Brittle-damage analysis of cracks under conditions of plane-strain tensile loading
Brittle-damage analysis of cracks under conditions of plane-strain tensile loading
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平面应变拉伸载荷条件下裂纹的脆性损伤分析
DOI：
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发表时间：
1995
期刊：
影响因子：
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通讯作者：
Yang Wei
中科院分区：
文献类型：
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作者：
G. Tianfu;Yang Wei
采用充分考虑有限几何变化的突然损伤模型，研究了小尺度屈服条件下平面应变拉伸裂纹的损伤区域形状和应力场。采用单元消失技术模拟了两种典型的裂纹尖端损伤形态。用能量释放率来计算损伤耗散引起的断裂韧性增量
An abrupt damage model, taking full account of finite geometry changes, is used to study both the shapes of damage zones and the stress strain fields for a plane-strain tensile crack under the small-scale yielding condition. Two typical crack-tip damage profiles are simulated by the element vanish technique. The fracture toughness increment due to damage dissipation is evaluated in terms of the energy release rate