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《China Railway Science》 2002-04
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Research on the Modeling by Solid Element and Thin-shell Element

GAO Guang jun,TIAN Hong qi,YAO Song (Railway College District,Central South University, Changsha 410075,China)  
Solid element and thin shell element can′t be connected because of the discontinuousness of rotation DOF between them. This is a hard question in FEM calculation. In this paper the compound element is applied to solve the DOFs discontinuousness between solid element and thin shell element. The compound element can be seen as the combination of solid element and thin shell element, so it has six DOFs which are three displacement DOFs and three rotation DOFs. By the calculation of the solid FEM model and FEM model which connects solid element and thin shell element with the compound element, the result of this kind of model is almost equal to the solid model, the result is true and reliable.
【CateGory Index】: U270.2
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