Application of the GTN model to quantify constraint effects on ductile fracture of API X65 steels

Yun Jae Kim; Chang Kyun Oh; Chang Sik Oh

doi:10.4028/0-87849-413-8.667

Application of the GTN model to quantify constraint effects on ductile fracture of API X65 steels

Yun Jae Kim, Chang Kyun Oh, Chang Sik Oh

School of Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

This paper quantifies the effects of geometry, the loading mode and the specimen size on fracture toughness of the API X65 steel, via plane strain finite element (FE) damage analyses using the GTN model. The validity of FE damage analyses is checked first by comparing with experimental test data for small-sized, cracked bar test. Then the analyses are extended to investigate the effects of the relative crack depth and the specimen size on fracture toughness. It is shown that fracture toughness of the API X65 steel increases with decreasing the relative crack depth and increasing the specimen size.

Original language	English
Pages (from-to)	667-670
Number of pages	4
Journal	Key Engineering Materials
Volume	324-325 II
DOIs	https://doi.org/10.4028/0-87849-413-8.667
Publication status	Published - 2006

Keywords

API X65
Constraint effect
FE damage analysis
Fracture toughness
GTN model

ASJC Scopus subject areas

General Materials Science
Mechanics of Materials
Mechanical Engineering

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10.4028/0-87849-413-8.667

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title = "Application of the GTN model to quantify constraint effects on ductile fracture of API X65 steels",

abstract = "This paper quantifies the effects of geometry, the loading mode and the specimen size on fracture toughness of the API X65 steel, via plane strain finite element (FE) damage analyses using the GTN model. The validity of FE damage analyses is checked first by comparing with experimental test data for small-sized, cracked bar test. Then the analyses are extended to investigate the effects of the relative crack depth and the specimen size on fracture toughness. It is shown that fracture toughness of the API X65 steel increases with decreasing the relative crack depth and increasing the specimen size.",

keywords = "API X65, Constraint effect, FE damage analysis, Fracture toughness, GTN model",

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N2 - This paper quantifies the effects of geometry, the loading mode and the specimen size on fracture toughness of the API X65 steel, via plane strain finite element (FE) damage analyses using the GTN model. The validity of FE damage analyses is checked first by comparing with experimental test data for small-sized, cracked bar test. Then the analyses are extended to investigate the effects of the relative crack depth and the specimen size on fracture toughness. It is shown that fracture toughness of the API X65 steel increases with decreasing the relative crack depth and increasing the specimen size.

AB - This paper quantifies the effects of geometry, the loading mode and the specimen size on fracture toughness of the API X65 steel, via plane strain finite element (FE) damage analyses using the GTN model. The validity of FE damage analyses is checked first by comparing with experimental test data for small-sized, cracked bar test. Then the analyses are extended to investigate the effects of the relative crack depth and the specimen size on fracture toughness. It is shown that fracture toughness of the API X65 steel increases with decreasing the relative crack depth and increasing the specimen size.

KW - API X65

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KW - FE damage analysis

KW - Fracture toughness

KW - GTN model

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Application of the GTN model to quantify constraint effects on ductile fracture of API X65 steels

Abstract

Keywords

ASJC Scopus subject areas

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