Effects on Living Tissues Induced by Shock Waves : 2nd Report, Numerical Analysis of a Propagating Pressure Wave toward Living Tissue

Abstract

This paper describes pressure wave analysis to examine effects of shock waves on living tissues. From the comparison of the displacement of the living Tissue model by FEM with that obtained by the experiment, the dynamic properties of the kidney are determined. Using these properties of the living tissues in the solid-state equation, the flow field in two layers that consist of air and living tissue, and that in three layers that consist of air, water, and living tissue is numerically obtained. It is found that gradient of pressure waves is living tissue is smaller than that of pressure wave in air and water. Hence, the effect of living tissue depends on the relaxation of pressure waves and duration time of exposure.