| 任意孔与裂纹群相互干涉效应的分析法 |
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| 引用本文： | 杨振国,王允昌. 任意孔与裂纹群相互干涉效应的分析法[J]. 华东理工大学学报(自然科学版), 1989, 0(4) |
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| 作者姓名： | 杨振国 王允昌 |
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| 作者单位： | 华东化工学院化工机械研究所(杨振国)，华东化工学院化工机械研究所(王允昌) |
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| 摘 要： | 提出了文题的改进型体积力法,修改了体积力密度的定义;引入了建立在各单元中心处的局部坐标;获得了以封闭形表述的所有应力影响系数计算式,提高了计算效率和精度,应用也更为方便与有效。文中给出的算例表明了改进型体积力法具有精度高、收敛快的优点。
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| 关 键 词： | 应力强度因子 改进型体积力法 边界积分方程 孔群 裂纹群 干涉效应 应力集中系数 |
A Proposed Approach for Analyzing Interference Effects of Multiple Arbitrary Holes and Cracks Subjected to Complex Loading |
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| Yang Zhenguo Wang Yunchang. A Proposed Approach for Analyzing Interference Effects of Multiple Arbitrary Holes and Cracks Subjected to Complex Loading[J]. Journal of East China University of Science and Technology, 1989, 0(4) |
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| Authors: | Yang Zhenguo Wang Yunchang |
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| Affiliation: | Research Institute of Process Equipment and Pressure Vessels |
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| Abstract: | This paper proposes a modified body force method for analyzing interference effects of multiple arbitrary holes and cracks under complex loading. In comparison with the original body force method, the definition of body force density is modified; local coordinates with respect to the center of each element are introduced and all the stress influence coefficients are obtained in closed form, Thus not ohly the computation efficiency and precision are improved, but also the application of the body force method is made more convenient and effective,The examples giveh in the paper show that the modified body force method proves excellent in higher precision and faster convergence when the interference effects of multiple arbitrary holes and cracks under complex loading are analyzed. |
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| Keywords: | stress intensity factor modified body force method boundary integral equation multiple holes multiple cracks interference effects stress concentration factor |
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