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Geotechnical Shear Strain

 

I'm trying to model a simple earthen embankment with the following properties: The same uniform soils in both foundation and embankment (entire model is 1 part). Mohr-coulomb model. Gravity loading only. I'm trying to determine the shear strain of the soil and I see there are many different strains available, but no shear strain. Any clarification on how to determine shear strain would be appreciated. Thanks,

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Posted by: magnerirish <kamvx8 <at> mst.edu>
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Re: Sam Helwany - Soil mechanics example problem.

 

Solution is that the files are "Read Only". Right click on the folder containing all the files and uncheck "Read Only". Hope this helps. --

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Posted by: magnerirish <kamvx8 <at> mst.edu>
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Reg. UMAT matrix DDSDDE

 

Hello,

I have question on UMAT, I hope someone can help me out here.

What is the matrix that is expected in DDSDDE ?

Is it the matrix form of the tensor L, that relates the Jaumann rate (TauJC) of Kirchoff Tau (with the current configuration taken as reference) to the rate of deformation tensor D by way of : 
TauJC_{ij} = L_{ijkl} D_{kl}

Or, 

Is it the matrix form of the tensor B, that relates the Jaumann rate (SigmaJC) of Cauchy tensor Sigma to the rate of deformation tensor D by way of : 
SigmaJC_{ij} = B_{ijkl} D_{kl}.

Note that the following relationship holds:
TauJC= SigmaJC + Sigma x Trace(D)

Looking at the abaqus documentation on UMAT, it looks like the 'C' matrix defined in abaqus corresponds to L, but looking at the requirement of DDSDDE =  \partial DeltaSigma/ \partial DeltaEpsilon, it seems like the matrix B. I am confused between which one to use for a general problem.

Thanks,
Sourish
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Posted by: Sourish Chakravarty <sc267 <at> buffalo.edu>
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model ductile damage in abaqus

 

Hi,    
I want to model ductile damage in abaqus so i need material parameters for steel st37 and st57. 

(epsilon T+,epsilon T-,K0)

 I would appreciate if you could help me.



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Posted by: miladkhatamirad <at> yahoo.com
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model ductile damage in abaqus

 

Hi, I want to model ductile damage in abaqus. I need material parameters for Steel 37 and 52 (Epsilon T+,Epsilon T-,k0I would appreciate if you could help me.


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Posted by: miladkhatamirad <at> yahoo.com
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How to input different temperature data to every different node?

 

Hello everyone, I am a student who is learning about bone remodeling simulation by Abaqus. I have to input every different growth rate (or temperature) for every different node of a spine model. But the model has such a complicated structure with too many nodes . I can not input every data to every node by hands. Could anyone tell me how to deal with this problem? Someone told me I should use Python. But I still do not know the details. Is there some easy way to deal with this problem like just interpolate different temperature from a file for every different node? Could anyone help me and tell me what should I do? Thank you so much! Sun --

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Posted by: sun <sun_han_cool <at> hotmail.com>
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determinate the Brinell or Rockwell hardness from ABAQUS.

 

Hi,
Please, How can I determinate the Brinell or Rockwell hardness from ABAQUS.
Thanks

 
==============================
Anis RAMI
Mechanical Engineering & PhD Student 
LGM Laboratory - National School of Engineers of Monastir (ENIM)
07. Ibn ALJAZZAR Street, 5000 Monastir, Tunisia
Cell: (+216) 50 602 607

============================== 

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Posted by: Anis Rami <anis.rami <at> yahoo.fr>
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Writing a plugin

 

Hello, I am interesting to write a plugins for abaqus to model a micromechanics for composite materials. I need help and examples. Thank you

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Posted by: aymenyounes432 <at> yahoo.com
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getsolex@yahoo.com [Abaqus] | 16 Dec 10:45 2014
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Error for Sequentially Coupled Thermal Stress Analysis

 

Hello,

I am doing sequentially coupled thermal stress analysis. I did the heat transfer analysis first followed by stress analysis. When I do the restart analysis I got the error message "A NODE SET WITH THE SAME NAME "ASSEMBLY_Rebar X-1_SET-1" DEFINED IN THE ORIGINAL ANALYSIS HAS BEEN REDEFINED IN THE CURRENT ANALYSIS. EXISTING SETS CANNOT BE MODIFIED IN A RESTART ANALYSIS." But the thing is I didn't define a new node set when I do the restart analysis. Could you guys please give suggestion on what actually went wrong?



Thank you for the help


Tola

 

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Posted by: getsolex <at> yahoo.com
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How to edit the mesh in abaqus CAE

 

Hi Everyone,
I have a mesh that is a rectangle divided into 5 element, how can I merge them into one quad element in abaqus CAE?
Thank you!
Eric
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Posted by: Qiang Fang <godblessfq <at> gmail.com>
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bob_dl6@yahoo.com [Abaqus] | 6 Dec 15:17 2014
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crack between different materials

 

Hello everyone
I wanna define crack between different materials and the abaqus warning is "Crack propagation direction can not be calculated for an interfacial crack between two dissimilar materials".
help me
Thanks


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Posted by: bob_dl6 <at> yahoo.com
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Gmane