Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (1): 134-140.doi: 10.3969/j.issn.1000-565X.2011.01.025

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

 Fitted Wave-Based Comparison and Calculation of  Chest Deceleration Due to Frontal Impact

Tian Sheng1,2 Huang Xiang-dong1,3 Yang Man3 Chen Jin-hua1,3   

  1. 1. The south China university of technology, mechanical and automotive engineering school, guangdong guangzhou 510640;2. South China university of technology of civil and traffic institute, guangdong guangzhou 510640; 3. Guangzhou automobile group automotive engineering institute, guangdong guangzhou 510640
  • Received:2010-08-18 Revised:2010-10-14 Online:2011-01-25 Published:2010-12-01
  • Contact: 田晟(1969一)，男，在职博士生，副教授，主要从事汽车运用工程及交通安全研究 E-mail:shitian1@scut.edu.cn
  • About author:田晟(1969一)，男，在职博士生，副教授，主要从事汽车运用工程及交通安全研究
  • Supported by:

    国家自然科学基金资助项目(50975091)

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Abstract:

In the safety design of vehicle structure and occupant restraint system upon frontal impact, the complicated deceleration should be fitted into a simplified wave. In this paper, three simplified waves including equivalent square wave （ESW）, tipped equivalent square wave （TESW） and equivalent double-trapezoid wave （EDTW） are investigated, finding out that the velocity and displacement curves integrated from EDTW accord well with the actu- al ones, and that the chest deceleration peak based on TESW is most close to the actual one. Moreover, a scheme of designing the objective vehicle using the wrap around line of EDTW and the average of TESW is presented. With this scheme, both the vehicle structure based on EDTW and the occupant restraint system based on TESW are designed. It is found that the simplified fitted waves TESW and EDTW can be well applied to the primary safety design of objective vehicle upon frontal impact to satisfy the demand of chest decelarntion

Key words: full frontal impact, simplified wave, chest deceleration, vehicle structure