| 不同介质界面应力的二维及三维有限元分析 |
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| 引用本文： | 漆文邦.不同介质界面应力的二维及三维有限元分析[J].四川大学学报(工程科学版),1998(3). |
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| 作者姓名： | 漆文邦 |
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| 作者单位： | 四川联合大学水利工程系!成都，610065 |
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| 摘 要： | 本文所提出的方法相当于在一般有限元基础上先用一般方法获取位移，利用拉格郎日乘数来强加交界面上的相容条件和平衡条件，然后在最小二乘法意义下在局部区域上建立泛函重新定义。计算结果表明，应力计算精度从根本上得到了改进。
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| 关 键 词： | 不同介质 界面应力 有限元 |
Enhancing Predictions of Finite Element for 2-D and 3-D Situations Along the Interface Stresses of Different Elastic Materials |
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| Qi Wenbang.Enhancing Predictions of Finite Element for 2-D and 3-D Situations Along the Interface Stresses of Different Elastic Materials[J].Journal of Sichuan University (Engineering Science Edition),1998(3). |
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| Authors: | Qi Wenbang |
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| Abstract: | The proposed algorithm consists of solving an elasticity problem by finite element method with a modified set of shape functionS. displacements are obtained conventionally and then redefined over limited rations of the field using a least squares functional minimization approach. Compatibility and equilibrium conditions are imposed at the interface, using Lagrange multipliers. The efficiency of the process is demonstrated by several test cases. |
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| Keywords: | different elastic materials interface stress finite element |
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