Simulation of Restraint System Performance upon the Occupant's Response During Impact  

作　　者：孙立清[1,2] 林逸[1,2] 孙逢春[1,2] 

机构地区：[1]北京理工大学车辆工程学院 [2]吉林工业大学汽车工程学院

出　　处：《Journal of Beijing Institute of Technology》1999年第2期96-102,共7页北京理工大学学报（英文版）

基　　金：高等学校博士学科点专项科研基金

摘　　要：Aim To study the influence of restraint system performance upon the occupant's response during impact, and provide a scientific base for occupant restraint system design. Methods \ In the light of basic theory of multibody system dynamics and impact dynamics on the basis of classical theory of impact, R W method is adopted to construct the vehicle occupant system model consisting of fourteen rigid bodies, thirty seven DOFs and slip joints for the simulation. A software named SVC3D(3 dimensional simulation of vehicle crash) is developed in the FORTRAN language. Results\ The results of simulation have a good coincidence with those of tests and the restraint system with low elongation webbing and equipped with pretensioner provides better restraint effect for the occupant. Conclusion\ The model of vehicle occupant multibody system and SVC3D are suitable for use. Occupant should be belted with low elongation webbing to a certain degree and occupant restraint system should be equipped with pretensioner.目的研究约束系统特性对乘员碰撞响应的影响规律，为约束系统设计提供依据．方法以多体系统动力学和经典碰撞动力学的基本理论为依据，利用ＲＷ方法建立了具有１４个刚体、３７个自由度、带滑移铰的汽车乘员多体系统碰撞仿真模型，并开发了相应的仿真软件ＳＶＣ３Ｄ．结果仿真和试验结果基本一致；伸展率较小或配备了预紧器的约束系统约束效果好．结论所建立模型和所开发软件是正确的；在一定范围内，应采用伸展率较小的安全带并应配备安全带预紧器。

关 键 词：vehicle  occupant multibody system model multibody system dynamics impact dynamics computer simulation vehicle passive safety 

分 类 号：U461.91[机械工程—车辆工程]