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Unilateral contact stresses at steel pipe saddles
AbstractThe topic addressed in the present paper is the computation of the local contact loads acting on a pipe vessel that rests freely on a saddle. The boundary nonlinearity, introduced by the complicated nature of the unilateral contact boundary condition at the saddle, leads to the formulation of a linear complementarity problem (LCP) that governs the behaviour of the discretized pipe shell. This LCP is a direct extension of the force method of structural analysis where the local contact loads are acting as redundants. The flexibility coefficients are obtained through a Fourier series representation. Two algorithms for the solution of the LCP are described. Results for a two-span pipe with an intermediate saddle are given and discussed.
Unilateral contact stresses at steel pipe saddles
AbstractThe topic addressed in the present paper is the computation of the local contact loads acting on a pipe vessel that rests freely on a saddle. The boundary nonlinearity, introduced by the complicated nature of the unilateral contact boundary condition at the saddle, leads to the formulation of a linear complementarity problem (LCP) that governs the behaviour of the discretized pipe shell. This LCP is a direct extension of the force method of structural analysis where the local contact loads are acting as redundants. The flexibility coefficients are obtained through a Fourier series representation. Two algorithms for the solution of the LCP are described. Results for a two-span pipe with an intermediate saddle are given and discussed.
Unilateral contact stresses at steel pipe saddles
Thomopoulos, Kimon (author) / Bisbos, Christos D. (author)
Thin-Walled Structures ; 15 ; 305-319
1992-08-26
15 pages
Article (Journal)
Electronic Resource
English
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