Finite element analysis of damage in pipeline bends

Heron

A.E. Swart³  A. Scarpas¹  S.A. Karamanos²  J. Blaauwendraad¹ 

[1] 3 Delft University of Technology, Faculty of Civil Engineering and Geosciences, the Netherlands;2 University of Thessaly, Department of Mechanical & Industrial Engineering, Volos, Greece;1 CORUS RD&T, IJmuiden, the Netherlands

关键词: Tube element;    Gurson model;    computational plasticity;    damage;   

DOI  :  

学科分类：建筑学

来源: Technische Universiteit Delft * Faculty of Civil Engineering

【 摘 要 】

The present paper describes a numerical formulation for the analysis of damage in steel pipeline bends. In particular, the numerical implementation of Gurson plasticity model is described in the framework of a special element, referred to as ?tube element?. This is a three-node element, which simulates pipe behavior combining longitudinal deformation with cross-sectional ovalization and warping. The numerical results obtained with the tube elements are compared with results obtained with selective integrated Heterosis elements. The constitutive equations are integrated through an Euler-backward numerical scheme, enforcing the condition of zero stress in the radial direction of the pipe. Results for isotropic hardening have been obtained.

【 授权许可】

Unknown