Research and Application of Dynamic Equation for Full Frontal Impact
Sheng Tian
(School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China)
Abstract:
Full frontal impact theory needs researching and exploring to satisfy the primary safety design of occupant restraint system, avoiding the increasingly “engineering” trend in order to develop and design safety vehicle. After occupant restraint system is simulated by using linear elastic stiffness k, the occupant-vehicle frontal rigid barrier impact model is established. Dynamic equation of dummy chest coupling vehicle is built for full frontal impact based on ordinary vehicle deceleration by Hooke law, and the equation is solved by comparing coefficient and satisfying boundary qualifications. While relative vehicle characteristic parameters are kept unchanging, the actual vehicle deceleration is fitted to the simplified equivalent square wave(ESW), tipped equivalent square wave (TESW) and equivalent dual trapezoids wave (EDTW). Phase angle and amplitude A of dynamic equations based on ESW, TESW and EDTW are calculated and deduced. The results show that: the dynamic equation of dummy chest coupling vehicle can be well utilized to instruct the primary safety design of full frontal impact for objective vehicle to satisfy chest deceleration demands and the equation based on TESW is best for this design.
Key words: vehicle engineering full frontal impact dynamic equation deceleration simplified wave occupant restraint system
DOI：10.11916/j.issn.1005-9113.2015.03.015
Clc Number:U461.91
Fund:
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Research and Application of Dynamic Equation for Full Frontal Impact
本站小编 哈尔滨工业大学/2019-10-23
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