| 基于扩展有限元方法的界面接触算法 |
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| 引用本文： | 喻葭临,于玉贞,张丙印,吕禾. 基于扩展有限元方法的界面接触算法[J]. 工程力学, 2011, 0(4): 13-17 |
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| 作者姓名： | 喻葭临 于玉贞 张丙印 吕禾 |
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| 作者单位： | 清华大学水沙科学与水利水电工程国家重点实验室; |
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| 基金项目： | 国家自然科学基金项目(50779024,50879039,50639060) |
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| 摘 要： | 该文构建了适用于扩展有限元法(XFEM)的界面接触算法,该算法具备模拟界面上粘连、滑动和分离状态的能力.对平面摩擦问题的计算结果表明,该方法对于界面接触行为的描述能力与常规接触面单元十分接近.对平面应变压剪试样中剪切带问题的模拟分析表明,该算法合理地反映了摩擦接触的耗散机制,从而避免了零能耗散现象,能够较准确地描述平面...
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| 关 键 词： | 接触算法 扩展有限元法 粘聚裂纹模型 Willner连续摩擦定律 剪切带 |
A CONTACT ALGORITHM BASED ON EXTENDED FINITE ELEMENT METHOD |
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| YU Jia-lin,YU Yu-zhen,ZHANG Bing-yin,LU He. A CONTACT ALGORITHM BASED ON EXTENDED FINITE ELEMENT METHOD[J]. Engineering Mechanics, 2011, 0(4): 13-17 |
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| Authors: | YU Jia-lin YU Yu-zhen ZHANG Bing-yin LU He |
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| Affiliation: | YU Jia-lin,YU Yu-zhen,ZHANG Bing-yin,LU He(State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China) |
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| Abstract: | A contact algorithm based on an extended finite element method(XFEM) is established,which is able to simulate the adhesion,slide and separation of a contact interface.The results of an example for a plane frictional problem demonstrate that the performance on describing the contact behavior of this algorithm is almost identical to that of a conventional interface element.The results of an example on the shear band in a plane strain sample demonstrate that this algorithm can reflect the dissipation mechanism... |
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| Keywords: | contact algorithm extended finite element method cohesive crack model Willner's continuous friction law shear band |
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