publication . Article . 2016

An accurate and computationally efficient small-scale nonlinear FEA of flexible risers

Rahmati, MT; Bahai, H; Alfano, G;
Open Access English
  • Published: 15 Jul 2016
  • Publisher: Elsevier
  • Country: United Kingdom
Abstract
This paper presents a highly efficient small-scale, detailed finite-element modelling method for flexible risers which can be effectively implemented in a fully-nested (FE2) multiscale analysis based on computational homogenisation. By exploiting cyclic symmetry and applying periodic boundary conditions, only a small fraction of a flexible pipe is used for a detailed nonlinear finite-element analysis at the small scale. In this model, using three-dimensional elements, all layer components are individually modelled and a surface-to-surface frictional contact model is used to simulate their interaction. The approach is applied on a 5-layered pipe made of inner, ou...
Subjects
free text keywords: Flexible risers, Frictional contact, Periodic boundary condition, FE modelling, H100, Environmental Engineering, Ocean Engineering, Nonlinear fea, CPU time, Armour, Homogenization (chemistry), Pitch length, Structural engineering, business.industry, business, Engineering, Nonlinear system, Periodic boundary conditions, Cyclic symmetry
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