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汽车安全与节能学报

汽车安全与节能学报 ›› 2013, Vol. 4 ›› Issue (3): 215-222.DOI: 10.3969/j.issn.1674-8484.2013.03.003

• 汽车安全 • 上一篇    下一篇

负泊松比安全带织带乘员碰撞保护性能的FE 仿真

亓昌，安文姿，杨姝   

  1. 大连理工大学 汽车工程学院数字化汽车研究所，大连 116024，中国
  • 收稿日期:2013-05-12 出版日期:2013-09-25 发布日期:2013-06-27
  • 作者简介:亓昌（1978—），男（汉），陕西，副教授。
  • 基金资助:

    国家自然科学基金（50905024，51105053）；辽宁省自然科学基金（20102026）；高等学校博士点基金
    （20090041120032，20110041120022）；中央高校基本科研业务费项目（DUT13LK47）

FE simulation of the occupant crash protection performance of the negative Poisson's ratio seat belt webbing

QI Chang, AN Wenzi, YANG Shu   

  1. Digital Vehicle Engineering Institute, School of Automotive Engineering, Dalian University of Technology,
    Dalian 116024, China
  • Received:2013-05-12 Online:2013-09-25 Published:2013-06-27

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摘要： 为减轻汽车碰撞事故中安全带可能造成的乘员伤害，提出了具有负泊松比(NPR) 特性的安全
带织带的概念。建立了包含人体胸部简化模型的织带性能仿真有限元模型。对比了NPR 织带与传统
织带的乘员保护效能；研究了泊松比、摩擦因数对NPR 织带保护效能的影响；Madymo 假人碰撞仿真，
验证了NPR 织带的有效性。结果表明：与传统织带相比，NPR 织带能有效减小乘员胸部压缩变形量；
泊松比越小，保护效能越佳；而胸部与织带间的摩擦不利于NPR 织带保护效能的发挥。

关键词: 汽车安全, 乘员保护, 安全带织带, 负泊松比(NPR) , 有限元（FE）仿真

Abstract: A concept of seat belt webbing with negative Poisson's ratio (NPR) characteristic was proposed
for mitigating the harm to occupants by the seat belt in car-crash accidents. A finite element (FE) model with a
simplified human chest model was established and used for webbing performance simulation. The occupant
protection performances of NPR webbing were compared with that of the traditional webbing. The effects of
Poisson’s ratio and friction coefficient on the NPR webbing’s performance were investigated. The effectiveness
of the NPR webbing was verified by MADYMO dummy crash simulation. The results indicate that compared with
the traditional seat belt webbing, the NPR webbing can effectively reduce the occupant chest deflection; the
smaller the Poisson’s ratio, the better the protection performance; friction between the occupant chest and the
NPR webbing is not conducive to the effectiveness of the NPR webbing.

Key words: automotive safety, passenger protection, seatbelt webbing, negative Poisson’s ratio (NPR), finite element (FE) simulation

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