欢迎访问《汽车安全与节能学报》，
汽车安全与节能学报

JASE ›› 2016, Vol. 07 ›› Issue (04): 395-402.DOI: 10.3969/j.issn.1674-8484.2016.04.007

• 汽车安全 • 上一篇    下一篇

基于能量管理与仿真的汽车前端结构优化设计

YAO Zhou, HAO Yumin, LI Hongjian   

  1. 中国第一汽车股份有限公司技术中心，汽车振动噪声与安全控制综合技术国家重点实验室， 长春 130011，中国
  • 收稿日期:2016-01-29 出版日期:2016-12-25 发布日期:2016-12-28
  • 作者简介:姚宙（1985—），男（汉），长春，主管工程师。E-mail: yaozhou@rdc.Faw.com.cn
  • 基金资助:

    中国第一汽车股份有限公司科技创新资助项目（1540A）

Design and optimize of vehicle's front structures based on energy management and simulation

姚宙，郝玉敏，李红建   

  1. China First Automobile Works Group Corporation R & D Center, State Key Laboratory of Comprehensive Technology on Automobile Vibration and Noise & Safety Control, Changchun 130011, China
  • Received:2016-01-29 Online:2016-12-25 Published:2016-12-28

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摘要：

汽车前端结构主要包括防撞梁吸能盒总成，前纵梁及其相应的连接板，在正面碰撞中，前端结构需要吸收约50%的碰撞动能。为实现前端结构刚度匹配，达到碰撞能量吸收要求，降低车身碰撞加速度水平，提高乘员保护效果，该文基于某运动型多功能车（SUV）车型车体开发过程，采用碰撞能量管理耐撞性设计理念，结合理论公式与有限元仿真优化分析方法，对车身前端关键结构进行了优化设计，并对优化后结构进行防撞梁总成静压与前纵梁台车碰撞试验。结果表明：基于能量管理与仿真的汽车前端结构优化设计方法，较好地实现了结构的刚度匹配，满足了碰撞吸能性能要求，达到耐撞性设计目标。

关键词: 汽车安全, 汽车前端结构, 耐撞性, 能量管理, 优化设计, 刚度匹配

Abstract:

Vehicle's front structure consisted of bumper and crash-box assembly, longitudinal rail and relative connection plate. During front impact, almost 50% of kinetic energy is absorbed by front structure. In the research, a sport utility vehicle (SUV) body was designed to realize structure stiffness matching, absorb required energy, reduce the crash acceleration level and improve passenger protect effect by the idea of collision energy management, finite element simulation and optimization method. The result of crash beam assembly static pressure and longitudinal rail sled crash test shows that the method of design and optimization, which based on
energy management and simulation, realizes stiffness matching well, satisfies energy absorption requirement and meets crashworthiness target.

Key words: vehicle safety, vehicle's front structure, crashworthiness, energy management, optimize, stiffness matching