software

Hi Sirs,

As title, I wondering if the problem can be solved with only material residual stress but no other external load applied?

After several trials, Abaqus returns message
"MASS OR DIFFERENTIAL STIFFNESS MATRIX IS COMPLETELY NULL. THE EIGENPROBLEM CANNOT BE SOLVED. IN A *BUCKLE ANALYSIS THE MOST LIKELY CAUSE IS THAT A NONZERO LOADING PATTERN WAS NOT SPECIFIED VIA *BOUNDARY, *CLOAD, *DLOAD, ETC,. SEE Eigenvalue Buckling Prediction IN THE ABAQUS/STANDARD USERS MANUAL"

We're running a series of free workshops at the AMP Technology Centre in Rotherham (June 27th), the University of Liverpool (June 28th) and the University of Leeds (June 29th) this month, where we'll be explaining the benefits of Simpleware for working with 3D image data.

Dear Colleagues,

A brand new Siconos 4.0.0 is out !! Siconos is now distributed under Apache 2.0 license.

What is Siconos ?

Siconos is an open-source scientific software primarily targeted at modeling and simulating nonsmooth dynamical systems in C++ and in Python:

 + Mechanical systems (rigid or solid) with unilateral contact and Coulomb friction and impact (nonsmooth mechanics, contact dynamics, multibody systems dynamics or granular materials).

Hello All,

I am working on stochastic upscalling of damage in concrete microstructure. Can someone provide a UMAT for Mazar's damage model or any resource to help me create UMAT on my own.

Thank you.

Vasav Dubey

Texas A&M University

Texas, USA

Dear iMechanica community,

you can find the UMAT-implementation of a Zener model, i.e. a Maxwell model parallel to a spring, in my PhD thesis:

“Upsetting and Viscoelasticity of Vitreous SiO2: Experiments, Interpretation and Simulation“
Technische Universitaet Berlin, Germany, 2006
https://depositonce.tu-berlin.de/handle/11303/1574
http://dx.doi.org/10.14279/depositonce-1277

Wednesday, June 1, 2016 

This webinar is offered several times. Select the time that works best for you.

Hi.thank you for usefull site.i can not download modified digital image correlation matlab Mfile.pleas send this Mfile to my email address rasool.azari1983@yahoo.com.can you help me?

Introduction and Live Demo: 3D Image Visualisation, Analysis and Model Generation with Simpleware

Date: Wednesday, May 11, 2016

Time: 9:00 am - 12:00 pm

Location: Swiss Federal Institute of Technology Zurich (ETH), Building ETZ, Gloriastrasse 35, Zurich, Switzerland

Who should attend

Dear Subscribers 

I am a new abacus user and I am trying to simulate the interaction between two

the surfaces of 2 different parts and materials. Does anybody knows how can I proceed 

in this simulation procedure. With pleasure any answer will be helpful from my work.

Thank you in advance

Normal
0

false
false
false

EN-US
X-NONE
AR-SA

There are a lot of sample UMAT subroutines for plane strain or 3D problems. However, it is difficult to find an example for the plane stress problem online. Even the UMAT manual does not provide enough information. I have tried the UMAT subroutine for the plane stress problem for a while. The following remarks may be useful for collegues who have interest.

1. The stress components σ11, σ22, σ12 should be returned to UMAT.  The other three stress components equal to zero, known as the basic assumption of the plane stress problem.

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? i use tie constraint But there isn't any stress for concrete! 
i use static,General for analysis! is it correct? 

I always use "Microsoft Visual Studio 11.0" and "Intel\Composer XE 2011 SP1" to apply all the user subroutines.

Recently, the university administrator updated the Visual Studio to 2105 (14.0) on my lab computer. 

When I tried to run an OLD simulation which WORKED perfectly before, it returned me the error message below:

Begin Linking Abaqus/Standard User Subroutines

   Creating library standardU.lib and object standardU.exp

This webinar is offered several times. Select the time that works best for you by registering here.

Dear Researchers 

I have attach a text file with this message in which I have written all my code. I have applied the Radial Basis Function (interpolation) to find approximated displacements.

f = RBF(r)*a

f = given values e-g displacements to be approximate

RBF(r)= Radal Basis function (Thin Plate spline)

a= Radial Basis Function coefficient

X= x distance from the origin (given) (first column of disppoints)

Y= y distance from the origin (given)(second column of disppoints) For example as below

X    Y    f(U)

1    5    4

Hello. 

I'm doing piezoelectric analysis using abaqus CAE v6.12.

Specifically, what I'm doing now is to make the bimorph piezoelectric harvester model using Abaqus CAE

and to validate my model.

My FE model is made based on the model developed by A Erturk and D J Inman in their paper,

'An experimentally validated bimorph cantilever model for piezoelectric energy harvesting from base excitations'

They presented the analytical solution for voltage output and experimental validation is also presented in this paper.

Looking to increase your productivity with the ScanIP software suite? Join this webinar to learn how to unlock the full potential of the software. Regardless of your engineering field, you will leave with new skills that will help you work faster and more efficiently in ScanIP.

Attend this webinar to learn some of the most effective tips and tricks used by the application engineers at Simpleware. A range of topics will be covered, including: