Static Behavior of a Pipe String Designed for Mining Manganese Nodules

On the basis of linear beam theory, the static behavior of a pipe string designed for mining manganese nodules is formulated as a singularly perturbed boundary-value problem. This problem is analyzed by the method of matched asymptotic expansions and Galerkin's method. Static pipe deflections a...

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Bibliographic Details
Published inTransactions of the Japan Society of Mechanical Engineers Series A Vol. 54; no. 507; pp. 1943 - 1948
Main Authors ASO, Kazuo, TANI, Junji, YUAN, Shifeng
Format Journal Article
LanguageEnglish
Japanese
Published The Japan Society of Mechanical Engineers 1988
Subjects
Bending Moment
Boundary Layer
Deep Ocean Mining
Deflection
Galerkin's Method
Perturbation Method
Pipe String
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ISSN0387-5008
1884-8338
DOI10.1299/kikaia.54.1943

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Summary:On the basis of linear beam theory, the static behavior of a pipe string designed for mining manganese nodules is formulated as a singularly perturbed boundary-value problem. This problem is analyzed by the method of matched asymptotic expansions and Galerkin's method. Static pipe deflections and bending moments are evaluated for the practical range of towing speeds of the ship. The pipe deflections obtained by Galerkin's method agree well with those by the method of matched asymptotic expansions. However, it is found that Galerkin's method with the beam function is not effective in evaluating bending moments of the pipe string.
ISSN:0387-5008
1884-8338
DOI:10.1299/kikaia.54.1943