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# j-integral

## Plastic J significance in CTOD equation

Mon, 2014-03-10 10:14 - kobe23I am working on the validation of CTOD.

In the evaluation of CTOD using the

J-integral approach as applied in ASTM E1290 and E1820, the plastic J

component is defined as (Npl*Apl)/(Bn*Bo)

Npl=dimensionless constant(plasticity)

Apl=area under load vs. displacement plot

Bn=ligamen length (W-a)

Bo=section thickness

On E1820 there are different functions provided for Npl if Apl is

evaluated differently (CMOD or load-line displacement).

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## J Integral with dynamic explicit

Sat, 2012-02-18 12:01 - anshulfHi,

I am trying to solve a 3PB specimen with a notch. I am doing the dynamic explicit analysis. I want to find the J-integral. Giving the J-integral as history output. Trying to run it gives following error.

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***ERROR: THIS KEYWORD IS NOT AVAILABLE IN Abaqus/Explicit

LINE IMAGE: *contourintegral, crackname=H-OUTPUT-2_CRACK-1, frequency=0,

normal, contours=2, cracktipnodes

----------

Running the same for dynamic implicit analysis works fine.

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## On the Path-dependence of the J-integral near a Stationary Crack in an Elastic-Plastic Material

Thu, 2010-01-28 16:48 - Chad LandisSubmitted to the Journal of Applied Mechanics on 2/1/2010.

## Stress intensity factors for a slanted crack under compression

Sun, 2009-05-03 17:51 - Julien JonvauxHello everyone,

Here is the problem I have: I'm modeling the geometry of a simple straight edge crack in a 2D elastic medium using Abaqus. I assume plain stress conditions. The crack makes an angle with the horizontal, is small enough to be considered as embedded in an infinite domain (ratio crack length/size of domain < 1/10) and I apply a vertical compressive load on top of my domain. I fixed one point in displacement at the bottom of it and the whole bottom edge is constrained not to move vertically.

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## Strain energy release rate of beam specimen using J-integral

Thu, 2007-03-01 14:59 - Mingji WangHi All,

Are there any good references showing the detailed derivations of elastic strain energy release rate using J-integral instead of differentiating compliance for end notch beam samples : DCB, 3/4 point bend ...? many thanks ...

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