Three-dimensional dynamic analysis method of multi-component mooring lines

Yuda Apri Hermawan, Yoshitaka Furukawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Complicated mooring system well-known as a multi-component mooring line is highly required owing to the deep depth of water and severe sea conditions. Since the dynamic behaviors of such mooring line are quite complex, proper numerical method is indispensable to predict the dynamic behaviors of a multi-component mooring line efficiently and precisely. In this paper, a numerical method improving the lumped mass method is proposed to introduce the three-dimensional dynamic analysis of multi-component mooring line with the motion of an anchor and clump weights. The mooring line is regarded as a multi-component object which has nonuniform segment line characteristics. In this method, lumped mass technique is developed to represent the three-dimensional dynamic behavior of each segment individually, allowing the motion of bottom-end segment as well as the anchor. Then, the motion of the end-segment is regarded as the motion of the upper-end of lower segment. Meanwhile, calculation method of initial condition for dynamic calculation is developed by adopting the basic principle of multi-component mooring line catenary equations. The results of time histories representing the three-dimensional dynamic analysis of mooring line are obtained and compared with other numerical and experimental results presented in published papers. The results show good agreement with both numerical and experimental results.

Original languageEnglish
Title of host publicationOffshore Technology; Offshore Geotechnics
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791858769
DOIs
Publication statusPublished - Jan 1 2019
EventASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2019 - Glasgow, United Kingdom
Duration: Jun 9 2019Jun 14 2019

Publication series

NameProceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
Volume1

Conference

ConferenceASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering, OMAE 2019
CountryUnited Kingdom
CityGlasgow
Period6/9/196/14/19

    Fingerprint

All Science Journal Classification (ASJC) codes

  • Ocean Engineering
  • Energy Engineering and Power Technology
  • Mechanical Engineering

Cite this

Hermawan, Y. A., & Furukawa, Y. (2019). Three-dimensional dynamic analysis method of multi-component mooring lines. In Offshore Technology; Offshore Geotechnics (Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE; Vol. 1). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/OMAE2019-96056