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ANSYS VISCOELASTIC MODELING

Submitted by saurabh_2110 on
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viscoelasticity
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Hi,

 I am trying to model a sheet of Poly Vinyl Butryl (PVB), which is a viscoelastic material in ANSYS. I have all the regular properties like elastic, shear and bulk modulus, poisson ratio, denstiy and damping factor. I also have a stress- strain curve of PVB. With all this data, is it possible for me to find the various constants in the viscoelastic models using ANSYS?

 Thanks

Saurabh 

Foundation on soil - ABAQUS

Submitted by Ehsanizadi_civil on
software

Hi there,

 Recently I have modelled a 2D block of soil, at the first step of analysis the soil block subjected to a gravitational load (Gravity) and gravitational stresses generated in the soil block, at the second step, a little rectangular part of soil block removed and currently a concrete block with same size of removed soil embedded on the soil block. this concrete block to be subjected a surface loading.

Abaqus error: code 5

Submitted by Hardik.M.Singh on
software
VUMAT isotropic hardening

Hi all,

I am trying to run a VUMAT subroutine for isotropic hardeining, whenever I input the command "abaqus j=inp_name user=subroutine_name " the analysis begins, the ODB file is generated but in few secs the analysis exits with an error, and the error is..

Abaqus Error: The executable C:\ABAQUS\6.7-1\exec\explicit.exe

aborted with system error code 5.

It also says...

stepTime VS. totalTime

Submitted by mmoriche on
software
ABAQUS
User Subroutine
STEPTIME
TOTALTIME

Hello everyone,

 I have a problem with one user subroutine.

The fact is that, debugging the subroutine I see the totaltime different from the steptime. I am using just one step and the .inp implementation is veryfied with a different user subroutine, so totaltime and steptime should be exactly the same (but they are not...)

 

The value of the total time is around 1e-8 and the value of the steptime is around 1e-55.

 

Could anyone give me a clue?

 

Thanks in advance.

Question on Abaqus Mohr-Coulomb hardening definition

Submitted by chenglejin on
software
Abaqus Mohr-Coulomb hardening

Hi Expert,

 I'm a newer of Abaqus. I was trying to compute a simple compression problem using Mohr-Coulomb model. I found the slope of stress-strain curve from the results is double of that defined in the input file. I don't know what's cause it or my understand of the slope is wrong.

Only one 8 node C3D8 element is involved. To simplify the question, let the friction angle be 0, it reduces to a Tresca model actually. The material is defined as:

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