引張パルス波を受ける二重き裂部材の破壊開始条件について

概要

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This paper is concerned with the dynamic fracture criterion of a double-cracked Plate which is made of epoxy resin. To deduce the crack propagation criterion of the double-cracked plate, we analyze the diffraction of a plane-dilatational wave by a finite line crack using the dynamic finite-element method and carry out a fracture experiment for the double-cracked plate. In the experiment, a tensile pulse wave, whose height and width are controlled, is generated by an impact apparatus and travels through the plate. The behavior of stress wave in the plate and the crack propagation phenomenon are analyzed by the photoelastic technique using the high-speed camera. The dynamic finite-element method is also used to estimate the stress-intensity factors at the double crack tips. From these experimental and numerical results, the crack propagation criterion of the double-cracked plate is considered.
一般社団法人日本機械学会の論文
1990-07-25