Ductile fracture simulation of criepi STPT 410 pipe with circumferential crack

Hyun Suk Nam, Young Ryun Oh, Jae Jun Han, Chang Young Oh, Yun Jae Kim, Naoki Miura

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

This paper provides simulation of ductile crack growth in full-scale cracked pipe tests using an element-size dependent damage model. This method is based on the stress-modified fracture strain damage model. The stress-modified fracture strain model is determined to be incremental damage in terms of stress triaxiality and fracture strain for dimple fracture from tensile test result with FE analyses technique. To validate the proposed method, this research analyses STPT 410 cracked pipes test at 300°C taken from CRIEPI(Central Research Institute of Electric Power Industry). In order to calibrate the stress-modified fractures strain model, tensile tests and fracture toughness tests were compared with simulated results using element-size dependent damage model. Tensile specimen and fracture toughness specimen were extracted from STPT 410 steel pipe. The calibrated damage model predicts ductile crack growth in 5 type circumferential cracked pipes bending test. And these results were compared with the experimental results. The results show that the proposed method can simulate ductile crack growth in full-scale cracked pipe tests.

Original languageEnglish
Title of host publicationMaterials and Fabrication
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791846049
DOIs
Publication statusPublished - 2014 Jan 1
Externally publishedYes
EventASME 2014 Pressure Vessels and Piping Conference, PVP 2014 - Anaheim, United States
Duration: 2014 Jul 202014 Jul 24

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume6B
ISSN (Print)0277-027X

Conference

ConferenceASME 2014 Pressure Vessels and Piping Conference, PVP 2014
CountryUnited States
CityAnaheim
Period14/7/2014/7/24

ASJC Scopus subject areas

  • Mechanical Engineering

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