Automatic Filling Optimization Design of Filler Bodies in Umbilical Cross-Section Based on Quasi-Physical Algorithm

doi:10.16183/j.cnki.jsjtu.2023.588

Abstract

Abstract:

As a key component in the subsea production system for oil and gas exploitation, a marine umbilical consists of optical cables, electrical cables, steel tubes, and filler bodies. The difference of materials and dimensions between the components leads to a great difference in their mechanical properties, and the different layouts cause a large gap in the performance of an umbilical. Considering the compactness, balance, and heat source dispersion of the cross-section, a multi-objective optimization model is established in this paper. Based on the quasi-physical algorithm, the layout design of cross-section of an umbilical containing equal-diameter components is conducted. Due to the mutual constraints between functional components, the optimized cross-section will have large gap. In order to meet the requirement of dense cross-sectional layout in the umbilical cable design specification, a strategy for automatically filling filler bodies based on image recognition is introduced, in combination with the layout optimization process. Finally, taking an umbilical as an example, the filling strategy is utilized to complete the design of cross-sectional filler bodies after obtaining the optimal layout through the quasi-physical algorithm. The algorithm is validated by comparison with the initial cross-sectional layout, demonstrating its effectiveness as a reference for the design of cross-sectional filler bodies of umbilicals.

Key words: umbilical, cross-sectional layout, quasi-physical algorithm, filling strategy, optimization design

CLC Number:

TE832

YIN Xu, CAO Donghui, TIAN Geng, YANG Zhixun, FAN Zhirui, WANG Gang, LU Yucheng, WANG Hui. Automatic Filling Optimization Design of Filler Bodies in Umbilical Cross-Section Based on Quasi-Physical Algorithm[J]. Journal of Shanghai Jiao Tong University, 2025, 59(8): 1103-1113.

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功能构件类型	直径,D/mm	虚拟重力,G/MN
钢管构件	40	13.2
电缆构件	40	2.6
光缆构件	40	9.1

布局形式	截面半径/mm	Δ/mm	T/mm^-2
布局1	77	0.075 2	0.151 8
布局2	77	0.032 7	0.151 8

布局形式	平均径向变形/mm	偏差/%	最大径向变形差值/mm	偏差/%
布局1	7.842	—	14.670	—
布局2	0.118	-98.50	0.083	-99.43