摘要
中国新车评价规程(Chinese new car assessment programme,C-NCAP)2024版乘员保护板块中新增了侧面碰撞远端乘员保护的虚拟测评项目,但是当前车辆的被动安全系统尚没有达到该评价规程要求.针对该现状,提出了在远端乘员侧添加远端气囊的解决方案,建立了远端气囊有限元模型,并进行了试验对标.首先,运用CATIA软件建立远端气囊的三维模型,利用HyperMesh对气囊模型进行几何清理及网格划分;其次,采用Primer软件折叠划分好网格的气囊有限元模型,设置远端气囊的材料属性及模型参数,应用LS-DYNA软件进行运算求解;最后,根据静态点爆与动态冲击试验结果对标远端气囊有限元模型.结果表明,静态点爆试验对标误差为1.4%,动态冲击试验对标误差在10%以内,符合新规要求.
Chinese New Car Assessment Programme(C-NCAP)has added a virtual evaluation item of far-end occupant protection in side impact in the occupant protection section of the 2024 edition,but the passive safety system of the current vehicle has not met the requirements of the evaluation regulation.In view of this situation,this paper proposes a solution to add a far side airbag to the far-end occupant side,establishes a finite element model of the far side airbag,and carries out experiments and benchmarks,Firstly,the three-dimensional model of the far side airbag is estab-lished by CATIA software,and the airbag model is geometrically cleaned and meshed by Hy-perMesh.Secondly,the finite element model of the mesh airbag is folded by Primer software,and the material properties and model parameters of the far side airbag are set,and the LS-DYNA soft-ware is used for calculation and solution.Finally,the finite element model of the far side airbag is calibrated according to the static ignition and dynamic impact test results.The results show that the calibration error of static ignition test is 1.4%,and that of dynamic impact test is within 10%,which meet the requirements of the new regulations.
作者
李红
刘佳兵
关栋
LI Hong;LIU Jiabing;GUAN Dong(School of Mechanical Engineer,Yangzhou University,Yangzhou 225127,China)
出处
《扬州大学学报（自然科学版）》
CAS
2024年第2期9-14,共6页
Journal of Yangzhou University：Natural Science Edition
基金
江苏省产学研合作项目(BY20231480)。
关键词
侧面碰撞
远端气囊
有限元法
仿真实验
side impact
far side airbag
finite element method
simulation experiment
