5-7 December 2018 - Hong Kong, China

CONFERENCE PAPERS

Ninth International Conference on Advances in Steel Structures (ICASS 2018)


FINITE ELEMENT MODELLING AND TEST OF A NOVEL COUPLING ARM CONNECTING TWO FLOATING BODIES

 

Tao Li 1,2*, Xudong Qian 1,2, Hongyou Cao 1,2, Aziz Merchant 1,3, Ains Hussain 1,4, Amit Jain 1,3, Bernad A.P Francis 1,5, Ankit Choudhary 1,3

1 Keppel-NUS Corporate Laboratory, Singapore

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2 Department of Civil and Environmental Engineering, National University of Singapore, Singapore

3 Keppel Technology & Innovation, Singapore

4 Keppel Marine Technology Development, Singapore

5 Keppel Deepwater Technology Group, Singapore

DOI:10.18057/ICASS2018.P.119

ABSTRACT:

This study reports the prototype of a novel coupling arm and its finite element (FE) modelling. The coupling arm is designed for connecting a tender assisted drilling (TAD) rig and a tension leg platform (TLP) in a harsh deepwater environment, replacing the nylon hawser ropes used traditionally. It consists of three rigid tubes, a pneumatic piston and four flexible joints connecting the three tubes and the piston. The pneumatic piston is applied with pretension load by pumping compressed gas media, and it is designed to absorb all the relative surge motion between the TAD and TLP by the piston bar stroking. The flexible joints are used for resisting the bending loads due to the relative heave, sway, pitch, and yaw motion of the TAD with respect to the TLP. In this study, a very efficient technique is proposed to simulate the flexible joints and the pneumatic piston. In order to validate the proposed FE model, two scaled coupling arms were fabricated and tested under heave action. The FE model is proven to be reliable and accurate after verifying against experimental results.

Keywords:

Coupling arm; Heave test; Finite element modelling

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IMPORTANT DATES

First call for paper:
1 January 2018
Abstract submission: (CLOSED)
1 April 2018
Notification of abstract acceptance:
on or before 16 April 2018 
Full paper submission: 
15 July 2018
Online Registration Begins:
1 August 2018
Notification of full paper acceptance:
31 August 2018
Early bird registration:
on or before 7 September 2018
Online Registration Closes:
31 October 2018
Announcement of programme:
1 November 2018
ICASS2018 December 05, 2018 08:00 AM