Hi guys,

I'm working on an ABAQUS extension/plug-in of a sort and I'd like to replicate results for a single 4-node plane stress element produced by the ABAQUS incremental/nonlinear static solver.

I assumed the relationship is:

Postdoctoral
Fellow in Orthopaedics Surgical Simulations and Applied Computational
Mechanics, Biomedical Engineering Department at Northwestern University, Chicago,
Illinois

Hi,

I'm stucking with my subroutine. May ask anybody to have a look the the file. 

I run a simple model that and try to run it,but an error message was appeared as below;   ***ERROR: USER SUBROUTINE UEL MISSING

I don't know what is the problem. I did locate the input (.inp) and user (.f) in the same folder and run it (abaqus job=.... user= ...ff int )

Hope to get help from anybody...

Aida

Did you miss the live Abaqus 6.11 release webinar? Download and view the recording at your convenience by visiting: http://www.3ds.com/products/simulia/resource-center/webinars-on-demand/

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Have a prob in Analysing  FEM discrete model of Beam column connection [both monolithic and precast] for crack behaviour indisplacement controlled cyclic loading program.

Tried with various values of closed and open crack and co-efficient. 

applied -1 for crack and changed even the keypoint

The 2011 SIMULIA Customer Conference (SCC) will be held May 16-19, 2011 in beautiful Barcelona, Spain. A city filled with world famous museums, historical sites, shopping, entertainment, and culinary delights.

We are pleased to invite you to join your colleagues and share your Abaqus FEA experience by submitting an abstract by November 8, 2010.

Abstracts are also being accepted for papers detailing the use of Isight for simulation process automation and design optimization.

As the 2010 SIMULIA Customer Conference approaches, it reminds me of a thought-provoking presentation given by Dale Berry of SIMULIA at the 2009 SCC in London.

He reminded the audience, of engineers and researchers, that Realistic Simulation is not only good for evaluating mechanical behavior of product performance, but it’s also an indespenible tool for driving innovative research that improves our lives and society.

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.

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Hi

Am currently running Ansys analysis using shell181, and Tsai-Wu FC, have some good working first ply failure models

Trying to convert this into a progressive failure model, with no luck so far.

Anyone know something about this, how it could be done?

I suspect by looping, and fortran code, but I do not really have a clue..

The ADINA System offers comprehensive capabilities for linear and nonlinear finite element analysis of solids & structures, CFD, fluid-structure interactions, multiphysics, and complete pre- and post-processing with interfaces to various CAD and CAE systems. It also offers user subroutines for material models, elements, loads...

Hi,

I have square plate with circular inclusion, I have added a cohesive elements around the inclusion. Inclusion is harder and matrix is softer. I have applied both tensile and compressive loads on tha plate, I could able see debonding for tensile loading but i could not see debonding fro compressive load. I am using maximum stress criterion for damage initiation and for damage evolution fracture energy. I am doing simulations in Abaqus. Now I want to replace normal stress criterion by some shear criterion, can I able do it. Is there any shear based crietrion for cohesive zone modeling.

With Warm regards

Gouse

The linked two of my studies can be used as references for Zhigang’s lecture on Instabilities.

(1) Catastrophic fracture

This blog focuses on viscoelasticity (http://en.wikipedia.org/wiki/Viscoelasticity)

I am writing to ask about the state of the art in finite element simulation using nonlinear elasticity and explicit dynamics.

Consider, for instance, a 3-d simulation of a hyperelastic beam that's fixed on one end, then  twisted about its long axis by 360 degrees and released. If we apply no friction or viscosity, the sum of kinetic plus potential energy should remain constant as the material springs back and oscillates.

Which FEM codes do the best at conserving KE+PE for a simulation of this type?  If you drop the time step, can you get energy conservation to many significant figures, as one can with, for instance, molecular dynamics simulation? 

I'm curious because I've recently written my own 3-d nonlinear explicit dynamics code that provides very high precision energy conservation, and I'm wondering if it's any better or worse than the nonlinear explicit dynamics codes already available.