非線形破壊パラメータT積分の光学的直接計測法開発研究 : 第1報, コースティック像形成過程の数式処理援用数値シミュレーション

概要

論文の詳細を見る
The path-independent T^* integral is valid for any material-constitutive model under quasi-static as well as dynamic conditions. The T^* integral has great potential as a unified crack-tip parameter for various types of fracture mechanics. A series of papers will be presented for research and development of the method of caustics for directly measuring the T^* integral. In this paper, finite element simulation aided by computerized symbolic manipulation was carried out for the formation process of a caustic pattern for an elastoplastic crack-tip in a compact, tension specimen. The computerized symbolic manipulation system (REDUCE) showed great ability to obtain precisely simulated caustic patterns. The relations between the T^* integral and the size of the caustic pattern were obtained for several cases.
一般社団法人日本機械学会の論文
1990-02-25