| 对JIC断裂准则的一种改进 |
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| 引用本文： | 郑茂盛,张忠平,周根树.对JIC断裂准则的一种改进[J].西安交通大学学报,1999,33(4):52-56. |
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| 作者姓名： | 郑茂盛 张忠平 周根树 |
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| 作者单位： | 1. 西安交通大学,710049,西安
2. 西安,空军工程学院 |
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| 摘 要： | 基于近年来在裂纹尖端塑性内应力应变分布、损伤和断裂的塑性消耗特征等方面的所做的研究工作，对传统断裂准则进行了改进，提出了一种考虑了构件几何及应力三轴性的新的断裂准则。由一系列几何尺寸的紧凑拉试验的验表明，理论预言与实验测量结果符合得委好。
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| 关 键 词： | 裂纹 损伤力学 韧性断裂准则 断裂 应力 应变 |
A Modified Fracture Criterion for JIC |
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| Zheng Maosheng,Zhang Zhongping,Zhou Genshu.A Modified Fracture Criterion for JIC[J].Journal of Xi'an Jiaotong University,1999,33(4):52-56. |
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| Authors: | Zheng Maosheng Zhang Zhongping Zhou Genshu |
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| Abstract: | Damage mechanics and stress strain concentration behavior of notched component are employed to develop a fracture criterion for engineering materials. A modified J integral criterion is proposed. It includes the effects of structural component geometry and stress triaxiality and makes use of test results of small laboratory specimens. Tests of single edge crack specimen with different crack length are made to support the proposed model. |
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| Keywords: | crack damage mechanics fracture criterion |
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