a vehicle body, and the other end of each connecting beam is arranged on the lower portion of the corresponding mounting beam; the anti-collision pieces are arranged between the ends, away from the vehicle body longitudinal beam, of the multiple mounting beams and between the ends, away from the vehicle body longitudinal beam, of the multiple connecting beams. According to the anti-collision structure and the vehicle, impact force can be decomposed and dispersed, and therefore the anti-collision performance of the vehicle is improved.

The application belongs to the technical field of automobile passive safety design, and specifically discloses an end-to-end safety design large model system and method for automobile crashworthiness driving. The system comprises a large language model module, and an input module, a multi-modal feature extraction and analysis module and an output module connected with the large language model module respectively; the input module is used for inputting crashworthiness design requirement information; the large language model module and the multi-modal feature extraction and analysis module adopt a cross-modal interaction mode, which is used for multi-modal feature extraction and cross-modal fusion by using the word sequence corresponding to the crashworthiness design requirement information, and iterative analysis based on the fused features under a preset crashworthiness constraint condition to obtain a target three-dimensional crashworthiness structure scheme; and the output module is used for outputting the target three-dimensional crashworthiness structure scheme. The application can greatly improve the efficiency of the entire automobile crashworthiness design process and shorten the vehicle safety development cycle.

A crashworthiness energy absorption part 1 according to the present invention absorbs crash energy by undergoing axial crash when a crash load is input from the front or the rear of a vehicle body, and comprises: a cylindrical part 10 including eight surface parts 11 and having an octagonal cross-sectional shape orthogonal to an axial crash direction; and a plurality of slits 20 formed in any of the surface parts 11 in a shape extending in a direction substantially orthogonal to the axial crash direction. The plurality of slits 20 are not formed in inclined surface parts 11d corresponding to the sides of the minimum length of the octagonal shape, but instead three or more slits are formed at equal intervals along the axial crash direction in side surface parts 11c corresponding to the sides of the maximum length of the octagonal shape. The length of each slit 20 is 10% or more of the length of the side of the side surface parts 11c, and the width of each slit 20 is 1.0 times or more of the plate thickness of the side surface parts 11c.

The utility model belongs to an automobile front longitudinal beam reinforcing structure in the technical field of automobile parts. The front longitudinal beam inner plate (1) is connected with the front longitudinal beam outer plate (2), the first front longitudinal beam reinforcing plate (3) is arranged on the left side folding portion of the upper portion of the inner surface of the front longitudinal beam inner plate (1), the second front longitudinal beam reinforcing plate (4) is arranged on the right side folding portion of the upper portion of the inner surface of the front longitudinal beam inner plate (1), and the third front longitudinal beam reinforcing plate (5) is arranged between the left side of the lower portion of the inner surface of the front longitudinal beam inner plate (1) and the front longitudinal beam outer plate (2). And a fourth front longitudinal beam reinforcing plate (6) is arranged between the right side of the lower part of the inner surface of the front longitudinal beam inner plate (1) and the front longitudinal beam outer plate (2). The automobile front longitudinal beam reinforcing structure is simple in structure and easy to form, the rigidity and the strength of a front longitudinal beam are improved, and the crashworthiness of an automobile in the frontal collision process is improved; the thickness, the material and the splicing welding position of the reinforcer are simply adjusted, the optimal rigidity and strength performance can be found through a simulation means, and the process is simplified.

The invention belongs to the technical field of port engineering and ship protection, and discloses a wharf anti-collision fender device. The base assembly is fixedly installed on a wharf. The buffering assembly is movably connected with the end, away from the wharf, of the base assembly and can move in the vertical direction relative to the base assembly, and the buffering assembly comprises a plurality of spring dampers arranged in an array mode. The energy absorption assembly comprises a shell, foam metal and a metal sandwich plate, the shell is fixedly connected with the end, away from the base assembly, of the buffer assembly, and the foam metal and the metal sandwich plate are both of trapezoidal structures extending in the vertical direction and are alternately stacked in an inner cavity of the shell; the protection assembly is fixedly connected with the end, away from the buffering assembly, of the shell and can elastically abut against the ship broadside. The gravity of the buffering assembly, the gravity of the energy absorption assembly and the gravity of the protection assembly are balanced with seawater buoyancy, so that the problems that an existing wharf anti-collision fender device is poor in buffering performance, prone to damage and insufficient in protection effect are solved, the collision resistance is improved, the service life is prolonged, and the ship protection capacity is improved.

The present application relates to the technical field of rail train, and discloses a rail train collision energy flow analysis method, which comprises the following steps: determining a rail train collision energy flow analysis framework; establishing a train longitudinal collision finite element model and a train three-dimensional collision finite element model; establishing a train collision energy transmission path analysis model; and respectively analyzing the transformation, dissipation and transmission of collision energy in the collision process based on the train longitudinal collision finite element model and the train collision energy transmission path analysis model. The present application can comprehensively analyze the flow characteristics of collision energy in the collision process from the three aspects of transformation, dissipation and transmission of collision energy by establishing the train longitudinal collision finite element model and the train collision energy transmission path analysis model of two rail trains in the corresponding collision scene, which is of great significance for revealing the train collision energy flow mechanism, strengthening the understanding of the dynamic instability behavior of train collision, and improving the design method of train multi-stage crashworthiness structure.

The invention relates to the technical field of impact energy absorption, in particular to a continuous fiber reinforced composite material mixed expansion type energy absorption structure which comprises a core pipe, an inner pipe is arranged inside the core pipe, an outer pipe is arranged outside the core pipe, the core pipe is connected with the inner pipe and the outer pipe through an adhesive, and the core pipe is made of a continuous fiber reinforced thermoplastic composite material. Comprising reinforced fibers and a base material, the reinforced fibers are laid in the circumferential direction of the axis of a core pipe, and the printing path of the core pipe is a continuous spiral line path. When the expansion compression load is applied, the circumferential pressure stress of the core pipe is converted into the axial tensile stress of the fibers, energy is dissipated by layer-by-layer breakage of the fibers, the outer pipe restrains the radial expansion of the core pipe, and the inner pipe transmits the load. The structure is low in initial peak load and stable in stress platform, and can be widely applied to crashworthiness design and impact protection systems in the fields of rail transit vehicles, automobiles, aerospace and the like.

According to the assembly type foam aluminum bridge anti-collision energy absorption device, an energy absorption cavity is defined by an outer layer aluminum plate, and an internal energy absorption structure is protected. The first rubber interlayer is arranged on the inner wall of the energy absorption cavity, the good elasticity of rubber is utilized, the buffering effect is achieved at the impact moment, and the direct influence of impact force on a follow-up structure is reduced. And the combination of the second rubber interlayer and the spring further optimizes the energy absorption effect. The springs absorb energy through stretching and retracting in the collision process, and the multiple springs arranged at intervals in the height direction can deal with collision at different positions in an omnibearing mode. The second rubber interlayer surrounds the spring, not only can assist in energy absorption, but also can prevent the spring from being damaged by direct friction with other parts, meanwhile, the second rubber interlayer is attached to the foamed aluminum layer, the integrity and the buffering effect of the structure are further enhanced, the anti-collision performance of a bridge is comprehensively improved, the bridge structure can be protected, and the service life of the bridge is prolonged. And the damage degree of vehicles and ships during collision can be reduced.

The utility model discloses a tool for detecting the crashworthiness of a sealing element, which comprises a base and an assembly disc, the assembly disc is arranged above the base, the top of the assembly disc is provided with an ejection disc, the two sides of the base are fixedly connected with first mounting seats, the two sides of the assembly disc are fixedly connected with second mounting seats, and the first mounting seats are fixedly connected with the second mounting seats. The top of the first mounting seat is fixedly connected with a guide rod, the guide rod penetrates through the top of the second mounting seat, anti-collision performance testing can be carried out on rubber strip sealing elements of different sizes and lengths in a unified mode, the working efficiency is greatly improved, automatic material jacking and taking operation can be achieved, and under the action of a reset spring, the material can be automatically ejected and taken. According to the device, after the protruding part of the cam leaves the bottom end of the ejector rod, the ejector rod in the rising state can automatically descend and reset, the design structure is more reasonable, the practicability is further improved, the assembled rubber strip sealing element can be taken out through the first semicircular strip plate and the second semicircular strip plate, and workers do not need to pull out the rubber strip sealing element little by little.

The utility model discloses a one-step molded high-strength draw-bar box, which relates to the technical field of draw-bar boxes, solves the problems of low anti-collision performance and low buffering and damping performance of the existing device, and adopts the following scheme that the whole body of a draw-bar box body is formed by integral injection molding, and anti-collision bumps A which are uniformly distributed are assembled on the front side of the draw-bar box body; according to the one-step molded high-strength draw-bar box, through the arrangement of the anti-collision convex blocks A, the anti-collision convex blocks B and the reinforcing protective plates, the integral strength of the draw-bar box formed through integral injection molding can be improved, the anti-collision performance of the draw-bar box can be improved through the anti-collision convex blocks A and the anti-collision convex blocks B, and the anti-collision performance and the strength of corners of the draw-bar box can be improved through the reinforcing protective plates; and meanwhile, through the arrangement of the buffer springs and the dampers, when the moving wheels are bumped, the buffer springs and the dampers can be used for buffering and damping the moving wheels, so that the bumping amplitude is reduced, and the stability and the safety of the device in use are improved.

A low-density polymer foam reinforced high-strength steel thin-wall automobile anti-collision beam relates to the technical field of automobile anti-collision beams and comprises a thin-wall beam, a foam block and polymer foam, the wall thickness of the thin-wall beam is 1 cm, an inner cavity of the thin-wall beam is filled with the polymer foam, and the flexural rigidity, the structural stability and the collision energy absorption level of the thin-wall beam can be greatly improved after filling. And the foam blocks are arranged at the front ends of the thin-wall beams, protection of the legs of pedestrians is facilitated, and the polymer foam blocks are only subjected to compression elastic deformation after collision and can restore to the original shape after unloading. According to the utility model, the self weight is reduced while the overall strength is ensured, and the energy absorption performance is good.

This application discloses a vehicle body structure and a vehicle. The vehicle body structure includes a central tunnel, and a front bumper beam, a first longitudinal beam, a front bulkhead crossbeam assembly, and a second longitudinal beam connected end-to-end to form a frame structure. The central tunnel is located behind and connected to the front bulkhead crossbeam assembly. The vehicle body structure also includes a first energy-absorbing structure disposed on the first longitudinal beam, a second energy-absorbing structure disposed on the second longitudinal beam, and a third energy-absorbing structure located within the frame structure. The third energy-absorbing structure is connected to the front bulkhead crossbeam assembly, and at least partially closer to the front bumper beam than the front bulkhead crossbeam assembly. In this vehicle body structure, the third energy-absorbing structure connected to the front bulkhead crossbeam assembly reduces front bulkhead intrusion, improves overall vehicle crashworthiness, and facilitates the standardization of powertrain mounting points and reduces the design complexity of the front bulkhead crossbeam assembly.

The embodiment of the invention provides a training method, device and equipment for a thin-wall beam crashworthiness prediction model and a medium. The method comprises the following steps: acquiring a sample thin-wall beam grid model, acquiring simulation result data corresponding to the sample thin-wall beam grid model, and taking the simulation result data as a label value; voxelization processing is carried out on the sample thin-wall beam grid model to generate thin-wall beam voxelization features; performing dimension reduction processing on the voxelization features of the thin-wall beam to generate data features of the thin-wall beam; obtaining thin-wall beam thickness data, and fusing the thin-wall beam thickness data with the thin-wall beam data features to generate target thin-wall beam data features; and obtaining a to-be-trained thin-walled beam collision resistance prediction model, and training the thin-walled beam collision resistance prediction model according to the target thin-walled beam data features and the label values to generate a trained thin-walled beam collision resistance prediction model. Therefore, the prediction precision is improved, and the simulation and experiment time and economic cost are remarkably reduced.

The utility model relates to a kind of honeycomb aluminum door sill beam assembly for automobile, including the door sill beam body of aluminium alloy section structure, and the inner cavity of door sill beam body is provided with honeycomb aluminum structure. The honeycomb aluminum structure includes the honeycomb aluminum core extending along the length direction of door sill beam body, and the outer circumferential side of honeycomb aluminum core is provided with honeycomb baffle, and the honeycomb baffle wraps honeycomb aluminum core. The utility model structure design is simple, reasonable, by setting honeycomb aluminum structure in the inside of aluminium alloy section structure's door sill beam body, honeycomb aluminum structure has very strong compression strength and energy-absorbing effect, improves the vehicle crashworthiness, strengthens the protection of passenger cabin when automobile side collision;While honeycomb aluminum structure is lighter, greatly reduces the weight of part, reaches the purpose of automobile light weight, and simplifies manufacturing procedure, improves production efficiency, reduces tooling cost.

The utility model discloses an anti-collision beam assembly of a vehicle and the vehicle and relates to the technical field of automobile accessories, the anti-collision beam assembly is used for being connected with a frame of the vehicle, the anti-collision beam assembly of the vehicle comprises an anti-collision beam body and a reinforcing piece, the anti-collision beam body extends in the first direction and extends in the second direction, and the reinforcing piece is arranged on the anti-collision beam body. The reinforcing piece is arranged on one side of the anti-collision beam body, the reinforcing piece is fixedly connected with the anti-collision beam body, the reinforcing piece is suitable for being connected with the frame in an abutting mode, and the first direction, the second direction and the height direction of the anti-collision beam assembly are perpendicular to one another. According to the anti-collision beam assembly of the vehicle, the anti-collision performance of the anti-collision beam assembly can be improved, the number of parts of the anti-collision beam assembly is small, the structure is simple, the weight is light, the lightweight design requirement of the vehicle can be met, the safety can be improved, the space occupation of the anti-collision beam assembly can be reduced, the number of molds needed during production is small, and the production cost is low. The production cost is low.

A rear floor assembly for a vehicle can have a structure in which a pair of longitudinal members are connected to a first transverse member and a second transverse member and both the first transverse member and the second transverse member are connected to each other through a connection reinforcement member, so that the overall skeletal structure of the rear floor assembly is capable of being strengthened, side collision performance (crashworthiness) is capable of being increased, and passenger protection performance is capable of being increased.

The present invention relates to the technical field of structural optimization, and discloses a method and system for optimizing the crashworthiness performance of an energy-absorbing structure of a rail vehicle, comprising: determining corresponding simulation parameters affecting energy absorption and a multi-dimensional collision mechanical response data set of the energy-absorbing structure; constructing a multi-dimensional collision response prediction model; defining a pattern stability constraint based on a decoding result of an image feature extraction network, defining a load stability constraint based on a decoding result of a curve feature extraction network, and defining an index matching constraint based on an output result of the multi-dimensional collision response prediction model; constructing a multi-objective crashworthiness optimization model of the energy-absorbing structure based on the pattern stability constraint, the load stability constraint, and the index matching constraint, and solving the model to obtain a Pareto solution set; solving the optimal feasible solution of the Pareto solution set, and using the optimal feasible solution as a crashworthiness optimization result of the target energy-absorbing structure; the present invention solves the problem of low reliability of optimization results in existing crashworthiness optimization methods.

The utility model relates to a vehicle body which comprises a front wheel cover outer plate, a front wheel cover outer plate reinforcing plate and a first reinforcing pipe, the front wheel cover outer plate reinforcing plate and the front wheel cover outer plate are welded and define a first cavity, and the first reinforcing pipe is fixedly connected with the front wheel cover outer plate and the front wheel cover outer plate reinforcing plate. And the first reinforcing tube is positioned in the first cavity. The first reinforcing pipe is arranged in the first cavity to improve the rigidity and the torsion resistance of the first cavity, then the torsion resistance of the front wheel cover area of the vehicle body is improved, the rigidity, the structural stability and the crashworthiness of the vehicle body are improved, and therefore the safety performance of the vehicle body is 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 utility model relates to the technical field of automobile parts, and disclose a reinforced automobile bumper, the utility model discloses through setting up reinforcing mechanism, including U type crash beam, first bumper, second bumper and reinforcing rod, multiple structures cooperate with each other, can effectively disperse and absorb the collision force, significantly improved the bumper crashworthiness, and the crashworthiness is excellent, when the collision occurs, can better protect the automobile body and the safety of the people in the car, the bumper main part adopts the high -strength composite material that is made by polypropylene, glass fiber and anti -aging agent according to specific mass ratio mixes, surface spray blast -resistant armor paint coating simultaneously, not only has improved the strength and rigidity of bumper main body, still strengthened its anti -aging, impact -resistant and anti -scratch performance, effectively prolonged the service life of bumper, and the adjusting mechanism can respond to the collision of different directions according to actual demand, and the connecting mechanism is convenient to detach and maintain, reduced maintenance cost.