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contributor authorYang, Zhixun
contributor authorYan, Jun
contributor authorChen, Jinlong
contributor authorLu, Qingzhen
contributor authorYue, Qianjin
date accessioned2017-11-25T07:18:55Z
date available2017-11-25T07:18:55Z
date copyright2017/25/5
date issued2017
identifier issn0892-7219
identifier otheromae_139_05_051703.pdf
identifier urihttp://138.201.223.254:8080/yetl1/handle/yetl/4235491
description abstractRecently, the flexible cryogenic hose has been preferred as an alternative to exploit offshore liquefied natural gas (LNG), in which helical corrugated steel pipe is the crucial component with C-shaped corrugation. Parametric finite element models of the LNG cryogenic helical corrugated pipe are established using a three-dimensional shell element in this paper. Considering the nonlinearity of cryogenic material and large geometric structural deformation, mechanical behaviors are simulated under axial tension, bending, and internal pressure loads. In addition, design parameters are determined to optimize the shape of flexible cryogenic hose structures through sectional dimension analysis, and sensitivity analysis is performed with changing geometric parameters. A multi-objective optimization to minimize stiffness and stress is formulated under operation conditions. Full factorial experiment and radial basis function (RBF) neural network are applied to establish the approximated model for structure analysis. The set of Pareto optimal solutions and value range of parameters are obtained through nondominated sorting genetic algorithm II (NSGA-II) under manufacturing and stiffness constraints, thereby providing a feasible optimal approach for the structural design of LNG cryogenic corrugated hose.
publisherThe American Society of Mechanical Engineers (ASME)
titleMulti-Objective Shape Optimization Design for Liquefied Natural Gas Cryogenic Helical Corrugated Steel Pipe
typeJournal Paper
journal volume139
journal issue5
journal titleJournal of Offshore Mechanics and Arctic Engineering
identifier doi10.1115/1.4036372
journal fristpage51703
journal lastpage051703-11
treeJournal of Offshore Mechanics and Arctic Engineering:;2017:;volume( 139 ):;issue: 005
contenttypeFulltext


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