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汽车偏置碰撞的车身结构和布置优化

汽车偏置碰撞的车身结构和布置优化

王志涛1,2彭鸿1,2门永新1,2赵福全1,2

1.浙江吉利汽车研究院有限公司,杭州,311228

2.浙江汽车安全控制技术重点实验室

摘要:机舱内的前横梁、吸能盒和纵梁等是正面碰撞车身结构安全关键件,而机舱布置直接影响正面碰撞的变形空间。根据汽车纵梁、悬置和蓄电池布置等对偏置碰撞的影响特点,针对车身结构和机舱布置存在的缺陷,提出有效的改进方案。验证结果表明,优化方案满足碰撞安全性能要求,车身结构变形良好,吸能盒和左纵梁刚度分布合理,不因蓄电池和悬置布置而影响纵梁充分发挥变形吸能的作用,从而有效地保障车辆的碰撞安全性能,达到在新车开发中优化结构的目的。

关键词:布置;偏置碰撞;车身结构;碰撞性能;优化

Optimized Body Structure and Packaging of Automobile Offset Deformable Barrier 

Impact

Wang Zhitao1,2Peng Hong1,2Men Yongxin1,2Zhao FuQuan1,2

Geely Automobile Research Institute CO. LTD, HangZhou, 311228

Zhejiang Key Laboratory of Automobile Safety Technology

Abstract: From bumper, crash box and side rail are key body structure parts in front crash. Deformation space is affected by compartment packaging. According to the side rail, mounting, storage battery packaging and etc,

which influence performance of automobile offset deformable barrier impact, the improvement schemes are proposed by focusing on the problems existed in the current vehicle structure and compartment packaging. It is proved that body structure has a good deformation. Also crash box and left side rail has reasonable stiffness distribution while optimization cases meet crash performance requirements. But the sufficient deformations of the side rail are not affected by storage battery and mounting packaging. The objective of the analysis is to guide structural design and improves a car's safety performance.

Key words: Packaging; Offset Deformable Barrier Impact; Body Structure; Crash performance; Optimization

℃不理想,不能j

图5悬置雨

与真空助力器接触i压真空助力器,边

撞的结构性能,对纵梁、悬置布至

E吸能盒先于纵梁压溃,但纠曼变形,需要把薄弱位置优化

:了重要的设计支持,同时为后期改趔

加速度波形是评价碰撞性能的重要差.t. fL * ^i一、^^I.b m_rH目I J

j舱侵入大小的重要指标,器伤害的风险。

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