OPTIMIZATION OF JACKET TYPE OFFSHORE-TOWER UNDER UNCERTAINTIES


Togan V., Karadeniz H., Daloglu A.

ASME International Mechanical Engineering Congress and Exposition, Florida, United States Of America, 13 - 19 November 2009, pp.239-245 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • Doi Number: 10.1115/imece2009-10584
  • City: Florida
  • Country: United States Of America
  • Page Numbers: pp.239-245

Abstract

In this work, economical design implementation of a jacket tower, which is subjected to some uncertainties associated with the loads, the material properties, and environmental data etc., is presented. In order to fulfill the defined task, reliability based design optimization (RBDO) concept combining the reliability analysis and optimization is performed with reliability constraints including stress, buckling, and the lowest natural frequency. The probabilistic constraints are evaluated by using Reliability Index Approach (RIA) and Performance Measure approach (PMA). The mass of the tower is considered as being the objective function; the thickness and diameter of the cross-section of the jacket members are taken as being design variables of the optimization.