Experimental study of axial load of coiled tubing in a steel catenary riser under force excitation. (3rd July 2021)

• Record Type: Journal Article
• Authors: Wang, Wenming; Xiong, Minghao; Hao, Yi; Chen, Yingchun; Zhu, Xiaoxiao; Wang, Chunmeng
• Is Part Of: Ships and offshore structures. Volume 16:Number 6(2021)
• Page Start: 586
• Page End: 594
• Publication Date: 2021-07-03
• Subjects: Experimental analysis -- axial load -- coiled tubing -- steel catenary riser -- transfer efficiency -- force excitation; Ships -- Periodicals; Offshore structures -- Periodicals; Marine engineering -- Periodicals; Marine engineering -- Technological innovations -- Periodicals; Ocean engineering -- Periodicals; Ocean engineering -- Technological innovations -- Periodicals; 623.8
• DOI: 10.1080/17445302.2020.1751479
• Languages: English
• ISSNs: 1744-5302

Abstract

ABSTRACT: The transfer characteristic of the CT's axial load is necessarily investigated for its safety operation. In this study, a mechanical model of the coupled tube systems is described using micro element method. To analyse the effects of ocean loads, an experimental downsized platform is built. A physical vibration exciter is used to simulate the SCR's lateral vibration, and then the axial load and its transfer efficiency of the CT are obtained under the excitation frequencies of 3, 6, 9 Hz and excitation forces of 30, 50, 70 N. Experimental results show that the excitation forces and excitation frequencies within certain ranges would promote the transmission of the axial force of the inner pipe. The force-outs under excitation frequencies and excitation forces are greater than that under no force excitation, and the transfer efficiencies of axial force will increase with the growth of the excitation forces and excitation frequencies.