In order to gain a basic knowledge for formulating material constitutive model of the sand cushion, a large-scale falling-weight impact test was conducted varying thickness of the sand cushion and falling height as variables. Here, special apparatus was made to accurately measure the transmitted impact force, and high-speed motion camera was also used to capture the movement of the weight. The results obtained from this study were as follows: 1) In the case of a thin sand layer, both impact force and transmitted impact forces are similarly behave and these maximum impact forces are almost equal to each other; and 2) the thicker the sand layer thickness, the larger the maximum transmitted impact force than that of the weight impact force is.
敷砂緩衝材の緩衝特性に関する大型重錘落下衝撃実験
JSE_59A_967_976
(1.92MB)
