TY - GEN
T1 - Design and analysis of automotive bumper covers in transient loading conditions
AU - Liu, Chih Hsing
AU - Huang, Ying Chia
AU - Chiu, Chen Hua
AU - Lai, Yu Cheng
AU - Pai, Tzu Yang
N1 - Publisher Copyright:
© 2016 Trans Tech Publications, Switzerland.
PY - 2016
Y1 - 2016
N2 - This paper presents the analysis methods for design of automotive bumper covers. The bumper covers are plastic structures attached to the front and rear ends of an automobile and are expected to absorb energy in a minor collision. One requirement in design of the bumper covers is to minimize the bumper deflection within a limited range under specific loadings at specific locations based on the design guideline. To investigate the stiffness performance under various loading conditions, a numerical model based on the explicit dynamic finite element analysis (FEA) using the commercial FEA solver, LS-DYNA, is developed to analyze the design. The experimental tests are also carried out to verify the numerical model. The thickness of the bumper cover is a design variable which usually varies from 3 to 4 mm depending on locations. To improve the stiffness of the bumper, an optimal design for the bumper under a pre-defined loading condition is identified by using the topology optimization approach, which is an optimal design method to obtain the optimal layout of an initial design domain under specific boundary conditions. The outcome of this study provides an efficient and cost-effective method to predict and improve the design of automotive bumper covers.
AB - This paper presents the analysis methods for design of automotive bumper covers. The bumper covers are plastic structures attached to the front and rear ends of an automobile and are expected to absorb energy in a minor collision. One requirement in design of the bumper covers is to minimize the bumper deflection within a limited range under specific loadings at specific locations based on the design guideline. To investigate the stiffness performance under various loading conditions, a numerical model based on the explicit dynamic finite element analysis (FEA) using the commercial FEA solver, LS-DYNA, is developed to analyze the design. The experimental tests are also carried out to verify the numerical model. The thickness of the bumper cover is a design variable which usually varies from 3 to 4 mm depending on locations. To improve the stiffness of the bumper, an optimal design for the bumper under a pre-defined loading condition is identified by using the topology optimization approach, which is an optimal design method to obtain the optimal layout of an initial design domain under specific boundary conditions. The outcome of this study provides an efficient and cost-effective method to predict and improve the design of automotive bumper covers.
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U2 - 10.4028/www.scientific.net/KEM.715.174
DO - 10.4028/www.scientific.net/KEM.715.174
M3 - Conference contribution
AN - SCOPUS:84990855917
SN - 9783038355601
T3 - Key Engineering Materials
SP - 174
EP - 179
BT - Proceedings of the 9th International Symposium on Impact Engineering
A2 - Lee, Woei-Shyan
A2 - Chang, I-Ling
A2 - Chang, Shou-Hung
PB - Trans Tech Publications Ltd
T2 - 9th International Symposium on Impact Engineering, ISIE 2016
Y2 - 5 September 2016 through 9 September 2016
ER -