The flexible cryogenic hose has been a favored alternative for offshore liquefied natural gas (LNG) exploitation recently, of which helical corrugated steel pipe is the crucial component with C shaped corrugation. Parametric finite-element models of LNG cryogenic helical corrugated pipe are presented based on 3D shell element in this paper. Taking account of nonlinearity such as cryogenic material and large geometric structural deformation, mechanical behavior characteristics results are obtained under axial tensional, bending and inner pressure loads. Meanwhile, the design parameters are determined for the shape optimization of structures of the flexible cryogenic hose through sectional dimension analysis, and sensitivity analysis is performed with changing geometric parameters. A multi-objective optimization with the object of minimizing stiffness and strength stress is formulated based on operation condition. Full factorial experiment and radial basis function (RBF) neural network are applied to establish the approximated model for the analysis of the structure. The Pareto optimal solution set and value range of parameters are obtained through NSGA-II GA algorithm under manufacturing and stiffness constraints. It provides a feasible optimal approach for the structural design of LNG cryogenic corrugated hose.
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ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering
June 19–24, 2016
Busan, South Korea
Conference Sponsors:
- Ocean, Offshore and Arctic Engineering Division
ISBN:
978-0-7918-4996-5
PROCEEDINGS PAPER
Multi-Objective Shape Optimization Design for LNG Cryogenic Helical Corrugated Steel Pipe
Zhixun Yang,
Zhixun Yang
Dalian University of Technology, Dalian, China
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Jun Yan,
Jun Yan
Dalian University of Technology, Dalian, China
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Qingzhen Lu,
Qingzhen Lu
Dalian University of Technology, Dalian, China
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Jinlong Chen,
Jinlong Chen
Dalian University of Technology, Dalian, China
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Shanghua Wu,
Shanghua Wu
Dalian University of Technology, Dalian, China
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Lidong Wang,
Lidong Wang
Dalian University of Technology, Dalian, China
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Qianjin Yue
Qianjin Yue
Dalian University of Technology, Dalian, China
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Zhixun Yang
Dalian University of Technology, Dalian, China
Jun Yan
Dalian University of Technology, Dalian, China
Qingzhen Lu
Dalian University of Technology, Dalian, China
Jinlong Chen
Dalian University of Technology, Dalian, China
Shanghua Wu
Dalian University of Technology, Dalian, China
Lidong Wang
Dalian University of Technology, Dalian, China
Qianjin Yue
Dalian University of Technology, Dalian, China
Paper No:
OMAE2016-55151, V005T04A022; 12 pages
Published Online:
October 18, 2016
Citation
Yang, Z, Yan, J, Lu, Q, Chen, J, Wu, S, Wang, L, & Yue, Q. "Multi-Objective Shape Optimization Design for LNG Cryogenic Helical Corrugated Steel Pipe." Proceedings of the ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. Volume 5: Pipelines, Risers, and Subsea Systems. Busan, South Korea. June 19–24, 2016. V005T04A022. ASME. https://doi.org/10.1115/OMAE2016-55151
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