汽车用碳纤维复合材料前防撞梁的轻量化与优化设计

玻璃钢/复合材料 ›› 2019, Vol. 0 ›› Issue (8): 98-103.

汽车用碳纤维复合材料前防撞梁的轻量化与优化设计

张鑫,赵晓昱^*,兰祥,陈玲俐

上海工程技术大学机械与汽车工程学院,上海201620

收稿日期:2018-11-09 出版日期:2019-08-28 发布日期:2019-08-28
通讯作者: 赵晓昱(1968-),女,副教授,主要从事复合材料结构设计方面的研究,zhaoxiaoyu@sues.edu.cn。
作者简介:张鑫(1995-),男,硕士,主要从事汽车被动安全方面的研究。
基金资助:
上海工程技术大学研究生科研创新项目(E3-0903-19-01156)

LIGHTWEIGHT AND OPTIMIZED DESIGN OF CARBON FIBER COMPOSITE FRONT BUMPER BEAM

ZHANG Xin, ZHAO Xiao-yu^*, LAN Xiang, CHEN Ling-li

School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, China

Received:2018-11-09 Online:2019-08-28 Published:2019-08-28

摘要/Abstract

摘要： 为了实现汽车的轻量化设计,提高其被动安全性,以某款汽车的前防撞梁为研究对象,根据法规要求分别建立了钢制和碳纤维T300/5208的防撞梁低速碰撞模型,进行碰撞仿真,分析了两种材料的吸能情况。在HyperStudy中采用最优拉丁超立方采样方法获得样本点以及数据,再采用HyperKriging方法构建近似模型,随后采用遗传算法进行优化计算,最后得到最优解并进行实验验证。优化结果表明:低速碰撞时,碳纤维材料防撞梁的吸能增加了5.6%,比吸能约是原钢制的3.7倍,减重达到71.4%,吸能特性和轻量化效果提升显著。

关键词: 防撞梁, 碳纤维复合材料, 试验设计, 遗传算法, 优化设计

Abstract: In order to realize the lightweight design of the car and improve its passive safety, the front bumper beam of a car is taken as the research object. According to the regulations, the low-speed collision model of steel and carbon fiber T300/5208 was established respectively. The collision simulation was carried out and the energy absorption of the two materials was analyzed. In the HyperStudy software, the optimal Latin hypercube sampling method is used to obtain the sample points and data, and then the HyperKriging method is used to construct the approximate model. Then the genetic algorithm is used to optimize the calculation. Finally, the optimal solution is obtained and experimental verification is carried out. The optimization results show that the energy absorption of the carbon fiber material bumper beam increases by 6.4% at low speed collision, the energy absorption is about 3.7 times that of the original steel, the weight loss reaches 71.4%, and the error between the optimized result and the actual solution result is less than 1%. The energy absorption characteristics and the lightweight effect are significantly improved.

Key words: bumper beam, carbon fiber composite, design of experiments, genetic algorithm optimized design

中图分类号:

TB332

张鑫,赵晓昱,兰祥,陈玲俐. 汽车用碳纤维复合材料前防撞梁的轻量化与优化设计[J]. 玻璃钢/复合材料, 2019, 0(8): 98-103.

ZHANG Xin, ZHAO Xiao-yu, LAN Xiang, CHEN Ling-li. LIGHTWEIGHT AND OPTIMIZED DESIGN OF CARBON FIBER COMPOSITE FRONT BUMPER BEAM[J]. Fiber Reinforced Plastics/Composites, 2019, 0(8): 98-103.

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