ウィスカ強化アルミニウム合金の破壊解析 : 第2報,ウィスカの非均一分布の影響の検討

The fracture process of a whisker-reinforced aluminum alloy is simulated by the finite-element analysis using Gurson's model as a constitutive equation. The results show that the dimple fracture process after a large amount of plastic deformation is well simulated. It is found that the local nonuniform distribution of whisker fiber has a large effect on the quantitative evaluation. Its effect is studied by changing the whisker location and whisker fiber volume fraction on nonuniform models. The constraint effect and the effect of the debonding between the matrix and the whisker fiber are also considered.