Body Structure Design of Pure Electric Vehicle Based on Topology Optimization

In this paper, aiming at the body structure of pure electric vehicle, an optimization process of body structure is designed by adopting the method of topology optimization. Different topology optimization models are used, and it is verified that these models have different effects in vehicle body structure optimization. The results show that the power transmission path of the body structure, the joint structure of the key area, the weak area of the body, the effect of the reinforcements in each cavity and the material thickness distribution of the parts can be analyzed based on the topology optimization method in the design stage of the pure electric vehicle. Topology optimization methods can also perform lightweight analysis and optimized connections for body structures. Therefore, a topology optimization method flow that runs through each design stage of the body structure is formed. The method can increase the torsional stiffness of the car body to 40000 N/m.