Dynamic simulation and tension compensation research on subsea umbilical cable laying system

Guojun Bi , Shaohua Zhu , Jun Liu , Xiaoming Fang , Liquan Wang , Guojun Bi , Shaohua Zhu , Jun Liu , Xiaoming Fang , Liquan Wang

Journal of Marine Science and Application ›› 2013, Vol. 12 ›› Issue (4) : 452 -458.

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Journal of Marine Science and Application ›› 2013, Vol. 12 ›› Issue (4) : 452 -458. DOI: 10.1007/s11804-013-1216-8
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Dynamic simulation and tension compensation research on subsea umbilical cable laying system

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Abstract

For studying the dynamic performance of subsea umbilical cable laying system and achieving the goal of cable tension and laying speed control, the rigid finite element method is used to discrete and transform the system into a rigid-flexible coupling multi-body system which consists of rigid elements and spring-damping elements. The mathematical model of subsea umbilical cable laying system kinematic chain is presented with the second order Lagrange equation in the joint coordinate system, and dynamic modeling and simulation is performed with ADAMS. The dynamic analysis is conducted assuming the following three statuses: ideal laying, practical laying under wave disturbance, and practical laying with tension compensation. Results show that motion disturbances of the laying budge under sea waves, especially with heaving and pitching, will cause relatively serious fluctuations in cable tension and laying speed. Tension compensation, i.e., active back tension torque control can restrict continuous tension increasing or decreasing effectively and rapidly, thus avoiding cable breach or buckling.

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subsea umbilical cable laying system / rigid finite element method / Lagrange equation / dynamic simulation / tension compensation

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Guojun Bi,Shaohua Zhu,Jun Liu,Xiaoming Fang,Liquan Wang,Guojun Bi,Shaohua Zhu,Jun Liu,Xiaoming Fang,Liquan Wang. Dynamic simulation and tension compensation research on subsea umbilical cable laying system. Journal of Marine Science and Application, 2013, 12(4): 452-458 DOI:10.1007/s11804-013-1216-8

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