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以商业有限元分析软件ABAQUS为平台,基于GTN金属断裂模型对TC4钛合金光滑圆形试样和两种不同缺口形状试样在单向拉伸试验中的渐进破坏过程进行数值研究,同时对比分析了几何非线性的影响在数值计算中的差异。结果表明,该模型预测TC4钛合金试样单向拉伸试验的载荷-位移曲线及宏观断裂形貌与真实试验结果基本一致。
Based on the commercial finite element analysis software ABAQUS, the progressive failure process of TC4 titanium alloy smooth circular specimen and two different notched shape specimens in uniaxial tensile test was studied based on the GTN metal fracture model. At the same time, comparative analysis The difference of geometric nonlinearity in numerical calculation. The results show that this model predicts that the load-displacement curve and the macroscopic fracture morphology of TC4 uniaxial tensile test are in good agreement with the real test results.