iMechanica - 3D crack analysis using ansys
https://imechanica.org/taxonomy/term/1258
enHow to extend crack in Mixed mode crack growth in Ansys ?
https://imechanica.org/node/17891
<div class="field field-name-taxonomy-vocabulary-6 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/76">research</a></div></div></div><div class="field field-name-taxonomy-vocabulary-8 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/6367">3-D crack</a></div><div class="field-item odd"><a href="/taxonomy/term/4833">3D crack Modeling</a></div><div class="field-item even"><a href="/taxonomy/term/1258">3D crack analysis using ansys</a></div><div class="field-item odd"><a href="/taxonomy/term/2418">3D Fracture analysis thru Ansys</a></div><div class="field-item even"><a href="/taxonomy/term/7389">Computational Fracture Mechancis</a></div></div></div><div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p>Hi, I am doing project on mixed mode crack growth of semi elliptical crack in gas turbine components under cyclic loading. Ansys has capability for finding J,K using CINT command. But, In mixed mode crack growth, i dont know how to deal with nodes and how to create random crack with new node coordinates obtained from previous steps. If you have any ansys code related to creating crack and finding fracture parameters like K, J (mode 1 or mixed mode), Can you please give me the code.</p>
<p>Thanks</p>
<p>(I cant use any other software, only Ansys)</p>
</div></div></div>Thu, 05 Feb 2015 13:21:12 +0000saimohan3517891 at https://imechanica.orghttps://imechanica.org/node/17891#commentshttps://imechanica.org/crss/node/17891Can any one provide any apdl code to perform automatic fatigue crack growth ??
https://imechanica.org/node/17890
<div class="field field-name-taxonomy-vocabulary-6 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/76">research</a></div></div></div><div class="field field-name-taxonomy-vocabulary-8 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/5823">3D fracture</a></div><div class="field-item odd"><a href="/taxonomy/term/2418">3D Fracture analysis thru Ansys</a></div><div class="field-item even"><a href="/taxonomy/term/1258">3D crack analysis using ansys</a></div><div class="field-item odd"><a href="/taxonomy/term/4833">3D crack Modeling</a></div></div></div><div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p>Hi, I am using Ansys Apdl for 3d fatigue crack growth. I need any one code to understand how it can be automized (recreating crack with node shift and remeshing).</p>
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<p>Thank you</p>
</div></div></div>Thu, 05 Feb 2015 13:17:29 +0000saimohan3517890 at https://imechanica.orghttps://imechanica.org/node/17890#commentshttps://imechanica.org/crss/node/17890use of CINT command for J integral calculation of 3d model with ansys
https://imechanica.org/node/10072
<div class="field field-name-taxonomy-vocabulary-8 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/1258">3D crack analysis using ansys</a></div><div class="field-item odd"><a href="/taxonomy/term/1545">J integral</a></div></div></div><div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p>
I used for the first time the CINT command with ansys, and I get strange results:
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negative values
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very different values for 2 adjacent nodes on the crack front
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non converging values (values fluctuating from 1 contour to another, going up and down)
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Also, i don't know what are the units of the J integral (I am using SI units, dimensions in mm ). It's important to know so I can calculate the SIF
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How can I know what contour gives the best result? what are the units of the Jintegral in the SI.
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Anybody have some information for me?
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Thanks
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</div></div></div>Mon, 11 Apr 2011 01:13:13 +0000proussy10072 at https://imechanica.orghttps://imechanica.org/node/10072#commentshttps://imechanica.org/crss/node/100723D modelling of an ellliptical crack in ANSYS
https://imechanica.org/node/9600
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p>I am a beginner in FEM and just started using ANSYS. I need to study the stresses and SIF at the crack front of an elliptical crack inside a material subjected to a stress perpendicular to the crack plane. Any details on how I should build my model? </p>
<p>What is the easiest way to define a cracked area, and crack front and then mesh it</p>
<p>How can i merge together a cracked area and an unmeshed area? </p>
<p>I found a lot of links and articles that states they did it, but none explained the procedure do do it. </p>
<p> </p>
<p>Thanks </p>
</div></div></div><div class="field field-name-taxonomy-forums field-type-taxonomy-term-reference field-label-above"><div class="field-label">Forums: </div><div class="field-items"><div class="field-item even"><a href="/forum/666">Fracture Mechanics Forum</a></div></div></div><div class="field field-name-taxonomy-vocabulary-8 field-type-taxonomy-term-reference field-label-above"><div class="field-label">Free Tags: </div><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/1258">3D crack analysis using ansys</a></div></div></div>Tue, 11 Jan 2011 01:28:28 +0000proussy9600 at https://imechanica.orghttps://imechanica.org/node/9600#commentshttps://imechanica.org/crss/node/9600i want help to get cracks and strains in r.c columns
https://imechanica.org/node/8778
<div class="field field-name-taxonomy-vocabulary-6 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/76">research</a></div></div></div><div class="field field-name-taxonomy-vocabulary-8 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/1258">3D crack analysis using ansys</a></div></div></div><div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p><span>Hello all,</span><span>I am an M.S student, my subject in modelling of high strength concrete column under eecentric loading. </span><span>I made a model of reinforced concrete column with in ANSYS by solid65 to represent concrete and link8 for steel.</span><span>My model is 200*200*4000 mm, i choose multi., conc.,and elastic linear for concrete, closing crushing for it, for steel bilinear, elastic.</span><span>Slenderness ratio (l/d)=20 </span><span>Although Using large displacement analysis option, model give me very small displacement (less than 1/10 of tested sample) and show no effect of second order, and showing no cracking in tension side (<em>model is rigid</em>).</span><span>Model end boundary condition: displacement restricted in three directions at one end, and in two horizontal directions at the other end.</span><span>Please, if anyone can help me to get appropriate displacement, strains, crack for this model.</span><span>My e-mail address:<a href="mailto:hany_well70@hotmail.com">hany_well70@hotmail.com</a> </span> </p>
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<a href="mailto:abaqus@yahoogroups.com"></a>
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</div></div></div>Thu, 26 Aug 2010 09:37:39 +0000hany_3338778 at https://imechanica.orghttps://imechanica.org/node/8778#commentshttps://imechanica.org/crss/node/8778poissons ratio effect on Stress intensity factor
https://imechanica.org/node/2377
<div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p>
Hi :
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I am obtainning the Stress Intensity factors along the front of cracks in a 3D FE models (ANSYS). The loading mode is mixed and Ki, Kii and Kii should be estimated. I have noticed that the SIF strongly depends on the poisson's ratio but i understand Ki does not depends on the elastic properties of material. I know ANSYS calculates the SIF from the displacements at the crack tip using E and mu, but i did not expect so huge differences in SIF values, In fact all analytical predictions for SIF does not depends on poisson's ratio....
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could anybody help me to understand where the problem is?
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Thank you in advance.
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</div></div></div><div class="field field-name-taxonomy-forums field-type-taxonomy-term-reference field-label-above"><div class="field-label">Forums: </div><div class="field-items"><div class="field-item even"><a href="/forum/666">Fracture Mechanics Forum</a></div></div></div><div class="field field-name-taxonomy-vocabulary-6 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/76">research</a></div></div></div><div class="field field-name-taxonomy-vocabulary-8 field-type-taxonomy-term-reference field-label-above"><div class="field-label">Free Tags: </div><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/1258">3D crack analysis using ansys</a></div></div></div>Thu, 29 Nov 2007 16:55:22 +0000Miguel A. Olivares2377 at https://imechanica.orghttps://imechanica.org/node/2377#commentshttps://imechanica.org/crss/node/23773D Crack analyses using ANSYS
https://imechanica.org/node/1851
<div class="field field-name-taxonomy-vocabulary-8 field-type-taxonomy-term-reference field-label-hidden"><div class="field-items"><div class="field-item even"><a href="/taxonomy/term/1258">3D crack analysis using ansys</a></div></div></div><div class="field field-name-body field-type-text-with-summary field-label-hidden"><div class="field-items"><div class="field-item even"><p>i m dan doing ME Engineering Design.I m doing project in the area of probabilistic fracture mechanics.,So i need how to find SIF,J integral,Energy release rate,CDOT for all type of crack (2D,3D)..,I want some of the material related to this..,i m using Ansys..,so complete step by step procedure in Crack analysis using analysis i want 3d Crack analysis</p>
</div></div></div>Wed, 29 Aug 2007 13:40:38 +0000Dan Sathiaraj1851 at https://imechanica.orghttps://imechanica.org/node/1851#commentshttps://imechanica.org/crss/node/1851Error | iMechanica