Design and analysis of automotive bumper covers in transient loading conditions

Chih Hsing Liu, Ying Chia Huang, Chen Hua Chiu, Yu Cheng Lai, Tzu Yang Pai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)


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.

Original languageEnglish
Title of host publicationProceedings of the 9th International Symposium on Impact Engineering
Subtitle of host publicationRecent Advances in Impact Engineering
EditorsWoei-Shyan Lee, I-Ling Chang, Shou-Hung Chang
PublisherTrans Tech Publications Ltd
Number of pages6
ISBN (Print)9783038355601
Publication statusPublished - 2016
Event9th International Symposium on Impact Engineering, ISIE 2016 - Tainan, Taiwan
Duration: 2016 Sep 52016 Sep 9

Publication series

NameKey Engineering Materials
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795


Other9th International Symposium on Impact Engineering, ISIE 2016

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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