LIGHTWEIGHT RESEARCH ON BUMPER BEAM OF FIBER REINFORCED COMPOSITE

Abstract

Abstract: Two kinds of fiber reinforced composite materials-Long Glass Fiber Reinforced Thermoplastics (LGFT) and Carbon Fiber Reinforced Plastic (CFRP) have been studied regarding their lightweight application on vehicle bumper beam. Mechanical properties tests of the LGFT and CFRP materials have been carried out to obtain their simulation parameters. The aluminum alloy of the original bumper beam is replaced by these composite materials with the method of equivalent stiffness to evaluate the performance of crashworthiness and lightweight according to the rules of low-speed impact. The results show that, for satisfying the requirements of the crashworthiness performance, the LGFT can decrease the bumper mass by 11.2% and the CFRP can decrease the bumper mass by 46.1%, so the lightweight effect of both composite materials is evident. Therefore, on the method of equivalent stiffness design, fiber reinforced composite materials are more favorable to meet lightweight requirements of the bumper beam.

Key words: bumper beam, LGFT, CFRP, lightweight, crashworthiness

CLC Number:

TB332

ZHANG Hai-yang, MO Fu-hao, XIAO Zhi, LI Bei. LIGHTWEIGHT RESEARCH ON BUMPER BEAM OF FIBER REINFORCED COMPOSITE[J]. Fiber Reinforced Plastics/Composites, 2017, 0(10): 34-40.

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