Numerical Evaluation of Paris-Regime Crack Growth Rate Based on Plastically Dissipated Energy

Parag G. Nittur; Anette M Karlsson; Leif A. Carlsson

doi:10.1016/j.engfracmech.2014.04.013

Numerical Evaluation of Paris-Regime Crack Growth Rate Based on Plastically Dissipated Energy

Parag G. Nittur, Anette M Karlsson, Leif A. Carlsson

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

Abstract

The crack growth rate during cyclic loading is investigated via numerical simulations. The crack advancement is governed by a propagation criterion that relates the increment in plastically dissipated energy ahead of the crack tip to a critical value. Once this critical value is satisfied, crack propagation is modeled via a node release scheme. Thus, the crack growth rate is an output from the numerical simulation. The crack growth rate predicted by the proposed scheme is compared with published experimental crack growth data in the Paris-regime for selected metals. A good match is found between the experimentally observed crack growth rates and the numerically obtained results. The Paris coefficients are subsequently evaluated from the numerically obtained crack growth rates.

Original language	American English
Journal	Engineering Fracture Mechanics
Volume	124-125
DOIs	https://doi.org/10.1016/j.engfracmech.2014.04.013
State	Published - Jul 1 2014

Keywords

Cyclic crack growth; Plastic dissipated energy; Reverse plastic zone; Paris law; ABAQUS

Disciplines

Mechanical Engineering

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10.1016/j.engfracmech.2014.04.013License: CC BY

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http://www.sciencedirect.com/science/article/pii/S0013794414001179

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title = "Numerical Evaluation of Paris-Regime Crack Growth Rate Based on Plastically Dissipated Energy",

abstract = " The crack growth rate during cyclic loading is investigated via numerical simulations. The crack advancement is governed by a propagation criterion that relates the increment in plastically dissipated energy ahead of the crack tip to a critical value. Once this critical value is satisfied, crack propagation is modeled via a node release scheme. Thus, the crack growth rate is an output from the numerical simulation. The crack growth rate predicted by the proposed scheme is compared with published experimental crack growth data in the Paris-regime for selected metals. A good match is found between the experimentally observed crack growth rates and the numerically obtained results. The Paris coefficients are subsequently evaluated from the numerically obtained crack growth rates.",

keywords = "Cyclic crack growth; Plastic dissipated energy; Reverse plastic zone; Paris law; ABAQUS",

author = "Nittur, \{Parag G.\} and Karlsson, \{Anette M\} and Carlsson, \{Leif A.\}",

note = "Nittur, P. G., Karlsson, A. M., and Carlsson, L. A., 2014, {"}Numerical Evaluation of Paris-Regime Crack Growth Rate Based on Plastically Dissipated Energy,{"} Engineering Fracture Mechanics, 124–125, pp. 155-166",

year = "2014",

month = jul,

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doi = "10.1016/j.engfracmech.2014.04.013",

language = "American English",

volume = "124-125",

journal = "Engineering Fracture Mechanics",

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T1 - Numerical Evaluation of Paris-Regime Crack Growth Rate Based on Plastically Dissipated Energy

AU - Nittur, Parag G.

AU - Karlsson, Anette M

AU - Carlsson, Leif A.

N1 - Nittur, P. G., Karlsson, A. M., and Carlsson, L. A., 2014, "Numerical Evaluation of Paris-Regime Crack Growth Rate Based on Plastically Dissipated Energy," Engineering Fracture Mechanics, 124–125, pp. 155-166

PY - 2014/7/1

Y1 - 2014/7/1

N2 - The crack growth rate during cyclic loading is investigated via numerical simulations. The crack advancement is governed by a propagation criterion that relates the increment in plastically dissipated energy ahead of the crack tip to a critical value. Once this critical value is satisfied, crack propagation is modeled via a node release scheme. Thus, the crack growth rate is an output from the numerical simulation. The crack growth rate predicted by the proposed scheme is compared with published experimental crack growth data in the Paris-regime for selected metals. A good match is found between the experimentally observed crack growth rates and the numerically obtained results. The Paris coefficients are subsequently evaluated from the numerically obtained crack growth rates.

AB - The crack growth rate during cyclic loading is investigated via numerical simulations. The crack advancement is governed by a propagation criterion that relates the increment in plastically dissipated energy ahead of the crack tip to a critical value. Once this critical value is satisfied, crack propagation is modeled via a node release scheme. Thus, the crack growth rate is an output from the numerical simulation. The crack growth rate predicted by the proposed scheme is compared with published experimental crack growth data in the Paris-regime for selected metals. A good match is found between the experimentally observed crack growth rates and the numerically obtained results. The Paris coefficients are subsequently evaluated from the numerically obtained crack growth rates.

KW - Cyclic crack growth; Plastic dissipated energy; Reverse plastic zone; Paris law; ABAQUS

UR - https://engagedscholarship.csuohio.edu/enme_facpub/283

U2 - 10.1016/j.engfracmech.2014.04.013

DO - 10.1016/j.engfracmech.2014.04.013

M3 - Article

VL - 124-125

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

ER -

Numerical Evaluation of Paris-Regime Crack Growth Rate Based on Plastically Dissipated Energy

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