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| Mixed model for partitioned interface stress element method-finite element method-infinite element method |
| Revised:March 24, 2003 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx20051003 |
| KeyWord:rigid-spring element,interface stress element method,infinite element method,mixed model,discontinuous media mechanics |
| ZHANG Qing~* ZHOU Zi-bin ZHUO Jia-shou |
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| Abstract: |
| Based on the model of rigid-spring element suitable for homogeneous elastic problem, which was developed by Japanese professor Kawai,The interface stress element model(ISEM) for solving the problem of discontinuous media mechanics has been established. Compared with the traditional finite element method (FEM), The ISEM is more accurate and applicable. But on the other hand, the total number of freedom degree of ISEM in dealing with three-dimensional problems is higher than that of FEM, which often bring about the negative effects on efficiency of calculation and the handling of infinite body or semi-infinite body. Therefore, it is necessary to establish a mixed model by gathering the advantages of ISEM, FEM and IEM(infinite element method) together. By making use of the good compatibility of ISEM and introducing the concept of transitional interface element, this paper combines the counting methods of ISEM and FEM, and proposes a mixed model of ISEM-FEM-IEM which can solve, to a large extent, the contradictions between accuracy and efficiency of calculation. The examples prove the applicability and adaptability of this model to engineering. |
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