《机床与液压》 Hydromechatronics Engineering

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稿件标题: Automobile - Occupant- Guardrail Coupling Collision System Model and Safety Performance
稿件作者: ZHANG Yong,OU Jian,DENG Guohong
关键字词: automobile, guardrail,collision, coupling,finite element
文章摘要: To improve the collision resistance of guardrail, the ideal motion rule of automobile and collision-proof mechanism of guardrail is studied in process of that automobile collides with guardrail. In LS-DYNA software platform, based on the structure parameters of automobile and Safety Performance Evaluation Standards of Expressway Guardrail, the finite element model of “automobile-occupant-guardrail” collision coupling system is established. Collision simulation result shows that, the guardrail absorbs 62.2% kinetic energy by deforming, which plays a favorable role in guiding. The departure angle of automobile is 8.2°, and the secondary accident could be avoided effectively. The maximum transversal deformation of guardrail is 750mm; dummy’s head performance index HPC is 508; dummy’s chest performance index THPC is 25.2mm; dummy’s leg performance index FPC is 1.15kN; all of these performance indexes are smaller than standard value defined in the regulation, so the occupant will not
收录刊物: 2012.12
稿件基金:
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