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《上海交通大学学报(英文版)》 2009-04
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A Study on Dynamic Response of Cable-Seabed Interaction

WANG Fei1, HUANG Guo-liang2 , DENG De-heng2 , TU Xing-hua1 (1. Merchant Marine College, Shanghai Maritime University, Shanghai 200135, China; 2. State Key Laboratory of Ocean Engineering, Shanghai Jiaotong University, Shanghai 200030, China)  
A numerical method is developed to investigate the dynamic response of cable-seabed interaction in this paper. The motion of cable is described by the Lumped Parameter Method, while the seabed, unlike the prevailing simplified model of elastic foundation, is modeled as an irregular continuous rigid surface with rebound and friction existing, and the forces exerted by the seabed consist of normal counterforce and isotropic tangential Coulomb friction resistance. To describe the detailed dynamic response, two coeffcients are introduced by analogy with the theory of rigid body collision with friction. The cable-seabed kinematic and dynamic contact conditions are formulated subsequently, and are used to incorporate the seabed effect into the cable dynamics to produce a set of ordinary differential governing equations. In this paper, we employ 4th order Runge-Kutta method to solve these equations. Several simulation cases are presented to illustrate the seabed effect. The results show that friction and impact have a prominent influence on the statics and dynamics of the cable.
【Fund】: the Shanghai Excellent Young Teachers Program and the Shanghai Leading Academic Discipline Project (No. S30602)
【CateGory Index】: P754
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1 WANG Fei~(1,2*) HUANG Guo-liang~(1*) DENG De-heng~1 1.State Key Laboratory of Ocean Engineering,Shanghai Jiaotong University,Shanghai 200240,China; 2.Merchant Marine College,Shanghai Maritime University,Shanghai 200135,China;Steady State Analysis of Towed Marine Cables[J];上海交通大学学报(英文版);2008-02
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