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software of interest to mechanicians

Wenbin Yu's picture

cdmHUB: Publish and Run Composites Simulation Tools In the Cloud

We recently launched the Composites Design and Manufacturing HUB (, a community-driven, collaborative platform that has the unique capability to let users to freely publish and run simulation codes in the cloud in addition to all the social network functionalities (blogging, questions/answers, groups, etc.).

Difficulties with User Subroutines in ABAQUS

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I'm a relatively new ABAQUS user, and have been experiencing some troubles with user subroutines (specifically UMAT's).


At the moment, I am trying to implement a tutorial UMAT available at this site:


I'm working with elastic.f and elas_axiforce.inp.  I've modified elas_axiforce.inp to have the lines for DEPVAR.

I'm using a linux operating system, with my .inp, .f, and .env files all in the same working directory.


Wenbin Yu's picture

Help compile list of available micromechanics codes

Computer simulations will be used more and more for composites design and manufacturing. Before an engineer can simulate, there are at least two questions: what are the tools available and which one works for my problem. Thus, as a start, cdmHUB plan to compile a list of micromechanics codes for the community, including commercial codes, public domain codes, or research codes. To make the list as complete as possible, we need your help.

Wenbin Yu's picture

Run GEBT online within a web browser

One can now run GEBT (Geometrically Exact Beam Theory), a general-purpose nonlinear composite beam solver, online within a web browser through Users do not have to install the code on their own machine. And users can access to immediate support if run into any questions. You are welcome to try out the code and let me know any of your questions. 

mmalekan's picture

Run Abaqus from a Java code

Dear all:


Is it possible to run Abaqus from a Java code? or is there any communication way between Abaqus and Java?

I want to simulate a simple problem and pass some info from Abaqus to Java code and vice versa.



M. Malekan


Case Study Effect of Pore Size on Pellet-Based Catalyst Flow

We have a new case study on our website based on research at Imperial College into multiscale tomography and calculating permeability for catalysts. The project involved studying the influence of pore structure on fluid flow across large length scales in silica-alumina pellet-based catalysts.

3D data at different length scales was obtained from XMT, DBFIB-SEM and ET scanning and segmented into a binarised dataset.

Composite Layup in ABAQUS: Field output at integration points

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Hi all,

I am trying to understand how Composite Layup works in ABAQUS. I have specified 5 integration points for each ply in the Composite Layup definition but I am getting the field output only at 2 integration points in every ply (the top and the bottom-most points). I do not understand this anamoly. Is there some additional definition that we need to give while defining the Layup so as to be able to see the field output (atleast stress) at all the integration points. 


Any help would be appreciated. Thanks in advance :)



How to put concrete in a brb(Buckling restrained brace) in Abaqus?

hi every body
I model a brb(Buckling restrained brace) in Abaqus but my question is How to put concrete in a brb or How do I define the concrete inside the brb that work together?

Portuguese version of cadec-online available

The Protuguese version of is available. Previous versions include English, Spanish, and Farsi. English is the base version for the developement of the app. I did the Spanish translation. Farsi and Portuguese were done by volunters. We are looking for volunteers for other translations. pls contact me if interested.  

Simpleware Case Study: Fuel Cell Microstructure from FIB Data

In this case study, based on work carried out at Imperial College and University College London, research was carried out into the performance of solid oxide fuel cells (SOFCs). The microstructure of an SOFC electrode was obtained using FIB tomography, and a volume mesh generated in Simpleware software, with the model then exported to Abaqus CAE. Boundary conditions were set in the solver and stress analysis conducted, which were able to approxiamte peak maximum principal stresses in response to thermal expansion.


I need to model a reinforced concrete beam strengthened externally by frP? Can anyone share useful  material how to model this  in abaqus or ansys ?






svp quelqu'un peut m'aider à installer FRANC2D, et m'indique comment translater un fichier d'ixtension *.inp du abaqus à FRANC2D

et merci d'avence


aslan mohammadpour's picture

A FE code with large deformation contact capability and large elasto plastic analysis in Henky strain

Hi every one...

I finished my master in mechanical engineearing about eight month ago ... and in my Master career, I wrote a Fortran Finte element code with capabality of  mortar cantact analysis[1,2] and rate independent plasticity with kinematic and isotropic hardening and with large deformation capabilty for isotropic materials[3,4]. My code converges very well and I achieved quadratic convergence and I didn't use any comercial Fe packages like ansys and abaqus .....

J-integral contour path in ABAQUS

I have calculated the J-integral using ABAQUS for 5 contours but I could not find any information about the paths of the J-integral contours. Do you know how we can get the paths of the requested J-integral contours or equivalently how we can define the paths of contours in ABAQUS? 


element coordinate system orientation after nonlinear static structural solution

Hi. I'm working on multiscale modeling of soft tissues. I'm working
on modeling an orthotropic wavy fiber in WB. I write an APDL routine to
change the element coordinate system of each element with accordance to
the fiber curvature. Ansys documentation said that in the case of large
deflection analysis, the element coordinate system will be rotated with
accordance to element rigid body rotation. My problem is that, after the
solution, the elements coordinate system of some elements rotate

David Rawlins's picture

FEBio2 Released


It’s with great pleasure that we announce the release of version 2.0 of FEBio (Finite Elements for Biomechanics). This new version can be downloaded here .  FEBio is an open-source finite element package, specifically designed for solving problems in the field of computational biomechanics. This new version includes some major changes and contains a number of new and exciting features. Some of the noteworthy changes and additions are listed below.

David Rawlins's picture

FEBio2 Release

Taxonomy upgrade extras: 
Attila Kossa's picture

Introduction of the hyperfoam model in ABAQUS

Dear Researchers,


I am trying to find out which was the first ABAQUS version, wchich includes the hyperfoam material model. I haven't found any version history about this. Could someone tell me the very first version of ABAQUS in which the hyperfoam model was included?


Thank You!

Kind Regards,

Attila KOSSA

Modelling of Thermosyphon Evaporator in Abaqus

Is it possible to model and do the thermal analysis of a thermosiphon loop using ABAQUS.

Measure Curved Edge length in ABAQUS CAE

Greetings all,

i want to know, is there any way to measure edge length ( "curves" specifically,  not looking for straight edge length  using distance between vertices as query feature :) ), and also to get vertices co-ordinates in  local co-ordinate system; in ABAQUS CAE or using python scripting.

my problem is somehow related to above query,  can manage solution with 'other' tricks, but want to know any standard methods are avaliable.

Any help is appreciated.




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