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汽车安全与节能学报

汽车安全与节能学报 ›› 2013, Vol. 4 ›› Issue (2): 130-135.DOI: 10.3969/j.issn.1674-8484.2013.02.004

• 汽车安全 • 上一篇    下一篇

某车型MDB 侧面碰撞后门开启的CAE 优化

李飞，鄂世国，乔鑫   

  1. 华晨汽车工程研究院，沈阳 110141，中国
  • 收稿日期:2013-02-01 出版日期:2013-06-25 发布日期:2013-06-27
  • 作者简介:李飞（1980—），男（汉），山西，工程师。E-mail ：lifei@brilliance-auto.com 04/10 130 — 135

CAE optimization for rear door opening in MDB side impact test for a vehicle

LI Fei, E Shiguo, QIAO Xin   

  1. Brilliance Automotive Engineering Research Institute, Shenyang 110141, China
  • Received:2013-02-01 Online:2013-06-25 Published:2013-06-27

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摘要： 对某真实车型，进行过移动式可变形壁障、侧面碰撞的摸底实验，实验过程中发生后门开启。为了解其原因，该文采用计算机辅助工程(CAE) 仿真分析，建立了与该实验条件完全相同的分析模型；又用LS-DYNA 软件，对分析模型，进行侧面碰撞的仿真分析，得到与实验对标良好的对标模型。结果发现：在碰撞过程中，后门把手安装位置变形过大和发生扭曲，导致开启动作。结构优化方案的实车实验结果与分析结果一致。与原结构相比较，优化方案有明显改进。结果表明：对标良好的分析模型是解决问题的基础。因而，采用CAE 优化分析，开发时间短，实验次数少，节约成本，可保证设计和开发进度。

关键词: 汽车工程, 被动安全, 侧面碰撞, 后门, 移动式可变形壁障(MDB) , 计算机辅助工程（CAE）仿真

Abstract: Rear door opening took place in an MDB (moving deformable barrier) side impact evaluation test for a vehicle. A simulation model with completely the same conditions as those of the test was established based on CAE (computer aided engineering) simulation to solve this problem, with the model simulated using LS-DYNA software. The simulation results agree well with the test results. The reason for door opening is that the local mount area where the rear door outer handle was located had serve deformation and distortion, resulting in the outer handle opening operation in side impact. The optimized structure test result is the same as the simulation. The optimized structure is obviously improved compared with the original structure. The results show that a well correlated model is the basis for solving the problem. Therefore, CAE correlated optimization analysis ensures the design target and product development plan with less development time and cost, and with less test times.

Key words: automotive engineering, passivity safety, side impact test, vehicle rear door, mobile deformable barrier (MDB), computer aided engineering (CAE) simulation

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