Dynamic Optimization of Steel Catenary Risers Based on Reliability Using Metamodel

Zheng, W. and Yang, H. (2010) Dynamic Optimization of Steel Catenary Risers Based on Reliability Using Metamodel. In: 29th International Conference on Ocean, Offshore and Arctic Engineering, Shanghai, China, 6-11 June 2010, pp. 223-228. ISBN 9780791849132 (doi:10.1115/OMAE2010-20158)

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Reliability based design optimization (RBDO) of a steel catenary riser (SCR) using metamodel is investigated. The purpose of the optimization is to find the minimum-cost design subjecting to probabilistic constraints. To reduce the computational cost of the traditional double-loop RBDO, a single-loop RBDO approach is employed. The performance function is approximated by using metamodel to avoid time consuming finite element analysis during the dynamic optimization. The metamodel is constructed though design of experiments (DOE) sampling. In addition, the reliability assessment is carried out by Monte Carlo simulations. The result shows that the RBDO of SCR is a more rational optimization approach compared with traditional deterministic optimization, and using metamodel technique during the dynamic optimization process can significantly decrease the computational expense without sacrificing accuracy.

Item Type:Conference Proceedings
Additional Information:
ASME 2010. Paper No. OMAE2010-20158, pp. 223-228.
eISBN: 9780791838730.
Glasgow Author(s) Enlighten ID:Yang, Dr Hezhen
Authors: Zheng, W., and Yang, H.
College/School:College of Science and Engineering > School of Engineering > Infrastructure and Environment

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