A micromechanical cyclic void growth model for ultra-low cycle fatigue

Ravi Kiran; Kapil Khandelwal

doi:10.1016/j.ijfatigue.2014.08.010

A micromechanical cyclic void growth model for ultra-low cycle fatigue

Ravi Kiran, Kapil Khandelwal

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

53 Scopus citations

Abstract

The influence of stress triaxiality and Lode parameter on microvoid growth phase of ductile fracture under ultra-low cycle fatigue (ULCF) (N_f < 100, N_f = cycles to failure) loading is investigated using micromechanical analyses. A new micromechanical cyclic void growth model (MM-CVGM) to predict the ULCF life of ASTM A992 steels is presented. The MM-CVGM is calibrated and validated from the experiments conducted on axisymmetrically notched specimens. Number of cycles to failure (N_f) and the fracture initiation locations predicted by the model closely matched the experimental observations.

Original language	English (US)
Pages (from-to)	24-37
Number of pages	14
Journal	International Journal of Fatigue
Volume	70
DOIs	https://doi.org/10.1016/j.ijfatigue.2014.08.010
State	Published - Jan 2015
Externally published	Yes

Keywords

Cyclic void growth model
Ductile fracture
Lode parameter
Stress triaxiality
Ultra-low cycle fatigue

ASJC Scopus subject areas

Modeling and Simulation
General Materials Science
Mechanics of Materials
Mechanical Engineering
Industrial and Manufacturing Engineering

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10.1016/j.ijfatigue.2014.08.010

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title = "A micromechanical cyclic void growth model for ultra-low cycle fatigue",

abstract = "The influence of stress triaxiality and Lode parameter on microvoid growth phase of ductile fracture under ultra-low cycle fatigue (ULCF) (Nf < 100, Nf = cycles to failure) loading is investigated using micromechanical analyses. A new micromechanical cyclic void growth model (MM-CVGM) to predict the ULCF life of ASTM A992 steels is presented. The MM-CVGM is calibrated and validated from the experiments conducted on axisymmetrically notched specimens. Number of cycles to failure (Nf) and the fracture initiation locations predicted by the model closely matched the experimental observations.",

keywords = "Cyclic void growth model, Ductile fracture, Lode parameter, Stress triaxiality, Ultra-low cycle fatigue",

author = "Ravi Kiran and Kapil Khandelwal",

year = "2015",

month = jan,

doi = "10.1016/j.ijfatigue.2014.08.010",

language = "English (US)",

volume = "70",

pages = "24--37",

journal = "International Journal of Fatigue",

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T1 - A micromechanical cyclic void growth model for ultra-low cycle fatigue

AU - Kiran, Ravi

AU - Khandelwal, Kapil

PY - 2015/1

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N2 - The influence of stress triaxiality and Lode parameter on microvoid growth phase of ductile fracture under ultra-low cycle fatigue (ULCF) (Nf < 100, Nf = cycles to failure) loading is investigated using micromechanical analyses. A new micromechanical cyclic void growth model (MM-CVGM) to predict the ULCF life of ASTM A992 steels is presented. The MM-CVGM is calibrated and validated from the experiments conducted on axisymmetrically notched specimens. Number of cycles to failure (Nf) and the fracture initiation locations predicted by the model closely matched the experimental observations.

AB - The influence of stress triaxiality and Lode parameter on microvoid growth phase of ductile fracture under ultra-low cycle fatigue (ULCF) (Nf < 100, Nf = cycles to failure) loading is investigated using micromechanical analyses. A new micromechanical cyclic void growth model (MM-CVGM) to predict the ULCF life of ASTM A992 steels is presented. The MM-CVGM is calibrated and validated from the experiments conducted on axisymmetrically notched specimens. Number of cycles to failure (Nf) and the fracture initiation locations predicted by the model closely matched the experimental observations.

KW - Cyclic void growth model

KW - Ductile fracture

KW - Lode parameter

KW - Stress triaxiality

KW - Ultra-low cycle fatigue

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DO - 10.1016/j.ijfatigue.2014.08.010

M3 - Article

AN - SCOPUS:84907494152

SN - 0142-1123

VL - 70

SP - 24

EP - 37

JO - International Journal of Fatigue

JF - International Journal of Fatigue

ER -

A micromechanical cyclic void growth model for ultra-low cycle fatigue

Abstract

Keywords

ASJC Scopus subject areas

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