応力集中部近傍を進展する疲労き裂のシミュレーション

概要

論文の詳細を見る
The fatigue crack propagation path of an aluminum alloy specimen possessing slight anisotropic mechanical properties was investigated. The crack path was also estimated using the finite-element method based on the maximum energy release rate. The results are as follows : (1) It is possible to estimate the crack path based on the maximum energy release rate ; (2) As the constraint condition sensitively affects the crack path, an accurate setup is necessary for the correct estimation : (3) As the elastic modulus of the specimen used in this experiment does not change greatly, no effect of anisotropy appears in the crack propagation rate. The slight difference of the modulus of elasticity, however, sensitively affects the crack path, and it is necessary to measure the accurate value of an elastic modulus for the estimation of the crack propagation path : (4) The effect of the anisotropy more sensitively appears in the case a complex mode condition than in that of a simple model condition.
社団法人日本機械学会の論文
1991-07-25