| 裂纹面荷载作用下多裂纹应力强度因子计算 |
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| 引用本文： | 刘钧玉,林皋,胡志强.裂纹面荷载作用下多裂纹应力强度因子计算[J].工程力学,2011(4):7-12. |
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| 作者姓名： | 刘钧玉 林皋 胡志强 |
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| 作者单位： | 沈阳工业大学建筑工程学院;大连理工大学土木水利学院; |
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| 基金项目： | 辽宁省教育厅基金项目(L2010413,2009A551); 国家自然科学青年基金项目(50709013); 沈阳工业大学博士启动基金项目(521101302) |
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| 摘 要： | 该文基于比例边界有限元法计算了裂纹面荷载作用下平面多裂纹应力强度因子.比例边界有限元法可以给出裂纹尖端位移场和应力场的解析表达式,该特点可以使应力强度因子根据定义直接计算,同时不需要对裂纹尖端进行特殊处理.联合子结构技术可以计算多裂纹问题的应力强度因子.数值算例表明该文方法是有效且高精确的,进而推广了比例边界有限元法的...
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| 关 键 词： | 应力强度因子 比例边界有限元法 多裂纹问题 各向异性材料 裂纹面荷载 |
THE CALCULATION OF STRESS INTENSITY FACTORS OF MULTIPLE CRACKS UNDER SURFACE TRACTIONS |
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| LIU Jun-yu,LIN Gao,HU Zhi-qiang.THE CALCULATION OF STRESS INTENSITY FACTORS OF MULTIPLE CRACKS UNDER SURFACE TRACTIONS[J].Engineering Mechanics,2011(4):7-12. |
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| Authors: | LIU Jun-yu LIN Gao HU Zhi-qiang |
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| Affiliation: | LIU Jun-yu1,LIN Gao2,HU Zhi-qiang2(1.School of Architecture & Civil Engineering,Shenyang University of Technology,Shenyang,Liaoning 110870,China,2.School of Civil and Hydraulic Engineering,Dalian University of Technology,Dalian,Liaoning 116024,China) |
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| Abstract: | The stress intensity factors of multiple cracks are calculated by using the scaled boundary finite element method(SBFEM) considering the surface tractions.SBFEM has the advantages that it gives analytical solutions of displacements and stress fields in the radial direction and thus the stress intensity factors can be evaluated according to its definition without a particular treatment of crack tip.For the multiple crack problems,the present method can calculate the SIF by introducing the sub-structuring tec... |
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| Keywords: | stress intensity factor scaled boundary finite element method multiple crack problems orthotropic material surface tractions |
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