落下試験による爆発衝撃模擬手法に関する研究

抄録

The shock due to the blast causes a large acceleration on an object in very short time. In order to obtain such a blast load, it is necessary to perform an explosion experiment. However, it is not easy to perform a blast experiment. The purpose of this research is to reproduce the large acceleration of the blast by collision of the ground due to fall instead of blast experiment. First, the acceleration of the steel block acting on a blast load was measured. Next, the same steel block was dropped from a certain height, and the acceleration of collision with the ground was measured. We calculated the impulse obtained from the acceleration at collision with ground and decided the drop height so as to be equal to the impulse of the explosion. We set blocks of three types of top shapes and three types of materials on the ground. As a result, it shows a sharp steel block is suitable in order to obtain the acceleration as a substitute for blast experiments.