新能源汽车全塑结构在防撞安全性提高中的应用

Application of All-plastic Structure of New Energy Vehicles in the Improvement of Crash Safety

在能源及环境问题不断加剧和经济快速发展的双重背景下,全塑结构新能源汽车以其低能耗、零排放的优势迅速成为环保节能型汽车代表。针对全塑结构汽车强度弱、吸能能力差等问题,对车身防撞安全性进行研究。根据逆向工程技术建立新能源汽车三维重构模型,其中前处理阶段主要包括整车拆卸、数据采集和点云数据处理。通过汽车碰撞过程有限元理论,提出新能源汽车全塑结构碰撞过程有限元方程,并建立模型。最后根据逆向三维重构模型和有限元模型,对新能源汽车全塑结构进行碰撞仿真分析,并提出相应优化方案。

With the background of the heavy energy and environmental problems and the rapid economic development, all-plastic structure new energy vehicles with low energy consumption and zero discharge have quickly become the representative of energy-saving and environment-protecting cars. This paper investigated the crash safety of car body about low strength and poor energy absorption capacity of all-plastic car. A three- dimensional reconstruction model for new energy vehicles was proposed based on reverse engineering technology. The pretreatment stage mainly includes vehicle disassembly, data acquisition and point cloud data processing. Through the car collision process finite element theory, the equation for the crash course of the all-plastic structure of new energy vehicles was proposed based on the finite element theory of car collision, and the model was built. According to the reverse three-dimensional reconstruction model and finite element model, the new energy ear crash simulation analysis and corresponding optimization solution were proposed.