Marine Riser Vibration Response Determined by Modal Analysis

[+] Author and Article Information
D. W. Dareing

Maurer Engineering Inc., Houston, Tex. 77092

T. Huang

University of Texas at Arlington, Arlington, Tex. 76019

J. Energy Resour. Technol 101(3), 159-166 (Sep 01, 1979) (8 pages) doi:10.1115/1.3446914 History: Received July 13, 1978; Revised May 29, 1979; Online August 19, 2010


Marine riser response calculations are usually based on finite element or finite difference methods. This paper outlines the modal analysis method as an alternate approach for calculating marine riser time-dependent stresses. An example problem shows that five natural vibration modes give acceptable convergence and engineering accuracy. Dynamic response calculations are, therefore, greatly simplified as only a limited number of eigenvalues and eigenfunctions are needed. In addition, the time-dependent part of the solution can be determined from elementary single-degree-of-freedom-type equations.

Copyright © 1979 by ASME
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