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| Accurate analysis method on the tangential stiffness matrix of pinned straight rod element |
| Received:August 13, 2012 Revised:December 01, 2012 |
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| DOI：10.7511/jslx201401009 |
| KeyWord:post-buckling analysis tangential stiffness matrix of pinned straight rod element K8 single-layer reticulated dome |
| Author | Institution |
| 刘树堂 |
广州大学 土木工程学院, 广州 |
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| Abstract: |
| In order to effectively complete post-buckling analysis of a large-scale single-layer reticulated dome,the exact formulation of the tangential stiffness matrix for the pinned straight rod element is achieved through derivation of the member end force vector with regard to the member displacement vector in this paper,which is suitable to any large nodal displacement of structure and avoid the limitation of small structure deformation.Star dome truss,planar circular arch truss and K8 single-layer reticulated dome are analyzed by combining the proposed pinned straight rod element tangential stiffness matrix with generalized displacement control method.The results have shown that the proposed pinned straight rod element tangential stiffness matrix has good capabilities for predicting large-scale single-layer reticulated dome post-buckling behavior. |