# ABAQUS

## abaqus

Choose a channel featured in the header of iMechanica:
Free Tags:

dear all,

i wanted some codes used in ABAQUS to solve the dynamic problems:

1.Blunt and Hemispherical projectiles hitting the plates.

2.When the plate is perforated by the high velocity projectiles.

hope someone will help me.

regards,

-Sanjay

Hi,

I´m trying to simulate the contact between two gears. Each gear has 60 triangular tooth and all of them are in contact at the same time.
I have one external gear and one internal gear. The internal gear is driven by a torque applied at it center.
I know that I should fix the center of the gear but I don´t know how to do it with Abaqus. Ive started to use two weeks ago.`I´ve already done the tutorials and reading the Manual!.

Best wishes

Ezequiel

## Static Load in ABAQUS Explicit

Hello,

I have to do a simulation with two loads, a constant static load and a dynamic load that rapidly decreases. What is the best way to handle this? Should I create two steps one for the static load and one for the dynamic load and let the static load propagate, or should I just have one step where the static loas acts instantly and the dynamic follows an aplitude?

The problem with the two step idea is that when I create the static load as static, I cannot get the choice of Dynamic/Explicit on the creation of the next step.

Any ideas

## How to define the contact state if the corresponding cohesive element is under compression (ABAQUS)

Hi. I am currently using cohesive element traction-separation law for modeling interface element between FRP and concrete. Can any one tell me how to define the contact state if the corresponding cohesive element is under compression in ABAQUS?   Yes, it's said that there won't be any damage if pure compression is applied to cohesive element, but my questions is how to consist of assuming that friction occurs on the damaged part as there is no friction definition in cohesive traction-separation law.   Please add comments if you know something about this. Thanks for help ^_^

## ABAQUS - Problem concerning "concrete damaged plasticity" model

Free Tags:

Hi all,

I'm trying to solve a frame structure in ABAQUS. I'm using 3D beam elements (B31) so that shear and bending stresses may appear. This is ok for an elastic analysis, but I also want to perform a failure analysis of this frame. Therefore, I'm trying to use the "concrete damaged plasticity" material in ABAQUS.  But I've read in the manual I can't use B31 elements with this material.

Does anyone know how to combine the "concrete damaged plasticity" material in a 3D beam analysis? Any other suggestions?

## ABAQUS - Problem concerning "concrete damaged plasticity" model

Hi all,

I'm trying to solve a frame structure in ABAQUS. I'm using 3D beam elements (B31) so that shear and bending stresses may appear. This is ok for an elastic analysis, but I also want to perform a failure analysis of this frame. Therefore, I'm trying to use the "concrete damaged plasticity" material in ABAQUS.  But I've read in the manual I can't use B31 elements with this material.

Does anyone know how to combine the "concrete damaged plasticity" material in a 3D beam analysis? Any other suggestions?

## partition at Abaqus standard at input file

Dear Abaqus Users;

## Mohr-Coulomb Shell in Abaqus. Help!

Choose a channel featured in the header of iMechanica:
Free Tags:

Hi,

I am new to Abaqus and I am trying to use it to model some industrial shells. According to some preliminar studies, the material has a mohr-coulomb plastic behaviour. Thus, I wanted to use shell elements, with a mohr-coulomb plastic material, but it seems that it is not possible in Abaqus.

According to the theoretical manual and the user manual (18.3.3-6):

## For Geotechnics Abaqus Users!

Hello colleagues,

Iam trying to model load test on board pile. I have already a model which is working but not as I need. I think the interaction between pile and soil is not correctly defined. Has someone an experience with this issue.? How I should define the interaction between soil and pile?

Attached .inp file.

Regards

## Abaqus 6.9

Hi all,

Please could  anyone help me for this?

How to link Abaqus CAE with UMAT subroutine? When I run simulation, it announced that

"Error in job tensile: Problem during linking - Abaqus/Standard User Subroutines.   This error may be due to a mismatch in the Abaqus user subroutine arguments.   These arguments sometimes change from release to release, so user subroutines   used with a previous release of Abaqus may need to be adjusted.
Job tensile aborted due to errors."

## How to rectify an Element error in Abaqus?

when trying to submit a model for analysis i recieve an error as follows

1200 elements have missing property definitions. The elements have been identified in element set ErrElemMissingSection.
Error in job 4: Analysis Input File Processor exited with an error.
Job 4 aborted due to errors.

I have defined the material and then seeded it and defined the element before meshing it.I have also tried defining the element before defining the material and still get the same error.

## Problem of contact data in ABAQUS 6.8 version

Hi.

I have an issue related to recent change in ABAQUS new version.

I've recently found a problem related to cotact data in ABAQUS new version, 6.8. I use fil files, but I've heard from a Simulia engineer that data file also has the same problem (I have not checked it out yet.)

## ABAQUS question on multi-core processor.

Hi, all imechanicans,

I use ABAQUS 6.8-1 on REDHAT 64-bit which is recent version. My server has two quad-core processors. Even though I select 8 cpus to run the model I made, only two or three cpus are work, not 8 cpus. Why does it happen? Does anybody know about this?

My model is 2-D and has 1000 eight-node elements.

Thank you

## Modelling of load test on board pile by Abaqus

Hi all,
has someone experience with modelling soils in Abaqus? I am trying to model load test on board pile, some errors apear, like so many attempts made for this increment...too large fixed time, etc. I am pleased to share .inp file of analysis.

## how to show the stress in the thickness direction when you use the shell element with abaqus

hello,

•      i simulate some process using shell elment, i find the results have big difference between abaqus and lsdyna. the abaqus results always show the stress in the thickness direction is zero. but the lsdyna is not. i don't know why? if some one know that, please give me some suggestions. i heard that the abaqus can not show that stress component. if not, how can i do to calculate that and fill it into the results file (.fil file). thank you!

## Beginner with abaqus.. need help modelling an impact load

Hi,

Im really quite new to using abaqus and I am having trouble with my modelling.  Esentially it is quite an easy problem but my knowledge of the programme is limitted.  Basically all I want to model is an impact load on a wall but im not sure about the analysis steps.  Initially i have been using a static step with a concentrated load but I dont know how to model the dynamic response the wall should experience after the load has been applied.

If anyone can help with this I would appreciate it a lot.

## About the half-step residual tolerance in Abaqus

This days, I am working on the dynamics analysis using the Abaqus. the implicit dynamic integration method in abaqus is HHT-alpha. I found that a very strange parameter about the method is the half-step residual tolerance . I don't know the parameter is whether important or not and how to determine it.

thank you very much :)