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| A Triangular prism variable Nodes Isoparameter Element; for Calculation of Stress Field in Welded Structure |
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| DOI：10.7511/jslx19941014 |
| KeyWord:triangular prism,variable nodes,shape function,stiffness matrix of element,welded structure |
| Guan Deqing:Yan Guoliang |
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| Abstract: |
| The shape functions and stiffness matrixes of the tfiangular prism isoparameter elements( 6 to 15 nodes )are developed in this paper from 3-D finite element theories,This nodes ofthe elements are variable and arbitrary.A calculating method for Gauss integral in triangularprism are presented.The stress concentration factors of plate welded joints have been calcu-lated by the triangular prism isoparameter elements and hexahedron isoparameter elements(8 to 21 nodes)in SAP5. It is shown that the stress field of welded structure can be calculat-ed by the two types of elements and the results have high accuracy from the calculation inthis paper. |
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