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RESEARCH PAPERS

Quickwave: An Impulse Algorithm to Calculate Preliminary Design Shear and Moment Envelopes for Compliant Towers

[+] Author and Article Information
D. G. Morrison

Ocean Research and Development, Shell Development Company, P.O. Box 481, Houston, TX 77001

J. Offshore Mech. Arct. Eng 117(2), 85-90 (May 01, 1995) (6 pages) doi:10.1115/1.2827068 History: Received January 01, 1993; Revised November 07, 1994; Online December 17, 2007

Abstract

A novel, simple method to calculate compliant tower (CT) level shear and moment envelopes for preliminary design has been developed, and verified by comparing with rigorous 3-D tower analyses. The approach relies on a vast experience base to define important features influencing the dynamic response of CTs, and a new closed-form solution for the acceleration (needed to construct design envelopes) of the tower caused by an impulsive-type wave load. The main benefits of the approach are: 1) the designer can iterate and quickly converge on a working preliminary design without resorting to time-consuming computer analyses; 2) the designer can quickly evaluate configurations for different water depths, pile arrangements, payload, steel grade, reserve buoyancy, and well counts.

Copyright © 1995 by The American Society of Mechanical Engineers
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