| 三维弹塑性受剪板表面裂纹的可靠性分析计算 |
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| 引用本文： | 吕震宙,岳珠峰.三维弹塑性受剪板表面裂纹的可靠性分析计算[J].上海力学,1995,16(2):145-151. |
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| 作者姓名： | 吕震宙 岳珠峰 |
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| 作者单位： | 西北工业大学
(吕震宙，岳珠峰)，西北工业大学(冯元生) |
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| 摘 要： | 本文建立了受剪应力表面裂纹塑性失稳扩展的可靠性分析模型。采用三维弹塑性模型对其综合变量Ｊ积分进行了计算，分析了在不同的无量纲裂纹尺寸和外载应力情况下，裂纹失稳扩展的失效概率分布规律，为工程检测和维修提供指导。
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| 关 键 词： | 裂纹 可靠性 弹塑性问题 飞机 结构力学 板材 |
A RELIABILITY ANALYSIS AND CALCULATION OF SURFACE CRACK IN 3-D ELASTO-PLASTIC SHEARING STRESS |
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| Lu Zhenzhou Yue Zhufeng Feng Yuansheng.A RELIABILITY ANALYSIS AND CALCULATION OF SURFACE CRACK IN 3-D ELASTO-PLASTIC SHEARING STRESS[J].Chinese Quarterly Mechanics,1995,16(2):145-151. |
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| Authors: | Lu Zhenzhou Yue Zhufeng Feng Yuansheng |
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| Institution: | Northwestern Polytecbnical University |
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| Abstract: | In this paper, a reliability analysis method for unstable plastic fracture of a surface crack subjected to shearing stress is presented, and 3-D elasto-plastic model is used to compute the J-integral, a synthetic random variable. Distribution laws of the failure probability subjected to different normalized sizes and different normalized loads are studied, which can guide the detection and maintenance for engineers. |
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| Keywords: | Surface crack Reliability Elasto-plastic failure |
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