CRASHWORTHINESS ANALYSIS OF CARBON FIBER AUTOMOBILE B-PILLAR BASED ON EQUAL STIFFNESS PRINCIPLE

Abstract

Abstract: The use of carbon fiber reinforced composites (CFRP) with higher energy absorption ratio to replace the original metal automobile B-pillar is a useful exploration to realize the lightweight of the whole vehicle, and is of great significance for the replacement of automobile structural parts. The carbon fiber reinforced composite material B-pillar was designed based on the principle of equal stiffness, and the finite element collision model of B-pillar and moving column was established. By comparing and analyzing the intrusion amount and the intrusion speed difference of the moving column at different impact points of the B-pillar at the impact velocity of 7.2 km/h. The results show that compared with the original high-strength steel B-pillar, the carbon fiber composite B-pillar has less deformation at low speed impact, more energy absorption and better crashworthiness. At the same time, compared with the high-strength steel B-pillar, a mass reduction of 26.27% is realized, which could better meet the automotive B-pillar lightweight requirements.

Key words: equal stiffness principle, CFRP, automobile B-pillar, lightweight, crashworthiness analysis

CLC Number:

TB332

SUN Dong-ming, MA Qi-hua,SUN Jia-rui. CRASHWORTHINESS ANALYSIS OF CARBON FIBER AUTOMOBILE B-PILLAR BASED ON EQUAL STIFFNESS PRINCIPLE[J]. Fiber Reinforced Plastics/Composites, 2018, 0(11): 58-63.

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