構造物の衝撃問題における質量と衝突角度が衝撃応答に及ぼす影響の検討

概要

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In the impact problem of civil and architectural structures, mass ratio of colliding body to collided structures and impact angle of colliding body to the structure are important for evaluation of impact response of the collided structure. In this study, parametric analyses of mass ratio and impact angle using finite element method were executed in terms of rebound velocity of colliding body for impact problems dealt with so far by the authors. Finally, prediction analyses(round-robin analysis) of reinforced concrete beams of actual size were performed using a simple one mass model subjected to impact loads obtained assuming coefficient of restitution due to drop of a heavy weight. Consequently, rebound velocity of colliding body markedly changed with the mass ratio and colliding angle and therefore the impact response of the structures might greatly change. The impact response of the beam could be well predicted by the simple model.
2007-03-30