| Postbuckling Analysis for Offshore Pipelines with Residual Stresses |
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| 摘 要： | Based on the finite displacement theory of elastic shells, the postbuckling behaviour of submarine pipelines with residual stresses is investigated by using a new finite element formula. The corresponding complementary energy functional is first constructed, and then a geometrical stiffness matrix suitable for the postbuckling of a cylindrical shell is derived. In this matrix the effects of initial stresses and harmonic coupling terms have been considered. The formulation presented in this paper can be used to solve a significant class of problems in the analysis of elastic shells.
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Postbuckling Analysis for Offshore Pipelines with Residual Stresses |
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| Huang Yuying,Qin Qinghua Zhu Dashan Professor. Postbuckling Analysis for Offshore Pipelines with Residual Stresses[J]. China Ocean Engineering, 1991, 0(2) |
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| Authors: | Huang Yuying Qin Qinghua Zhu Dashan Professor |
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| Abstract: | Based on the finite displacement theory of elastic shells, the postbuckling behaviour of submarine pipelines with residual stresses is investigated by using a new finite element formula. The corresponding complementary energy functional is first constructed, and then a geometrical stiffness matrix suitable for the postbuckling of a cylindrical shell is derived. In this matrix the effects of initial stresses and harmonic coupling terms have been considered. The formulation presented in this paper can be used to solve a significant class of problems in the analysis of elastic shells. |
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| Keywords: | postbuckling offshore pipeline residual stress variational principle finite deflection |
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