Optimisation study of occupant restraint system concerning variations in occupant size and crash severity in frontal collisions

Yi Huang, Qing Zhou, Xiaowei Zhang, Cong Wang

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Restraint system parameter configurations encouraged by the current legislative or consumer crash tests cannot provide tailored protection to occupants with different statures under various crash severities. The restraint system parameters should be adapted to different circumstances. In this study, a restraint system optimisation framework was built to explore optimal configurations for five different sizes of occupants in two crash severities. Seat position was treated as a variable in the design space. The optimisation results showed that optimal seat positions had clear patterns for the two crash severities. In high crash severity, dummies tended to sit closer to the knee bolster to achieve better contacts of airbag and knee bolster. In low crash severity, optimal seat positions were farther from knee bolster. With aggressively tuned pretensioner and stature dependent load limiting values, the dummies were efficiently restrained by the seat belt. Tailored protections to the ten cases were achieved after the optimisation, compared to the fixed parameter restraint system.

Original languageEnglish (US)
Pages (from-to)299-313
Number of pages15
JournalInternational Journal of Vehicle Safety
Volume8
Issue number4
DOIs
StatePublished - 2015
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Automotive Engineering

Keywords

  • Frontal collision
  • Optimisation
  • Passenger side
  • Restraint system
  • Seat position

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