Optimization and Performance Analysis of CFRP Automotive B-pillar Reinforced Plate
Abstract
Abstract:
This study starts from setting up the finite element simulation model of B-pillar assembly. Then, the size, free size and laminate orientation of carbon fiber composite B-pillar reinforced plate were optimized based on the principles of constant stiffness. Maximum strength and displacement of the assembly were obtained through Finite Element (FE) simulation of quasi-static three-point bending test on B-pillar assembly. B-pillar sample was fabricated by a Vacuum Infusion Process (VIP) and conducted on a three-point bending test to check the strength index of the B-pillar assembly. Finally, according to 2018 C-NCAP standards, side impact performance of vehicle was elaborated. The comparison results among stiffness, flexural property, side impact intrusion, intrusion velocity and acceleration indicate that the optimization design of CFRP can replace the original B-pillar steel reinforced plate under the premise of ensuring rigidity, strength and side impact performance. CFRP B-pillar reinforcement plate is 1.376kg lighter than that of the conventional one, and the weight loss ratio is up to 76.4%.
Keywords: Carbon Fiber Reinforced Plastic（CFRP), lightweight, B-pillar reinforcement plate, optimization
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MA F W，CHEN S X，ZHAO H L，et al. Lightweight on frame of FSC with constraints of strength，stiffness and modal[J] . Journal of Hunan University （Natural Sciences），2018，45 （4）：18—25.（In Chinese）
GUO Y Q，HUANG X Z，WANG S，et al. Development of carbon fiber engine hood based on the equal stiffness principle [J] . Automobile Applied Technology，2017（19）：100—103.（In Chinese）
WANG Q，LU J H，LIU Z，et al. A lightweight design of carbon fiber reinforced plastic auto bumper[J] . Journal of Shanghai Jiao tong University，2017，51（2）：136—141.（In Chinese）
BOTKIN M E. Modeling and optimal design of a carbon fiber reinforced composite automotive roof[J] . Engineering with Computers， 2000，16（1）：16—23.
YOO S H，DOH J，LIM J，et al. Topologically optimized shape of CFRP front lower control ARM [J] . International Journal of Automotive Technology，2017，18（4）：625—630.
KIM D H，JUNG K H，KIM D J. Improving pedestrian safety via the optimization of composite hood structures for automobiles based on the equivalent static load method [J] . Composite Structures， 2017，176：780—789.
KIM D H，KIM H G，KIM H S. Design optimization and manufacture of hybrid glass/carbon fiber reinforced composite bumper beam for automobile vehicle[J] . Composite Structures，2015，131：742— 752.
LI Y J，LEI F，LIU Q M，et al. Optimization of composite B-pillar with considerations of structures，materials and processes requirements [J] . Automotive Engineering，2017，39 （8）：968—976.（In Chinese）
ZHAO Y Y，LI H，LI M，et al. Hot stamping process of high - strength -steel for automotive B -pillar [J] . Forging & Stamping Technology，2017，42（2）：66—71.（In Chinese）
LIU Q M，LI Y，CAO L，et al. Structural design and global sensitivity analysis of the composite B-pillar with ply drop-off[J] . Structural & Multidisciplinary Optimization，2018，57（3）：965—975.
ASTM D3410 Standard test method for compressive properties of polymer matrix composite materials[S] . ASTM International，2009.
ASTM D3039 Standard test method for tensile properties of polymer matrix composite materials[S] . ASTM International，2014.
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