| 幂硬化材料平面应力裂纹稳定扩展的有限元模拟 |
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| 引用本文： | 朱文浩.幂硬化材料平面应力裂纹稳定扩展的有限元模拟[J].航空学报,1995,16(2):120-125. |
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| 作者姓名： | 朱文浩 |
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| 作者单位： | 华中理工大学力学系 |
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| 摘 要： | 对幂硬化材料中平面应力Ⅰ型裂纹的稳定扩展进行了有限元模拟。计算中采用了逐步释放裂尖节点力法和子结构方法并配合裂尖附近高密度的网格划分，获得了有关裂尖应力变形场、塑性区尺寸、裂纹开口位移、裂纹扩展阻力等大量资料。计算结果还证实了部分已有的裂尖场渐近解。
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| 关 键 词： | 裂纹扩展 有限元法 裂纹抑制 |
A FINITE ELEMENT SIMULATION OF STABLE CRACK PROPAGATION IN POWER LAW HARDENING MATERIALS UNDER PLANE STRESS |
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| Zhu Wenhao.A FINITE ELEMENT SIMULATION OF STABLE CRACK PROPAGATION IN POWER LAW HARDENING MATERIALS UNDER PLANE STRESS[J].Acta Aeronautica et Astronautica Sinica,1995,16(2):120-125. |
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| Authors: | Zhu Wenhao |
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| Institution: | Dept. of Mech.,Huazhong University of Science &; Technology,Wuhan, 430074 |
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| Abstract: | A detailed finite element analysis of stable crack growth in power law hardening materials is performed under mode-I plane stress condition. A nodal release procedure and a substructure method are used, combining with a very fine mesh near the crack tip. Detailed numerical results for the near-tip stress and deformation fields, plastic zone, crack opening displacement, propagation resistance, etc. are presented and comparisons are made with existing analyses. |
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| Keywords: | crack propagation finite element method crack arrest |
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