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Publishing Language: Chinese

Multidisciplinary design optimization of BLISS-2000 based on OpenMDAO:research on process, strategy and parameters

Yuhao GAO1,2, Tengwu HE1,2, Min ZHAO1,2( )
School of Ocean and Civil Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Abstract

Objective

This paper aims to study the influence of the approximation model, consistency constraints, and boundary update strategy of the BLISS-2000 multidisciplinary design optimization method on its convergence performance and optimization efficiency based on OpenMDAO.

Method

First, the optimization process and boundary update strategy of BLISS-2000 are given. A BLISS-2000 model is then established based on OpenMDAO, and its accuracy is verified by mathematical and engineering examples. Finally, the effects of the approximation model's accuracy, consistency equality constraints, constraint relaxation, and boundary update strategy on the convergence performance and optimization efficiency of the model are studied.

Results

The results show that improving the accuracy of the approximation model and selecting the appropriate constraint relaxation factors and boundary update factors can greatly improve the convergence performance and optimization efficiency of the BLISS-2000 model. At the same time, the recommended values of the relevant parameters based on constraint relaxation are obtained.

Conclusion

The results of this study can provide useful references for the improvement of the BLISS-2000 method and its application in the conceptual design stage of ships and marine equipment.

Keywords

naval architecturemultiobjective optimizationmultidisciplinary design optimizationOpenMDAOBLISS-2000approximation modelboundary update strategy
CLC number: U662.2 Document code: A

References

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Chinese Journal of Ship Research
Volume 19 Issue 6,
December 2024
Pages 135-149
DOI: 10.19693/j.issn.1673-3185.04064

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Cite this article:
GAO Y, HE T, ZHAO M. Multidisciplinary design optimization of BLISS-2000 based on OpenMDAO:research on process, strategy and parameters. Chinese Journal of Ship Research, 2024, 19(6): 135-149. https://doi.org/10.19693/j.issn.1673-3185.04064

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Received: 15 July 2024
Revised: 22 August 2024
Published: 29 October 2024
© 2024 Chinese Journal of Ship Research.