电动汽车碰撞安全性研究-车辆工程专业论文.pdf山东理工大学硕士学位论文 ABSTRACT ABSTRACT In recent years, with the number of cars growing, casualties and property losses caused by automobile traffic accident also greatly increased, so the safety design of the car has e an important part of the automobile research and development stage. According to relevant statistics, car head-on collision accident is fatal in the traffic accidents caused by car collisions. Therefore, automotive frontal impact safety research has e an important content for the structure safety design. The paper describes the considerations and methods in detail in the ANSYS Workbench and ETA/VPG software including how to simplify the model and how to mesh and how to control the element size. At the same time, the paper also detailedly introduces the processes and methods of how to establish suspension and tire finite element model, define the spot weld, select the collision regulations, define all kinds of control card and output the simulation result in the VPG software to establish the finite element model for vehicle collision. This paper mainly research on the frontal impact safety research of a mini electric car with finite element method, including the car front 100% collision rigid wall according to the federal motor vehicle safety FMVSS208 rule, the car front 40% offset collision deformation counterguard according to the European ECE R94 rule, and the car head-on with rigid column based on the FRONT RIGID POLE rule. Through the above simulation analysis, the figure of the deformation, energy change curve and acceleration curve of the key positions in the LS-DYNA software were respectively obtained , and the safety of the vehicle was also the analysis of the deformation and energy for vehicle and the deformation and energy analysis of key parts,it can be seen that the electric car of the front longitudinal beam is too rigid to absorb enough the same time, through the analysis of the acceleration of car B column and t
