汽车工程

汽车工程 ›› 2018, Vol. 40 ›› Issue (10): 1166-1171.doi: 10.19562/j.chinasae.qcgc.2018.010.007

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基于抗撞性的汽车B柱碳纤维加强板优化设计*

张君媛1, 姜哲1, 李仲玉1, 赵紫剑2   

  1. 1.吉林大学,汽车仿真与控制国家重点实验室,长春 130025;
    2.中国第一汽车集团有限公司研发总院,长春 130000
  • 收稿日期:2018-03-29 出版日期:2018-10-25 发布日期:2018-10-25
  • 通讯作者: 李仲玉,博士研究生,E-mail:zhongyu16@mails.jlu.edu.cn。
  • 基金资助:
    *国家重点研发计划项目(2016YFB0101601-4)和国家自然科学基金(51775228)资助

Optimization Design of Vehicle CFRP B-pillar Stiffening Panel for Crashworthiness

Zhang Junyuan1, Jiang Zhe1, Li Zhongyu1, Zhao Zijian2   

  1. 1.Jilin University, State Key Laboratory of Automotive Simulation and Control, Changchun 130025;
    2.General R&D Institute,China FAW Group Co., Ltd., Changchun 130000
  • Received:2018-03-29 Online:2018-10-25 Published:2018-10-25

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摘要： 考虑到碳纤维增强聚合物基复合材料的特点,本文中将某乘用车B柱原钢材加强板用碳纤维材料替代,并进行优化。首先在整车侧面碰撞有限元模型的基础上进行B柱子结构模型的解耦,利用子结构动态模型进行了B柱加强板的材料替换和性能计算,确定了初始纤维板铺层和厚度;为充分发挥复合材料可设计性的优势,采用面向复合材料的结构优化方法进行了纤维复合材料的铺层厚度、角度和铺层顺序优化。对比原车结构,在抗撞性不变的前提下,碳纤维B柱加强板取得显著的轻量化效果。

关键词: 汽车, 侧面碰撞, B柱, 碳纤维增强聚合物

Abstract: With the consideration of the characteristics of carbon fiber reinforced polymer (CFRP) composite, the original steel stiffening panel of B-pillar is substituted with CFRP, with the laminate optimized. Firstly on the basis of vehicle finite element model for side impact, the substructure model for B-pillar is decoupled, the dynamic model for substructure is used to conduct the material substitution and performance calculation of B-pillar stiffening panel, and the initial layup and thickness of the laminate are determined. Then to give full play to the advantage of designability of composites, the structural optimization method for composite is adopted to optimize the ply thickness, angle, and layup sequence of laminate. Compared with original vehicle structure, the CFRP stiffening panel of B-pillar achieves a significant lightweighting results with its crashworthiness remained unchanged

Key words: vehicle, side impact, B-pillar, CFRP