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ABAQUS/CAE

Deformation gradient change in Abaqus

Submitted by ratgem.shetty on
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FEM
ABAQUS/CAE
Numerical calculation

Help needed!! in Abaqus

I have UMAT written to update stress and material tangent components for a user defined material model. I need stretch ratio as an input for my material model. For this I am using deformation gradient from UMAT. Problem is, when there is constant strain (strain rate = 0), for example when material stretched to 100% strain (rubber) and then held at that strain for certain time to see stress relaxation, the deformation gradient should give the same value of 100% strain, but to my surprise this is changing. Can any one help me with this.   

Co-simulation Engine Mapping search failures in Abaqus

Submitted by ahsanhummayoun.uet on
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ABAQUS/CAE

can anyone guide me what is co-simulation engine mapping search failures in abaqus?? as i get this error while trying running co-simulation between AbaqusCFD and AbaqusStandard.



i have created CAE Model with single fin (mounted on tube) and tube as a single part and created partion wall along the edge of fin, Created CFD Model with fluid, assigned structured mesh.



Even file pre-processor completes successfully but it aborts showing "co-simulation engine mapping search failures in abaqus"



Measure Curved Edge length in ABAQUS CAE

Submitted by sidk1984 on
software
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.

Thanks,

siddhesh 

"keyword *CO-SIMULATIONREGION is misplaced" Error

Submitted by ahsanhummayoun.uet on
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abaqus cfd
co-simulation

i everyone,

I am UG student of Mechanical Engineering. I am a new user of Abaqus and currently working on co-simulation for my final year  project. Actually what I am doing is prediction of heat transfer due to fluid flow in a tube of known diameter across which air is flowing, also called as conjugate heat transfer.

I created model in Abaqus/standard named Tube, created part as Tube



Assigned material properties

Clamping with a specific stiffness in Abaqus

Submitted by schurik01 on
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stiffness
clamping

Hello,

is there a simple possibility to set a boundary condition to clamp my sheet in Abaqus with a specific stiffness?

Usually you use the "encastre"-boundary condition. But I would like to give this condition a specific stiffness.

Thanks a lot for your help in advance 

Optimization techniques to simulate clamped cornered plates and pinned nodes using ABAQUS?

Submitted by baijatnal on
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Can any help me know about how to optimize using ABAQUS? 

 

I am working on mode localization of composite plate, kindly help 

Basic problem in ABAQUS/CAE

Submitted by tanmoy.deb@iit… on
research
ABAQUS/CAE

I am simulating a cube of sides 10 units. I have applied the
load as pressure of 16 units at top. The cube is meshed by usign a
global seed size of 5. It means, there are 9 elements and 27 nodes
(using C3D8R). I have used the material property of steel for instance.
The base of the cube is fixed and the sides are allowed to move
vertically.  Now i want to calculate the nodal force at the centre of
the cube i.e. at the centroid of the cube (not in the centre of any of
the exterior sides). 

 

Abaqus:warning message,Tangent directions used to enforced contact constraints for contact pair

Submitted by Marko_carl on
ABAQUS/CAE

Well I tried to search for a related thread and could not find one, so creating a new
one. But if such a thread exists, please direct me there, thank you. I
am trying to define the contact between two gears and it worked
perfectly before without Substrcture. But I receive a warning when I use
usbstructures. I do not want go into much details because I do not want
to confuse anyone. I wish to have answer only for following question:

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