Multi-objective robust optimization of foam-filled double-hexagonal crash box using Taguchi-grey relational analysis

In this paper, a novel thin-walled double-hexagonal crash box is first proposed and then multi-objective robust optimized for better overall crashworthiness under multi-angle impact loading, using a proposed hybrid method combining aluminum foam-filling and Taguchi-grey relational analysis (GRA). Specifically, the finite element (FE) models of the regularly-shaped double-hexagonal column (DHC) extracted from original irregularly-shaped crash box under multi-angle impact loading, including hollow (H-DHC) and foam-filled (F-DHC), are first built and validated by experiments. On this basis, a comprehensive crashworthiness comparison is conducted to explore relative merits of F-DHC over original H-DHC under multi-angle impact loading. After that, the F-DHC is multi-objective robust optimized for maximizing overall specific energy absorption (SEAθ) and minimizing overall initial peak crushing force (IPCF0) simultaneously under multi-angle impact loading, using a hybrid method of Taguchi-GRA. At last, a bumper-crash box integrated crashworthiness analysis under multi-angle impact loading is executed to further verify the optimization. The optimal F-DHC and the optimized crash box within the optimal F-DHC demonstrate evident improvement of crashworthiness compared to their respective initial designs, indicating aluminum foam-filling combined with Taguchi-GRA could be an effective approach for multi-objective robust optimization of the novel crash box and other similar vehicle structures.

• Record URL:
  • https://doi.org/10.1177/16878132231189070
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/16878132
• Supplemental Notes:
  • © The Author(s) 2023.
• Authors:
  • Xiong, Feng
  • 0000-0001-5277-4778
  • Wang, Zhanfei
  • Wang, Dengfeng
  • Ji, Longbo
  • Wu, Hang
  • Zou, Xihong
• Publication Date: 2023-9

Language

• English

Media Info

• Media Type: Web
• Features: Figures; References; Tables;
• Pagination: 24p
• Serial:
  • Advances in Mechanical Engineering
  • Volume: 15
  • Issue Number: 9
  • Publisher: Sage Publications, Incorporated
  • ISSN: 1687-8132
  • EISSN: 1687-8140
  • Serial URL: https://journals.sagepub.com/home/ade
• Publication flags:

  Open Access (libre)

Subject/Index Terms

• TRT Terms: Crashworthiness; Finite element method; Impact loads; Optimization; Traffic crashes
• Subject Areas: Highways; Safety and Human Factors;

Filing Info

• Accession Number: 01910148
• Record Type: Publication
• Files: TRIS
• Created Date: Feb 27 2024 4:03PM