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XFEM Damage Evolution fracture parameters

Submitted by lans511 on Sat, 05/18/2013 - 21:14

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I am trying to model and centre crack inclined at 45 deg angle under uniaxial compression under mixed mode I and II. I am using Abaqus 6.12SE but I'm stuck with Damage Evolution parametres: I chose Damage for Traction Separation Laws, Maxps; Damage Evolution Type = Energy; Mixed bode behaviour = Power Law with power value 1; Now at the bottom what should be the input values of Normal Mode Fracture Energy, Shear Mode Fracture Energy 1st direction and Shear Mode Fracture Energy 2nd Direction. I need help asap. Thanks all.

NL springs query

Submitted by TheMig29 on Thu, 05/16/2013 - 14:08

education

Hello guys,

I am working on a project wherein there is a rubber material which gets compressed. Now I have the force-displacement curve for this rubber material. I intend to represent the rubber with NL springs.

The F-d curve mentiones the specimen details as 5*100mm. This i beleive is the tested specimen. Now how can I consider this for the whole rubber model???

I have n number of springs connected in parallel. How can I consider this when I use a F-d curve?

Any help is appreciated.

Thanks.

Biographical Memoir of Zay Jeffries by W.D. Nix

Submitted by William D. Nix on Tue, 05/14/2013 - 04:33

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history

I have written a National Academy of Sciences biographical memoir of Zay Jeffries, one of the great American metallurgists of the 20th century. I am posting the link to the NAS website here with the thought that some readers of iMechanica might be interested in the piece. Some will be interested to learn that Jeffries came very close to discovering dislocations some 18 years before the great papers of Taylor, Orowan and Polyanyi in 1934.

Important Questions on Applied Thermodynamics EME-401

Submitted by jeetender sing… on Fri, 04/26/2013 - 12:21

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Applied Thermodynamics EME-401

Important Questions on

Applied Thermodynamics EME-401 for GBTU

Analysis Type-Ultrasonic Wave

Submitted by mhdiab on Fri, 04/26/2013 - 00:20

Hey all,

Post- buckling analysis using ANSYS software

Submitted by Ajisha.R on Thu, 04/25/2013 - 13:29

education

How can post buckling analysis be carried out in ANSYS, when element Shell181 is used? what are the various methods and the procedure how to carry out the analysis ???

buoyancy

Submitted by urkabil on Tue, 04/23/2013 - 09:56

education

buoyancy

Can i say, the center of buoyancy and the center of gravity of the immersed part are same?

Johsnon-cook model parameter determination

Submitted by psarunirtt on Tue, 04/23/2013 - 06:45

education

Johsnon-cook model

Hello All!!!

I am Arun, Master degree student in South Korea.

My research field is : High strain rate experiemnts

I did High speed tensile test for aluminium alloy at four different speeds (1m/s, 5m/s, 10m/s and 15m/s)

I also did high temp tensile test for aluminium alloy at room temperature, 100 C, 250C

Now i have the stress Vs Strain curve for High speed tensile test and high temperature test

But, i don't know how to determine Johnson-Cook model parameter from the experimental results

FEA

Submitted by urkabil on Thu, 04/18/2013 - 10:51

education

buoyance effect

How to include water buoyancies effect in analysis for an abaqus model. The abaqus model is developed using shell and solid elements

'Getting your paper noticed' - Watch our latest training webcast

Submitted by Laure Ballu on Wed, 04/17/2013 - 14:56

At Elsevier, we are committed to supporting authors and reviewers. We have developed several series of freely-available, bite-sized training webcasts containing some useful tips and tricks on a range of valuable topics.

http://www.elsevier.com/authors/publishing-connect-training-webcasts

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