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Calibration of Pipeline Steel Model for Computational Running Ductile Fracture Assessment

Abstract

A novel fracture calibration method is presented for material models applied in finite element analysis of pipeline steels exposed to running ductile fracture. The calibration is based on the drop-weight tear test which is commonly applied for qualification of pipeline steels. The method is applied on three L450 steels with low, medium and high impact toughness. The calibrated fracture models are used in a numerical analysis of a full-scale fracture propagation test where the crack-driving force stems from a CO2-rich mixture that initially is in a dense phase. The results from the simulations are compared with experimental results.

Category

Academic chapter/article/Conference paper

Client

  • Research Council of Norway (RCN) / 257579

Language

English

Affiliation

  • SINTEF Industry / Materials and Nanotechnology
  • SINTEF Energy Research / Gassteknologi

Year

2019

Publisher

International Society of Offshore & Polar Engineers

Book

The 29th International Ocean and Polar Engineering Conference

Issue

29

ISBN

978-1-880653-85-2

View this publication at Cristin