Design And Simulation Optimization Of Automobile Side Pole Impact Test Devices

Traffic accidents indicated that there are more impact accidents in the side of the automobile and the pole objects,and occupants are seriously injured and even more serious.As the special type of automobile side pole impact has been gradually recognized,the safety of automobile side pole impact has become an important research content in the passive safety field.The actual automobile impact test method is the closest to the real accident,and the test result is more accurate,which is particularly important in the design of the test devices for the impact test of the vehicle side pole.Based on the FMVSS214 and Euro-NCAP vehicle side pole impact test.The process of the automobile side pole impact test and the movement state of automobile during the impact process are analyzed,combined with the realistic conditions of the collision laboratory.Determine the test equipment required to complete the vehicle side pole impact test,including: mobile platform,impact energy absorbing devices,side support platform and side pole barrier.Analyzing design requirements of the side pole impact test devices,and determine the design ideas.According to the design requirements of the test devices to complete the design of the components,after the stainless steel pipe was selected,the quasi-static analysis of stainless steel tubes with different cross-sections and different wall thicknesses was carried out to study the characteristics of crushing and absorbing energy,and the design and model assembly of moving platform and collision energy-absorbing devices.At the impact speed of 29 km / h,the finite element analysis model of the mobile platform vehicle frame and the impact energy absorbing device was established by HyperMesh software,and the LS-DYNA solution was submitted.According to the simulation results,the support strength of the mobile platform frame structure is analyzed,and the optimization and improvement scheme is put forward.In order to avoid the rigid impact between the mobile platform and the energy absorbing device,calculate the length,quantity and wall thickness used to solve the impact energy absorption tube.Through simulation verification,analysis and optimization to determine the speed of the impact of the use of energy absorption tube parameters.According to the design requirements,the side support platform and the side pole barrier are designed.The finite element analysis is carried out by ANSYS software.The structural support strength is analyzed according to the simulation results,and the optimization scheme is proposed to meet the requirements of the side pole impact test,Automobile side pole impact test devices will be processed and manufactured,the processing processes is analyzed and the processing technology is completed.Next the side pole impact devices are manufactured.Finally the side pole impact devices are verified by real automobile side pole impact test,analyzing the devices,and improving the service life of the side pole impact test devices by carrying out small-scale optimization and improvement.