基于耐撞性的碳纤维/聚丙烯泡沫夹芯板结构优化研究*

doi:10.19562/j.chinasae.qcgc.2020.06.020

Abstract

Abstract: In view of the requirements of vehicle lightweight and crshworthiness, a carbon fiber sandwich panel composite structure with polypropylene foam core is manufactured, tested and simulated to study its mechanical performance. Then a multi-objective optimization is carried out on the thickness of facial sheets and foam core and the density of foam core to get the optimum scheme of thickness and density. Finally, the structure is applied to a car roof, with a topology optimization based on desity method conducted on the distribution of foam core for reducing roof mass while assuring its energy-absorbing characteristics. The results of roof crush test show that the stiffness and energy absorption performance of the car roof structure with optimized sandwich panel are obviously improved with a significant reduction in mass, meeting the crashworthiness and lightweight requirements of the vehicle.

Key words: carbon fiber sandwich panel with polypropylene foam core, multi-objective optimization, topology optimization, crashworthiness, lightweight

Cui An, Xu Xiaoqian, Sun Wenlong, Yang Weili, Huang Xianqing, Liu Tianci. Study on Crashworthiness Optimization of Carbon-fiberSandwich Panel Structure with Polypropylene Foam Core[J].Automotive Engineering, 2020, 42(6): 840-846.

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Study on Crashworthiness Optimization of Carbon-fiberSandwich Panel Structure with Polypropylene Foam Core

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