复合材料发动机罩的行人头部保护研究

doi:10.16265/j.cnki.issn1003-3033.2017.12.008

中国安全科学学报 ›› 2017, Vol. 27 ›› Issue (12): 43-48.doi: 10.16265/j.cnki.issn1003-3033.2017.12.008

复合材料发动机罩的行人头部保护研究

都雪静副教授, 王艺群

东北林业大学交通学院,黑龙江哈尔滨 150040

收稿日期:2017-08-23 修回日期:2017-10-10 出版日期:2017-12-28 发布日期:2020-10-10
作者简介:都雪静 (1975—),女,吉林通化人,博士,副教授,主要从事轿车轻量化设计与碰撞安全研究。E-mail:duxuejing99@163.com。
基金资助:
国家自然基金青年基金资助(51108068);中央高校专项资金项目(2572017DB01);国家重点研发计划重点专项(2017YFC0803901);黑龙江省交通运输厅项目(E201350)。

Optimum design of composite material engine hood based on pedestrian head protection

DU Xuejing, WANG Yiqun

School of Traffic,Northeast Forestry University,Harbin Heilongjiang 150040,China

Received:2017-08-23 Revised:2017-10-10 Online:2017-12-28 Published:2020-10-10

摘要/Abstract

摘要： 为研究聚丙烯复合材料发动机罩的行人保护性能,应用ANSA软件建立发动机罩和行人头部冲击器的有限元模型;参照欧盟EC 78/2009行人保护法规要求,选取碰撞危险点;应用 LS-DYNA 有限元分析软件研究相同结构下聚丙烯复合材料发动机罩和钢制发动机罩的行人保护能力以及静态刚度,比较不同配比材料发动机罩的吸能特性和头部碰撞损伤的相关加速度值,并针对铰链处进行结构优化设计。研究表明:所设计的新的聚丙烯复合材料发动机罩在保证刚度的条件下,有明显减重效果,并在头部碰撞区域对行人头部有较好保护效果。

关键词: 发动机罩, 复合材料, 行人保护, 头部冲击器, 碰撞仿真, 结构优化

Abstract: In order to study the pedestrian protection performance of polypropylene composite engine hood, a finite element model was built for an engine hood and pedestrian head impactors were built for children and adults by using ANSA software. Collision risk points were identified according to the requirements of EC 78/2009 directive. The pedestrian protection ability and static stiffness of both the polypropylene composite engine hood and the steel engine hood under the same structure condition were studied by LS-DYNA finite element analysis software. Effects of composition of the composite material on the energy absorption characteristics and the related acceleration values of head impact damage of the engine hood were examined. The hinge was improved. The results show that the new polypropylene composite engine hood has an obvious weight reduction effect under the condition that the rigidity was ensured, and that it can provide better protection to the pedestrian head.

Key words: engine hood, composite material, pedestrian protection, head impactors, crash simulation, structure optimization

中图分类号:

都雪静, 王艺群. 复合材料发动机罩的行人头部保护研究[J]. 中国安全科学学报, 2017, 27(12): 43-48.

DU Xuejing, WANG Yiqun. Optimum design of composite material engine hood based on pedestrian head protection[J]. China Safety Science Journal, 2017, 27(12): 43-48.

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复合材料发动机罩的行人头部保护研究

Optimum design of composite material engine hood based on pedestrian head protection

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