610 ウレタンならびにウレタン充填部材の動的変形特性(GS-3 計測・動的問題)

概要

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In this paper, dynamic properties of urethane foam and foam filled metal tube were experimentally investigated. Strain rate sensitivities of the strength of urethane foams of various relative densities were evaluated through dynamic compression tests performed using High Speed Material Testing System Based on Sensing Block Method. Yield condition of urethane foam was identified through both uniaxial compression tests and closed-die compression tests. The ratio of the dynamic absorbed energy per unit weight of a foam filled tube to that of a hollow tube was investigated using dynamic buckling test device. From experimental results, it was found that this ratio reached 1.0- 2.8 and became larger with decreasing thickness of the tube and increasing density of the urethane foam.
一般社団法人日本機械学会の論文
2001-03-16