Optimization of Vehicle Side Curtain Airbag Module Based on Computer Aided Engineering  

作　　者：ZHANG Junyuan LI Dongjun BI Ying YANG Donglin QIU Feng 

机构地区：[1]The State Key Laboratory of Automobile Dynamic Simulation, Jilin University, Changchun 130025, China [2]Jinheng Automotive Safety System Co. Ltd., Jinzhou 121007, China

出　　处：《Chinese Journal of Mechanical Engineering》2009年第4期521-527,共7页中国机械工程学报（英文版）

基　　金：supported by National Hi-tech Research and Development Program of China (863 Program, Grant No. 2006AA110102)

摘　　要：Compared with other kinds of airbags, curtain airbag（CAB） has more complex structures and larger coverage area. The product development process depends on many module tests, sled tests and full size vehicle tests. Computer aided engineering（CAE） technology can replace tests to a great extent, also save test costs and product development time. This paper introduces the way of setting up simulation models and application of static deployment tests and free motion headform（FMH） tests to verify simulation models. In the CAB simulation, uniform pressure airbag models and computational fluid dynamics（CFD） models are all used. The uniform pressure airbag models are not able to simulate the pressure difference among different parts inside the cushion during inflating process. CFD-based CAB models are used to help the curtain airbag optimization design. Based on effective CAE simulation, the optimization analyses related to diffuser tube parameters, inflator mass flow rate and cushion folding patterns are discussed and performed in different cases. The optimization result shows that the proposed techniques are helpful to the parametric optimization design of side curtain airbag module in curtain airbag development process.Compared with other kinds of airbags, curtain airbag（CAB） has more complex structures and larger coverage area. The product development process depends on many module tests, sled tests and full size vehicle tests. Computer aided engineering（CAE） technology can replace tests to a great extent, also save test costs and product development time. This paper introduces the way of setting up simulation models and application of static deployment tests and free motion headform（FMH） tests to verify simulation models. In the CAB simulation, uniform pressure airbag models and computational fluid dynamics（CFD） models are all used. The uniform pressure airbag models are not able to simulate the pressure difference among different parts inside the cushion during inflating process. CFD-based CAB models are used to help the curtain airbag optimization design. Based on effective CAE simulation, the optimization analyses related to diffuser tube parameters, inflator mass flow rate and cushion folding patterns are discussed and performed in different cases. The optimization result shows that the proposed techniques are helpful to the parametric optimization design of side curtain airbag module in curtain airbag development process.

关 键 词：curtain airbag Computer aided engineering simulation OPTIMIZATION 

分 类 号：TP27[自动化与计算机技术—检测技术与自动化装置]