Welcome to Journal of Automotive Safety and Energy,
汽车安全与节能学报

Journal Of Automotive Safety And Energy ›› 2019, Vol. 10 ›› Issue (3): 308-316.DOI: 10.3969/j.issn.1674-8484.2019.03.006

• Automotive Safety • Previous Articles     Next Articles

Analysis of the optimization trend of restraint system in two car oblique crash

CAO Libo 1,2, ZHANG Chao 1, YAN Lingbo 1*, DAI Hongliang 1, ZHANG Ruifeng 3   

  1. (1.State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha 410082, China; 2. Research Institute at Shenzhen, Hunan University, Shenzhen 518057, China; 3. Graduate School at Shenzhen, Tsinghua University, Shenzhen 518000, China)
  • Received:2019-04-02 Online:2019-09-30 Published:2019-10-01

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Abstract:

Some driver restraint system models were developed for sport utility vehicle (SUV), medium-sized car and small-sized car to explore the optimization trend of restraint system in car-to-car oblique crash of 30°. The restraint system optimizations were conducted based on the sensitivity factors for the subject vehicle, the partner vehicle and the combination with the consideration of crash compatibility by minimizing the sum of weighted injury criterion (WIC) value of both. The results show that to the types of the vehicles mentioned above, there are certain optimization trends for the factors of restraint system: the air bleed area and mass flow of airbag tend to increase, the seatbelt force limit tends to decrease, and the pre-tensioner action time tends to be postponed. During the combined optimization, the parameters’ optimization trend is closer to that of the vehicle with the larger initial WIC value.

Key words: automotive passive safety ,  oblique crash ,  restraint system ,  parameters optimization , crash compatibility