基于等刚度原理的碳纤维汽车B柱抗撞性分析

玻璃钢/复合材料 ›› 2018, Vol. 0 ›› Issue (11): 58-63.

基于等刚度原理的碳纤维汽车B柱抗撞性分析

孙冬鸣¹, 马其华^1,2*, 孙佳睿¹

1.上海工程技术大学机械与汽车工程学院,上海201620;
2.东华大学机械工程学院,上海201620

收稿日期:2018-08-20 出版日期:2018-11-28 发布日期:2018-11-28
通讯作者: 马其华(1980-),男,博士研究生,副教授,主要从事汽车轻量化及碳纤维复合材料应用方面的研究,mqh0386@163.com。
作者简介:孙冬鸣(1993-),男,硕士研究生,主要从事复合材料汽车轻量化与碰撞方面的研究。
基金资助:
中央高校基本科研业务费专项资金学科交叉重点计划项目(18D110320)

CRASHWORTHINESS ANALYSIS OF CARBON FIBER AUTOMOBILE B-PILLAR BASED ON EQUAL STIFFNESS PRINCIPLE

SUN Dong-ming¹, MA Qi-hua^1,2*,SUN Jia-rui¹

1.School of Mechanical and Automotive Engineering, Shanghai University of Engineering and Technology,Shanghai 201620, China; 2.School of Mechanical Engineering, Donghua University, Shanghai 201620, China

Received:2018-08-20 Online:2018-11-28 Published:2018-11-28

摘要/Abstract

摘要： 采用吸能比更高的碳纤维增强复合材料(CFRP)替代原有金属汽车B柱是实现整车轻量化的有益探索。基于等刚度原理设计碳纤维增强复合材料汽车B柱,建立B柱与移动柱的有限元碰撞模型,对比分析移动柱在7.2 km/h冲击速度下撞击B柱不同部位处的侵入量以及侵入速度的差异性。结果表明:与原高强度钢B柱相比,碳纤维复合材料B柱在低速冲击时变形更小,能量吸收性能更好,具有更好的抗撞性;同时相对于高强钢B柱质量减小了26.27%,更好地满足了汽车B柱轻量化的要求。

关键词: 等刚度原理, CFRP, 汽车B柱, 轻量化, 抗撞性分析

Abstract: The use of carbon fiber reinforced composites (CFRP) with higher energy absorption ratio to replace the original metal automobile B-pillar is a useful exploration to realize the lightweight of the whole vehicle, and is of great significance for the replacement of automobile structural parts. The carbon fiber reinforced composite material B-pillar was designed based on the principle of equal stiffness, and the finite element collision model of B-pillar and moving column was established. By comparing and analyzing the intrusion amount and the intrusion speed difference of the moving column at different impact points of the B-pillar at the impact velocity of 7.2 km/h. The results show that compared with the original high-strength steel B-pillar, the carbon fiber composite B-pillar has less deformation at low speed impact, more energy absorption and better crashworthiness. At the same time, compared with the high-strength steel B-pillar, a mass reduction of 26.27% is realized, which could better meet the automotive B-pillar lightweight requirements.

Key words: equal stiffness principle, CFRP, automobile B-pillar, lightweight, crashworthiness analysis

中图分类号:

TB332

孙冬鸣, 马其华, 孙佳睿. 基于等刚度原理的碳纤维汽车B柱抗撞性分析[J]. 玻璃钢/复合材料, 2018, 0(11): 58-63.

SUN Dong-ming, MA Qi-hua,SUN Jia-rui. CRASHWORTHINESS ANALYSIS OF CARBON FIBER AUTOMOBILE B-PILLAR BASED ON EQUAL STIFFNESS PRINCIPLE[J]. Fiber Reinforced Plastics/Composites, 2018, 0(11): 58-63.

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