Energy absorption characteristics of lightweight structural member by stacking conditions

Juho Choi; Yongjun Yang; Woochae Hwang; Seokbeom Pyeon; Hanki Min; Ingoo Yeo; Inyoung Yang

doi:10.1117/12.923322

12 April 2012 Energy absorption characteristics of lightweight structural member by stacking conditions

Juho Choi, Yongjun Yang, Woochae Hwang, Seokbeom Pyeon, Hanki Min, Ingoo Yeo, Inyoung Yang

Proceedings Volume 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering; 84092V (2012) https://doi.org/10.1117/12.923322
Event: Third International Conference on Smart Materials and Nanotechnology in Engineering, 2011, Shenzhen, China

Abstract

The recent trend in vehicle design is aimed at improving crash safety and environmental-friendliness. To solve these issues, the needs for lighter vehicle to limit exhaust gas and improve fuel economy has been requested for environmental-friendliness. Automobile design should be made for reduced weight once the safety of vehicle is maintained. In this study, composite structural members were manufactured using carbon fiber reinforced plastic (CFRP) which are representative lightweight structural materials. Carbon fiber has been researched as alternative to metals for lightweight vehicle and better fuel economy. CFRP is an anisotropic material which is the most widely adapted lightweight structural member because of their inherent design flexibility and high specific strength and stiffness. Also, variation of CFRP interface number is important to increase the energy absorption capacity. In this study, one type of circular shaped composite tube was used, combined with reinforcing foam. The stacking condition was selected to investigate the effect of the fiber orientation angle and interface number. The crashworthy behavior of circular composite material tubes subjected to static axial compression under same conditions is reported. The axial static collapse tests were carried out for each section member. The collapse modes and the energy absorption capability of the members were analyzed.

Citation Download Citation

Juho Choi, Yongjun Yang, Woochae Hwang, Seokbeom Pyeon, Hanki Min, Ingoo Yeo, and Inyoung Yang "Energy absorption characteristics of lightweight structural member by stacking conditions", Proc. SPIE 8409, Third International Conference on Smart Materials and Nanotechnology in Engineering, 84092V (12 April 2012); https://doi.org/10.1117/12.923322

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KEYWORDS

Absorption

Foam

Safety

Carbon

Composites

Interfaces

Structured optical fibers

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