| 基于非J控制扩展的安全评定方法 |
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| 引用本文： | 王波,杨卫,黄克智.基于非J控制扩展的安全评定方法[J].力学学报,1992,24(3):339-349. |
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| 作者姓名： | 王波 杨卫 黄克智 |
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| 作者单位： | 北京航空航天大学飞机设计所，100083 |
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| 基金项目： | 国家自然科学基金，国家核安全局项目成果 |
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| 摘 要： | 本文研究了非J控制扩展条件下,材料符合塑性增量理论的断裂参量(?)_1积分;并由高玉臣和黄克智的解和(?)_1积分建立了断裂评定参量裂纹尖端张开角CTOA的理论表达式,在详细弹塑性有限元计算和大型CT试件的裂纹扩展过程实测的基础上,建立了非J控制扩展条件下的弹朔性断裂的安全评定方法。
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| 关 键 词： | 非J控制扩展 J1积分 弹塑性断裂 |
STRUCTURE INTEGRITY ASSESSMENT BASED ON NON-J-CONTROLLED GROWTH |
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| Wang Bo Yang Wei Hwang Kehchih.STRUCTURE INTEGRITY ASSESSMENT BASED ON NON-J-CONTROLLED GROWTH[J].chinese journal of theoretical and applied mechanics,1992,24(3):339-349. |
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| Authors: | Wang Bo Yang Wei Hwang Kehchih |
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| Abstract: | In the present paper, a j1-integral is investigated for a material characterized by an incremental plasticity model under the non-J-conirolled crack growth situation. Based on the Gao-Hwang solution of the near-tip fieid and the concept of ji-integral, an analytical relation linking CTOA and j1 is established. A detailed numerical simulation and the experimental program for CT specimen with the large size are performed A structure integrity assessment approach based on elastic-plastic fracture under the non-7-controlled growth is proposed. |
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| Keywords: | non-J-controlled J1-integel CTOA elastic-plastic fracture |
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