Stress Analysis of Top Tensioned Riser Under Random Waves and Vessel Motions  

作　　者：LI Xiaomin GUO Haiyan MENG Fanshun 

机构地区：[1]College of Engineering, Ocean University of China, Qingdao 266100, P. R. China [2]College of Marine Geo-science, Ocean University of China, Qingdao 266100, P. R. China

出　　处：《Journal of Ocean University of China》2010年第3期251-256,共6页中国海洋大学学报（英文版）

基　　金：supported by the High Technology Research and Development Program of China (863 Program, Grant Nos SQ2009AA09Z3487852 and 2007AA09Z313)

摘　　要：The bending stresses of top tensioned riser(TTR) under combined excitations of currents,random waves and vessel motions are presented in this paper,and the effect of the internal flowing fluid on the riser stresses is also considered.The computation programs which are used to solve the differential equations in the time domain are compiled and the principal factors of concern including the angular movements at the upper and lower ends of the riser,lateral displacements and bending stresses are presented.Then the effects of current velocity,random wave,top tension,vessel mean offset,low frequency motion and internal flow velocity on the bending stresses of the riser are analyzed in detail.The bending stresses of top tensioned riser （TTR） under combined excitations of currents, random waves and vessel motions are presented in this paper, and the effect of the internal flowing fluid on the riser stresses is also considered. The computation programs which are used to solve the differential equations in the time domain are compiled and the principal factors of concern including the angular movements at the upper and lower ends of the riser, lateral displacements and bending stresses are presented. Then the effects of current velocity, random wave, top tension, vessel mean offset, low frequency motion and internal flow velocity on the bending stresses of the riser are analyzed in detail.

关 键 词：top tensioned riser （TTR） internal flow vessel motion dynamic response 

分 类 号：TH49[机械工程—机械制造及自动化] P731.22[天文地球—海洋科学]