Journal of South China University of Technology(Natural Science Edition) ›› 2012, Vol. 40 ›› Issue (7): 46-50.

• Traffic & Transportation Engineering • Previous Articles     Next Articles

Factors Influencing Injury Risk and Submarining Tendency of Child Occupant

Tang Liang1,2  Wu Tao-tao1,2  Zhou Qing2  Deng Bin3   

  1. 1. School of Technology,Beijing Forestry University,Beijing 100083,China; 2. State Key Laboratory of Automotive Safety and Energy,Tsinghua University,Beijing 100084,China; 3. General Motors China Science Lab,Shanghai 201206,China
  • Received:2012-03-26 Revised:2012-04-24 Online:2012-07-25 Published:2012-06-01
  • Contact: 唐亮(1982-) ，女，博士，讲师，主要从事汽车安全技术与乘员保护研究． E-mail:tang-l04@mails.tsinghua.edu.cn
  • About author:唐亮(1982-) ，女，博士，讲师，主要从事汽车安全技术与乘员保护研究．
  • Supported by:

    国家自然科学基金资助项目( 50975156) ; 北京林业大学中央高校基本科研业务费专项资金资助项目( TD2011-26) ;北京林业大学优秀青年教师科技支持专项( YX201110)

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Abstract:

In this paper,a trolley-crash simulation model of child restraint system,which includes a booster seat,an adult seatbelt system,a vehicle rear seat and a child dummy model,is established based on the multi-rigid-body dynamics software MADYMO. Then,the effects of load limiter and pretensioner of the adult seatbelt system on the impact response and the injury value of child occupant are investigated. The results indicate that the retractor
pretensioner effectively reduces the injury value and the submarining risk of child occupant,while an anchor pretensioner alone may increase the submarining tendency,but an anchor pretensioner combined with an one-way locking tongue can reduce the submarining tendency,that the 4.0kN retractor-type load limiter widely applied in adult injury reduction has no obvious effect on the protection of child occupant,and a lower load level of the adult load limiter provides the best protection for child occupant.

Key words: automotive engineering, crash simulation, child booster seat, submarining, pretensioner, load limiter

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