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research-article

A Finite Element Model for Prediction of the Bending Stress of Umbilicals

[+] Author and Article Information
Qingzhen Lu

School of Ocean Science and Technology, Dalian University of Technology, Panjin, 2 Dagong Road, China
luqingzhen@dlut.edu.cn

Zhixun Yang

Department of Engineering Mechanics, Dalian University of Technology, Dalian, 2 Linggong Road, China
yangzhixun@mail.dlut.edu.cn

Jun Yan

Department of Engineering Mechanics, Dalian University of Technology, Dalian, 2 Linggong Road, China
yanjun@dlut.edu.cn

Hailong Lu

Ocean Engineering Program, Federal University of Rio de Janeiro, Rio de Janeiro, Brazil
jlluhailong8976@gmail.com

Jinlong Chen

Department of Engineering Mechanics, Dalian University of Technology, Dalian, 2 Linggong Road, China
cjldut@163.com

Qianjin Yue

School of Ocean Science and Technology, Dalian University of Technology, Panjin, 2 Dagong Road, China
yueqj@dlut.edu.cn

1Corresponding author.

ASME doi:10.1115/1.4037065 History: Received January 14, 2017; Revised May 27, 2017

Abstract

Umbilical is an important equipment in the subsea production to supply a connection between the floater and the subsea well. Analyzing strength and fatigue behaviors under bending is a key requirement to assure safety. An analytical model is proposed for predicting the bending behavior of a steel tube wounded helically around a frictionless cylinder. A full three-dimensional finite element (FE) model of an umbilical is developed by considering the frictions and contacts among its components. The numerical results of the bending stress of a steel tube were validated against that of the analytical model. The impacts of friction coefficients on the bending stress, contact pressure and friction stress have been further investigated by the established FE model.

Copyright (c) 2017 by ASME
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