812 境界要素法による多角形不均質物の弾性波散乱解析(オーガナイズドセッション : 計算力学と構造設計)

概要

論文の詳細を見る
The determination of scattering cross sections of non-ellipsoidal inhomogeneities are of great importance in connection with ultrasonic evaluation of composite materials and other inhomogeneous materials. In this study, scattering cross sections of a regular polygonal inhomogeneity (triangular, square, pentagonal and hexagonal shapes) in an infinite matrix are calculated by Boundary Element Method (BEM). It is found that scattering cross sections are affected strongly by their shapes, but are independent of their orientation except for square inhomogeneity. This phenomenon has close resemblance to the static inclusion case revealed numerically by Nozaki and Taya [ASME J, Appl. Mech. 64 (1997), 495-502] and proven mathematically by Kawashita and Nozaki [submitting to J. Elasticity].
一般社団法人日本機械学会の論文
2001-09-20