Energy-based numerical modeling of the strain rate effect on fracture toughness of SA508 Gr. 1a

Hyun Suk Nam; Yun Jae Kim; Jin Weon Kim; Jong Sung Kim

doi:10.1177/0309324717696609

Energy-based numerical modeling of the strain rate effect on fracture toughness of SA508 Gr. 1a

Hyun Suk Nam, Yun Jae Kim, Jin Weon Kim, Jong Sung Kim

School of Mechanical Engineering

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

7 Citations (Scopus)

Abstract

This article presents an energy-based method to simulate ductile tearing under dynamic loading conditions. The strain rate-dependent material properties are characterized by the Johnson-Cook-type model. The damage model is defined based on the multi-axial fracture strain energy concept. The proposed damage model is applied to simulate the fracture toughness test of SA508 Gr. 1a under four different test speeds. Simulated results show a good overall agreement with the experimental results.

Original language	English
Pages (from-to)	177-189
Number of pages	13
Journal	Journal of Strain Analysis for Engineering Design
Volume	52
Issue number	3
DOIs	https://doi.org/10.1177/0309324717696609
Publication status	Published - 2017 Apr 1

Keywords

Ductile fracture
finite element damage analysis
high strain rate condition
multi-axial fracture strain energy locus
strain rate effect

ASJC Scopus subject areas

Modelling and Simulation
Mechanics of Materials
Mechanical Engineering
Applied Mathematics

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abstract = "This article presents an energy-based method to simulate ductile tearing under dynamic loading conditions. The strain rate-dependent material properties are characterized by the Johnson-Cook-type model. The damage model is defined based on the multi-axial fracture strain energy concept. The proposed damage model is applied to simulate the fracture toughness test of SA508 Gr. 1a under four different test speeds. Simulated results show a good overall agreement with the experimental results.",

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AU - Kim, Yun Jae

AU - Kim, Jin Weon

AU - Kim, Jong Sung

N1 - Publisher Copyright: © Institution of Mechanical Engineers.

PY - 2017/4/1

Y1 - 2017/4/1

N2 - This article presents an energy-based method to simulate ductile tearing under dynamic loading conditions. The strain rate-dependent material properties are characterized by the Johnson-Cook-type model. The damage model is defined based on the multi-axial fracture strain energy concept. The proposed damage model is applied to simulate the fracture toughness test of SA508 Gr. 1a under four different test speeds. Simulated results show a good overall agreement with the experimental results.

AB - This article presents an energy-based method to simulate ductile tearing under dynamic loading conditions. The strain rate-dependent material properties are characterized by the Johnson-Cook-type model. The damage model is defined based on the multi-axial fracture strain energy concept. The proposed damage model is applied to simulate the fracture toughness test of SA508 Gr. 1a under four different test speeds. Simulated results show a good overall agreement with the experimental results.

KW - Ductile fracture

KW - finite element damage analysis

KW - high strain rate condition

KW - multi-axial fracture strain energy locus

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Energy-based numerical modeling of the strain rate effect on fracture toughness of SA508 Gr. 1a

Abstract

Keywords

ASJC Scopus subject areas

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