Optimization of Composite B-pillar with Considerations of Structures, Materials and Processes Requirements

被引：0
|
作者：
Li Y. [1 ]
Lei F. [1 ]
Liu Q. [1 ]
Wang Q. [1 ]
机构：
[1] Hunan University, State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Changsha
来源：
Lei, Fei (lei_fei@hnu.edu.cn) | 1600年 / SAE-China卷 / 39期
关键词：
B-pillar; Composite ply drop-off structure; Crashworthiness; Lightweighting; Multi-objective optimization;
D O I：
10.19562/j.chinasae.qcgc.2017.08.018
中图分类号：
学科分类号：
摘要：
In order to achieve lightweighting and enhance the crashworthiness of vehicle, a ply drop-off structure for composite B-pillar is adopted with considerations on structural and material characteristics of B-pillar. By utilizing the feature of composite material of being able to easily obtain variable section thickness through ply drop-off process, a multi-objective optimization on the ply drop-off structure of composite B-pillar is performed with two steps. Firstly ply drop-off regions are determined by analyzing the structural form of B-pillar, surrogate model is constructed and a simulation is carried out with multi-island genetic algorithm with lightweighting as objective to determine the ply number of each sublaminate. Then with concurrent considerations of.characteristics of process and performance of ply drop-off structure, the effects of different ply angles and stacking-sequences on the crashworthiness of vehicle are analyzed with the optimal scheme of laminate determined. The final results show that on the premise of meeting process requirements, the mass of composite B-pillar structure reduces by 61.4% with the crashworthiness of vehicle in overturn and side crash enhanced. © 2017, Society of Automotive Engineers of China. All right reserved.
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页码：968 / 976
页数：8
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