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surot's picture

Abaqus - Please help!

Hello,

I am a bit confused about a simulation of brittle cracking presented in "ABAQUS EXAMPLE MANUAL" 1.1.5 Collapse of a concrete slab. I was trying to re-simulate the example on my PC and I got really weird results force (RF3) vs. time read in the support point.

Please have a look at attached picture. I download the file mnneice_5.inp from Example 1.1.5 calculated and got totally different resuls. Does it have something to do with setting of my Abaqus software?

Can somebody do the same and check this out?

 Thank you very much for any help!

Taxonomy upgrade extras: 

Submitting number of job at once in Abaqus

To solve several consecutive run automatically by abaqus can get help from the following program:

http://mmd110.persiangig.com/Abaqus/abqscript.bat

First file in the file path. Inp place available.

Then run the file name. Inp file and cpu, and the amount of RAM required by the MB session.

Inp file name (without extension and tandem) and enter them below, separated by a space.

Note: Before entering the first name inp file, insert a space.

How to analyse a microstructure using ABACUS

hi can anyone know how to analyse a microstructure in ABACUS,what are all the preprocessing steps we have to do before solving in abacus like (how to convert into cad model,meshing etc)

SIMULIA's picture

Dassault Systèmes welcomes Safe Technology!

We're very pleased to announce that Dassault Systèmes has acquired Safe Technology, Ltd., the developer of the fe-safe durability simulation application suite.

Even if you haven’t used their products, you’ve probably heard the name – Safe Technology
has been a partner of ours for over 15 years, providing a fatigue
solution to Abaqus users through fe-safe. As an add-on to Abaqus/CAE,
fe-safe uses proven techniques to accurately determine the fatigue life
of metal components under complex cyclic loading. fe-safe combines

SIMULIA's picture

Dassault Systèmes welcomes Safe Technology!

We're very pleased to announce that Dassault Systèmes has acquired Safe Technology, Ltd., the developer of the fe-safe durability simulation application suite.

Even if you haven’t used their products, you’ve probably heard the name – Safe Technology
has been a partner of ours for over 15 years, providing a fatigue
solution to Abaqus users through fe-safe. As an add-on to Abaqus/CAE,
fe-safe uses proven techniques to accurately determine the fatigue life
of metal components under complex cyclic loading. fe-safe combines

Heat transfer solver?

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Dear colleagues,

I would like to ask you about heat transfer solvers, but first i have to descirbe my problem:

I would like to solve some small case: a simply supported beam (or any other structure), exposed to uniformly distributed load (or any other type of loads) and fire conditions (i.e. heat transfer: steady-state/transient, linear/nonlinear) = complex analisys of such case - structural cases.

And now question:

Which solver with user-friendly interface or without could you recommend? What about free software?

Frictional rolling contact model CONTACT version 13.1 released

Dear all,

Herewith I want to announce the release of the frictional rolling contact model CONTACT version 13.1.

The main changes with respect to earlier versions of the program are as follows:

Jing_Yang's picture

Abaqus works well with fortran90????

I know this  question is a not new one and it has been posted before. But these posts seems not completely answer this question. I tested  for77 and for90 codes for isotropic elasticity respectively.

(ansys) why can't I get contact result if bulk material is defined by usermat?

Choose a channel featured in the header of iMechanica: 

hi everyone:

I  tried to perform a cohesive zone analyse in ANSYS, followed the turorial in HELP file. I used contact element to model cohesive zone. I found out that:

1, If I use standard material of ansys to define bulk element, like defined by 'mp,ex,1,2.1d5' or 'tb,biso', I can get a reasonable contact result;

2, If I use usermat file to define bulk element, 'tb,user', then the solusion also is done, but the resulte seems not correct, two part of model are not contact, some sections of them are coincide.

(ansys) why can't I get contact result if bulk material is defined by usermat?

I tried to perform a cohesive zone analyse in ANSYS, followed the turorial in HELP file. I used contact element to model cohesive zone. and I find out that:

1, if I use standard material of ansys to define bulk element, like defined by 'MP,EX,1,2.1e5   MP,PRXY,1,0.33 ' or 'tb,biso', I can get a reasonable contact result;

2, if I use usermat file to define bulk element, 'tb,user', then the solusion also is done, but the resulte seems not correct. two part of model not contact each other but  some sections of them are coincide.

Abaqus - prescribe surface radiation

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Dear all,

I have a problem assigning surface radiation to my model. Lets say the model consists out of two same size cubes. I want to simulate one cube sliding on top of the other. So lets say in the beginning the lower cube is covered 50 % by the upper cube and at the end it is covered 70% by the upper cube. Hence, at all times a part of the surface of the lower cube is free to the environment and another part is covered by the upper cube. However, due to the sliding process the free surface is changing in time.

Print/ view the stiffness matrix in nastran

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I have a model of a pressure vessel for which I need to see the stiffness matrix for selected elements. Is there any way of seeing the stiffness matrix only for selected elements in .f06 format of in . pch format in nastran

 Please help

Thanks in advance

Bharat 

Finite Difference Method Boundary conditions at corner

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I am implementing finite difference scheme for the simple 2D Laplace
equation. I am facing problem in imposing boundary conditions in 9-point
stencil. What boundary conditions should I give at the vertex i.e. at
the corner where two boundaries intersect.

e.g.- For square plate what should be boundary condition at four vertices?

What should be the boundary condition at vertices in Dirichlet problem?either homogeneous or non-homogeneous?

Please help in this regard. 

how to apply traction vectors on each node of the model?

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Dear All,

How to export NODAL DISPLACEMENT in a UAMP subroutine in ABAQUS?

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DEAR ALL,

    I am a new user in ABAQUS. I want to do an analysis on a cantilever beam, where force applied to the beam deforms it, and depending on its deformation the direction of the force changes.

In order to calculate the change in direction of the force I need DISPLACEMENT INFORMATION at two different set of nodes where forces are being applied. I am planning to use UAMP for

Abaqus time submission

Hi all!

I would like to submit a job at a defined time. I know we can do that on the CAE, but I prefere to use command lin, and my current model can't run on CAE. I checked on the help but I don't find how to submit an Abaqus job at a predefined time or to postpone a job of few minutes/hours, from command line.

Can you help me?

Thanks,

Laura

Twebb83's picture

Abaqus 6.13 - Live Webinar July 23

Abaqus 6.13 - Live Webinar! July 23, 9am EDT and 12 pm EDT. The latest release, Abaqus 6.13 delivers a number of powerful, customer-requested enhancements for modeling, meshing, visualization, contact, mechanics, and performance. These improvements enable customers to reduce development time and costs, while increasing the efficiency of the product development process through highly accurate simulations of real-world product and material behavior.

Crack Propagation in MSC PATRAN

Hello

How should i model crack propagation in MSC PATRAN with VCCT Modoule? is there any manual about that 

Neda.km's picture

Rotor dynamics

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Dear all, 

I am working on dynmaics and vibrational analysis of rotary equipments such as centrifugal pumps, Compressors and ...

Dispersion curve for Lamb waves using Abaqus

Dear all

I am trying to plot the dispersion curbve for wave propagation in an ALuminum beam under S0 and A0 lambwave.  My simulation has completed and I thin the results are reasonable as long as visualization is concerned.

I am trying to plot dispersion curve for these two waves using Abaqus outputs. As far as I know I need to use Abaqus outputs such as displacement or velocity for calculation of wave speed.

1- How would I calculate wave speed by Abaqus outputs and is this calculated wave speed the phase velocity or group velocity ?

selecting suface nodes in orphan mesh by python script????

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Hi,

    I have a 3D orphan mesh in abaqus and I need to select a group of nodes that belong to the orphan mesh and that would have been on a 3D surface of the parent solid before it was orphaned.

   I know how to do this in Abaqus/CAE, but I don't konw how to realize it using python scripts. If there is a method, just like using "findAt()" to select a surface by coordinates , to select all the nodes on a outer surface of the orphan mesh and to select all orphan elements?

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