| 双材料含桥联力Dugdale-Barenblatt模型的解析奇异单元 |
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| 引用本文： | 姚伟岸,胡小飞.双材料含桥联力Dugdale-Barenblatt模型的解析奇异单元[J].固体火箭技术,2011,34(5):635-638. |
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| 作者姓名： | 姚伟岸 胡小飞 |
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| 作者单位： | 大连理工大学工业装备结构分析国家重点实验室,大连,116024 |
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| 基金项目： | 国家自然科学基金(10772039); 973国家重点基础研究计划(2010CB832704); 国家高技术研究发展计划863(2009AA044501)资助项目 |
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| 摘 要： | 利用辛体系所提供的双材料楔形结合平面问题的解析辛本征展开通解与特解,构造出具有任意高阶精度的可用于双材料含桥联力Ⅰ型Dugdale-Barenblatt (D-B)模型界面裂纹分析的一类解析奇异单元.将奇异单元与常规单元相结合,就可有效地分析具有任意形状和荷载作用的含界面裂纹平面问题,并能方便地求解出界面D-B模型的塑...
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| 关 键 词： | 解析奇异元 辛对偶体系 Dugdale-Barenblatt模型 桥联力 CTOD |
An analytical singular element on bimaterial Dugdale-Barenblatt model with bridging tractions |
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| YAO Wei-an,HU Xiao-fei.An analytical singular element on bimaterial Dugdale-Barenblatt model with bridging tractions[J].Journal of Solid Rocket Technology,2011,34(5):635-638. |
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| Authors: | YAO Wei-an HU Xiao-fei |
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| Institution: | YAO Wei-an,HU Xiao-fei(State Key Laboratory of Structural Analysis for Industrial Equipment,Dalian University of Technology,Dalian 116024,China) |
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| Abstract: | Based on the symplectic eigen-solutions and a special solution of the sectorial wedge dissimilar materials,an analytical singular element with arbitrary order accuracy was presented,which can be applied to analyzing bimaterial mode I interface crack under Dugdale-Barenblatt(D-B) model with bridging tractions.Combined with conventional FEM,the singular element can be used to obtain length of plastic zone and crack tip opening displacement(CTOD) in the D-B model.Numerical results show that the method possesse... |
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| Keywords: | analytical singular element symplectic dual system Dugdale-Barenblatt model bridging traction CTOD |
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