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Abaqus UEL subroutine help

Submitted by Ghandi_R on
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Computational Mechanics Forum
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ABAQUS
UEL subroutine
input file

Greetings to all Imechanicans ! ,

I just started using the scripting interface in Abaqus, and i stumbled into a small issue, I have a sample input file which is a small model for crack simulation and its UEL subroutine, I know how to open the input file  but I don't know how to open the UEL subroutine that goes with it, I get the following error :

The model "projGH" has been created.

Quasi Linear Viscoelasticity vs. Linear Viscoelasticity

Submitted by Gungho on
research
hyperelasticity
viscoelasticity
qlv
linear viscoelasticity

Can anyone explain what is main difference between Linear Viscoelasticity vs qlv (Quasi linear Viscoelasticity) proposed by Fung.  As far as I understand stress relaxation function and elastic response functions separated and given in convolution form which provides "strain rate independent" results in qlv application.  



Is linear viscoelastic description is strain dependent?



Hashin damage model for fiber reinforced composite in ABAQUS

Submitted by Gyanender Singh on
research
ABAQUS
composite
hashin

Hi Everyone,

I am doing a project in which I am trying to study about the
drilling of composite. The aim is to optimize the drill and process
parameters to minimize the damage. For this I have tried to simulate
the drilling process in ABAQUS and I am using the Hashin damage model.
The problem is that Hashin damage model works only for the lamina which
takes only plane stress elements. Since only plane elements are allowed
I am unable to simulate cutting action of drill as the composite plate
is effectively 2D.

TRANSIENT TEMPERATURE ANALYSIS IN ABAQUS...

Submitted by janakid on
research

Hello freinds

I am facing problems with ABAQUS in doing the transient temperature analysis,and creep analaysis,,

can any one sujjest me about the porcedure step by step in ABAQUS for solving the heat trasfer problems and creep anlyisis rpoblems..

it willl be help ful for me ..please............

and one more question how can i fine online tutorials for ABAQUS 6.1.6

please guide me by sujjestting the solutons for aboove problems..

i am struck with these problems cant able to continue my research...please consider me..

ABAQUS FEA Simulation for Beam on Elastic Foundation

Submitted by henryjamesusa on
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ABAQUS FEA Simulation for Beam on Elastic Foundation
Hi all friends:

   I am recently encounter a problem concerning defining beam on elastic foundation model in ABAQUS.

   Could someone please give me some instructions to set up that model or give me some hints about that?

   Appreciate.

Regards.

Henry.

Experimental analysis of prepreg tack

Submitted by LECAM on
research
Composites
tack
tackiness
prepreg
probe tack test

Dear all, I post a study dealing with tack of prepreg materials. This kind of composite materials is increasingly used in the design of structural parts, particularly in the aerospace industry.Tack is one of the major properties that governs the ability of prepreg to be laid up. To investigate this property, we have developed a probe tack test to evaluate the effect of the temperature, the contact time, the contact force and the debonding rate on it.

How to explain the limit load by stiffness matrix using finite element analysis?

Submitted by pfliu@zju.edu.cn on
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convergence stiffness matrix finite element analysis

I always have a question about the convergence problem: when a structure reaches its maximum load-bearing ability, the solution will end if the newton method is used in the finite element analysis. Then which form the stiffness stiffness in the finite element analysis takes on?  Singular or ill-conditioning?  How to explain the appearance of maximum load by variable stiffness matrix?

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