|
| Substructure methods in geometric nonlinear analysis of slender structures |
| Received:May 21, 2012 Revised:January 23, 2013 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7511/jslx201306002 |
| KeyWord:structural mechanics geometric nonlinearity substructures large rotation |
| Author | Institution |
| 齐朝晖 |
大连理工大学 工程力学系 工业装备结构分析国家重点实验室, 大连 |
| 孔宪超 |
大连理工大学 工程力学系 工业装备结构分析国家重点实验室, 大连 |
| 方慧青 |
大连理工大学 工程力学系 工业装备结构分析国家重点实验室, 大连 |
|
| Hits: 6238 |
| Download times: 2717 |
| Abstract: |
| Along the longitudinal direction,a slender structure can be divided into several substructures on which an embedded coordinate frame is defined,there by total nodal displacements can be decomposed into the rotation of the frame and the small relative displacements with respect to the frame.Taking advantage of such deformation characteristics,we give the expressions of frame rotations and nodal displacements as well as their virtual variations,which are compatible with the definition of the embedded coordinate frames.Consequently,we presented a new substructure method for geometrically nonlinear analysis of slender structures,in which displacements of each substructure are reduced to the displacements of its boundary nodes.Compared to traditional methods of geometrically nonlinear analysis,the present method can greatly reduce the solution scale in case of not losing precision.Finally,an example shows the effectiveness of the method. |
|
|
|