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Twebb83's picture

Call for Papers - SIMULIA Customer Conference 2012

The international SIMULIA Customer Conference (SCC2012) will be held May 15-17, 2012 in Providence RI, USA. Abstracts for papers are due November 7, 2011.

All users of SIMULIA products including Abaqus FEA, Multiphysics, Isight and Simulation Lifecycle Management (SLM) are invited to submit an abstract.

wvmars's picture

Short Course: Engineering of Durable Elastomeric Structures, 26-27 July 2011, Ann Arbor, Michigan

Elastomers are outstanding in their ability to repeatedly endure large deformations, and they are often applied where fatigue performance is a critical consideration. Because the macromolecular structure of elastomers gives rise to a number of unique behaviors, appropriately specialized methods are needed to characterize, analyze, and design for durability. This 2-day course provides the know-how for engineering durable elastomeric components and systems. The course is taught at Axel Products, and includes live demos of typical behavior.

Reliability and engineering mechanics

The word "failure" can mean different things to different people.  Over the past couple of years, my interactions with various groups from industry has shown me that for some people failure means catastropic fracture/buckling while for others it can mean highly localized plastic yielding.  Even for relatively simple sandwich composite structures, there is no clearly agreed upon definition of the word.

Hydrostatic pressure stress element removal criterion in Abaqus.

Hi all,

         Recently  i tried  Hydrostatic pressure stress element removal criterion in Abaqus(19.2.8 Dynamic failure models in the 6.9 manual) . I used 75 Mpa as cut-off pressure stress and after which the material fails. During post - processing i tried to measure the pressure stress in an element that failed but the element did not fail at 75 Mpa and i checked few other elements, also i found the same thing none of them failed at 75 Mpa. What could be the possible reason? 


Hao Meng's picture

Mechanics of porous material

Hi all,

I am going simulate a plate of porous material (SiC) to evaluate its strengh.

Would someone share some knowledge on the mechanics of the porous materials.



Twebb83's picture

ExxonMobil and Tetrapak Keynote at SIMULIA Customer Conference - Early Bird Registration Open

Early bird registraion is open for the 2010  SCC which will be held May 25 - May 27, 2010 at the Rhode Island Convention Center in Providence, RI, just a short distance from SIMULIA's world headquarters.

There will be more than 80 customer presentations over the course of the 2 1/2 day conference. Advanced Seminars are offered on Monday May 24.

All users of SIMULIA products including Abaqus FEA, Isight, Fiper, and SIMULIA SLM invited to register for the conference.

Learn More at:

Dynamic failure analysis with ansys

I would like to perform a dynamic structural analysis with ansys. How can I include in the analysis a check after each time step about the status of some elements ( check whether they are broken)  "kill" them if need to and continue the analysis. Thanks, Ran 

Konstantin Volokh's picture

Journal Club Theme of September 2009: Elasticity and Failure

Let us consider interaction of two atoms/molecules/particles. The reference distance between them corresponds to zero interaction force and zero stored energy. The interaction passes three stages with the increase of the distance. At the first stage the force increases proportionally to the increasing distance: the linear stage. At the second stage the force-distance relationship deviates from the linear proportionality: the nonlinear stage. At the third stage the force drops with the increasing distance: the separation or failure stage.

Twebb83's picture

Abaqus Users' Conference - now the SIMULIA Customer Conference

2009 SIMULIA Customer Conference
May 18-21, 2009 • the Brewery, London, England

azadpoor's picture

Failure of protein materials in disease and other extreme conditions

The recent issue of Nature Materials includes a review paper on the deformation and failure of protein materials in physiologically extreme conditions and disease. The paper was interesting, so I am posting the abstract here. For the full-paper visit Nature Materials.

Nature Materials 8, 175 - 188 (2009) | doi:10.1038/nmat2387

Deformation and failure of protein materials in physiologically extreme conditions and disease

Compressive strength/failure test on brick

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Hi everyone. I'm new to this forum and quite new with FEA.

Currently i'm trying to find compressive strength or maximum failure stress on a modeled brick. Is't possible? What parameters or properties do i need in hand in order to proceed?


Gouse's picture

Mesh sensitivity in stress based failure criterion


 I want to simulate filaure in cement mortar. I am using Rankine criterion for detecting failure. For propagating damage i want to soften element. Here can I suddenly reduce the stiffness of the element to a negligible value as soon as it reaches specified failure criterion. I read in some book about mesh sensitivity in stress based failure criterion but i could not understand.Can some body expalin what is its consequence of suddenly reducing stiffness of element to a negligible value. How mesh will effect.

With Best Regards



Cohesive Failure Law

Can anyone please suggest material for Cohesive Failure Model. I need to know the basic concepts that deals with cohesive failure model. I would also like to know how deltanc, deltatc etc are formulated in this model. Please sugggest.


Hi all,

     Here I encoutered a error in ABAQUS when I include ALE with VUMAT. When ALE was not included with VUMAT, my job can work well while with the combination of VUMAT and ALE, the job cann't work any more due to a "Signal 8" error. And if I use a built-in material model and at the same time ALE, a job can work. Furthermore, element failure is considered in all of the cases.

    Anyone can give some suggetion? Thanks in advance!


Puzzle: What caused this failure?

Here's a puzzle for our readers.  The following image is of the surface of a failed joint followed by a picture of the joint (not the same one but a similar one) before joining.  What material is it? What caused the failure?  All manner of speculation is welcome.

Failed joint

Unfailed joint

Unfailed surface 2

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Failure surface 1

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