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

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

精确且计算高效的柔性立管小规模非线性有限元分析

DOI:
10.1016/j.oceaneng.2016.05.055
复制
发表时间:
2016
期刊:
影响因子:
5
通讯作者:
Rahmati M
Rahmati M
中科院分区:
工程技术2区
文献类型:
--
作者:
Rahmati M

文献摘要

参考文献

被引文献

相似文献

本文提出了一种高效、小规模、详细的柔性立管有限元模拟方法,该方法可以有效地在基于计算均匀化的全嵌套(FE2)多尺度分析中实现。通过利用循环对称性和周期性边界条件,只使用一小部分柔性管进行小尺度的详细非线性有限元分析。在该模型中,使用三维单元,对所有层组件进行单独建模,并使用面面摩擦接触模型来模拟它们之间的相互作用。该方法应用于由内、外、中间聚合物层和两个中间铠装层组成的五层管道,每层由40根钢筋组成。通过对L p和L p/5、L p/20和L p/40等不同长度的管元的计算结果的比较,证明了该方法能够捕捉到详细的非线性效应,并且在节省计算机时间方面具有很大的优势。
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 (FE 2) 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, outer and intermediate polymer layers and two intermediate armour layers, each made of 40 steel tendons. The capability of the method in capturing the detailed nonlinear effects and the great advantage in terms of significant CPU time saving are demonstrated by comparing the results obtained on elements of pipe of different lengths, equal to one pitch length L p as well as L p/5, L p/20 and L p/40.
用于分析柔性立管的小规模有限元建模
DOI: --
发表时间: 2015
期刊: --
影响因子: --
作者:
M.T. Rahmati
通讯作者: M.T. Rahmati
使用 FEA 对柔性无粘结管道进行大规模分析和局部应力评估
DOI: 10.1115/omae2012-84249
发表时间: 2012
影响因子: 7.2
作者:
B. Edmans;G. Alfano;H. Bahai
通讯作者: H. Bahai
DOI: 10.1115/omae2007-29315
发表时间: 2007
影响因子: 7.2
作者:
Z. Tan;P. Quiggin;T. Sheldrake
通讯作者: T. Sheldrake
DOI: 10.1007/978-94-015-8494-4_21
发表时间: 1995
影响因子: 0.8
作者:
M. Amieur;S. Hazanov;C. Huet
通讯作者: C. Huet
DOI: 10.1016/j.cma.2010.09.010
发表时间: 2012
影响因子: 7.2
作者:
J. Haslinger;V. Janovský;T. Ligurský
通讯作者: T. Ligurský