軟質材の衝突により生じる荷重の近似的評価

概要

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In the present paper, histories of impact loads due to collision of a soft body on a rigid wall are estimated by simplified analysis based on impulse momentum balance. Soft bodies can be classified into two groups : elastic material with low elastic modulus and plastic material with low yield stress. The history of the impact load in the case of elastic material is computed considering one dimensional elastic wave propagation. The load in the case of plastic material is computed on the assumption that the material behaves as Newtonian liquid for low impact velocity and perfect liquid for high impact velocity compared with the plastic wave. The soft bodies in the experiments are selected : silicon rubber as elastic material, clay and gelatin as plastic materials. The analytical results of the impact loads agree with experimental results approximately.
社団法人日本機械学会の論文
1999-07-25