基于C-NCAP正面碰撞的某电动车乘员侧气囊虚拟设计及仿真

摘要

最新的C-NCAP测试工况包含了64 km／h的偏置碰及50 km／h的全正碰，对安全气囊的设计要求更高。基于某款从B级车平台开发的电动车，利用虚拟设计及CAE分析设计出满足C-NCAP碰撞5星目标要求的乘员侧气囊。通过气囊概念设计-车内爆炸模拟-静态展开试验-整车碰撞仿真的研究方法，获得整车碰撞优化配置参数，碰撞试验结果与仿真耦合理想。此项虚拟设计采用与物理验证相结合的方法，有助于高效地定义乘员侧气囊的设计参数。%The latest C-NCAP covers 40% offset 64 km/h test as wel as 50 km/h ful frontal test which proposes further requirements for the airbag systems.In this study,a passenger airbag of an electric vehicle,based on a B-class platform,was developed in the CAE circumstance,for the purpose of the C-NCAP 5-star rating.Two types of concept passenger airbags were drawn based on the vehicle interior model,and evaluated through in-vehicle simulations.Static deploy-ment test was conducted for in-vehicle analysis and module correlation,fol owed with passenger side restraint system optimizations with MADYMO simulations for the optimal set-up of the real world C-NCAP crash test.The effects of crash pulse,TTF,and dummy position were considered in simulations for the final parameter definitions.With this virtual design-validation process,the preliminary passenger airbag parameters for the crash test can be achieved more efficiently.