OS0113 自動車用衝撃吸収部材に関する研究(OS1-3 き裂と破壊,OS-1 実験力学と計測技術1)

概要

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A fuel-efficient auto mobile with low weight is requested due to the environmental issues considerations. However automobiles showing good resistance and fuel efficiency are usually heavy. Thus the combination of a fuel-efficient, low weight and safe car is complex. Therefore the development of a crash box with high shock absorption capability per unit mass and possessing a low weight is essential in order to satisfy the two contradictory requirements: safety and fuel-efficiency. The evaluation of crash boxes performances can be simulated thanks to Computer Aided Engineering (CAE). Unfortunately computational simulations are not sufficient and collision test have also to be performed. A drop test machine is often used for the collision test because high speed can be reached, but there is some problem that this kind of facility requires a large place for its installation. Our aim is to develop and improve the collision test machine by using a powder gun. The latter needs less space than drop test machine. And it can generate comparatively high energy, which is essential for recreate the most accurate environment as possible to simulate at best a real crash. The obtained results will then be used to establish and develop effective techniques for crash box testing.
2011-07-16