Modelling Seabed Ploughing Using the Material Point Method

Michael Cortis (Lead / Corresponding author), William M. Coombs, Charles E. Augarde, Scott Robinson, Michael Brown, Andrew Brennan

Research output: Contribution to journalArticle

2 Citations (Scopus)
178 Downloads (Pure)

Abstract

Ploughing of the seabed is needed for the installation of cables and pipelines and is an area of construction likely to increase given plans in the UK and elsewhere for offshore marine energy (wind and tidal). Seabed ploughing is an expensive and sometimes risky operation for which there are limited guidelines as to what the tow force and speed is for an expected trenching profile within a specified ground condition. Most ploughing schemes are designed using semi-empirical approaches, with very few computational tools able to take into account the geometric and material nonlinearity inherited by the ploughing problem. In this paper we describe how the Material Point Method (MPM) is being used as a numerical tool to model seabed ploughing with the aim of providing an improved predictive tool for the future, via an EPSRC-funded research project at Durham and Dundee Universities. Various issues are discussed in the paper including the means of modelling moving essential boundaries and the choice of basis functions, and this new method in MPM is demonstrated on a simple ploughing problem.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalProcedia Engineering
Volume175
Early online date27 Feb 2017
DOIs
Publication statusPublished - 2017

    Fingerprint

Keywords

  • Essential boundary conditions
  • Material point method
  • Offshore geotechnics
  • Ploughing

Cite this