面内方向衝撃を受ける平板の破壊 : 引張応力波の集中と衝撃破壊パターン

概要

論文の詳細を見る
In the present study, impact fracture patterns of plates subjected to an impulsive load are investigated by means of experiments and numerical simulations. The center of the free edge of a rectangular plate with uniform thickness is subjected to an impulsive load in the in-plane direction while the opposite edge and both side edges are free from stress. The impact fracture experiments are performed with plaster plates of several dimensions and length-width ratios. The features of fracture patterns which occurred in the plates are discussed. Numerical analyses for several fracture patterns are carried out based on a dynamic finite element method using the Newmark-β method. It is made clear that the origin of the fractures mainly corresponds to the regions of dynamic tensile stress concentration due to stress wave reflection and reinforcement from the back edge and both sides of the plate.
社団法人日本機械学会の論文
1993-05-25