Coupling Elmer and DDD

Numerical methods and mathematical models of Elmer
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Javier
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Coupling Elmer and DDD

Post by Javier »

Hi Guys,

I am currently trying to couple Elmer with a Discrete dislocation dynamic software.

It will imply the transfer of information (surface nodes coordinates, displacement fields and stresses) form one code to the other. I have checked in the manuals of Elmer and found some options to write a user defined function/subroutine that may be the key to solve my problems but actually I don't know how to proceed in the case of getting and writing the variables I need.

There is any way that I can get/set at each time step nodal information like stress and displacements fields using Elmer's linear elastics Solver?

I have seen some examples of getting temperature at the nodes but not the stress.

I will appreciate any advice/help from you on how to proceed in this case and hope to not take much of your time.


With my best regards,

Javier
kevinarden
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Re: Coupling Elmer and DDD

Post by kevinarden »

I believe Displacement is
Displacement 1, Displacement 2, Displacement 3
Principal Strain is
Principal Strain 1, etc.
Principal Stress 1, etc.
I think normal stress is;
Stress 1, Stress 2, Stress 3

See Part IX of Elmers Model Manual
Javier
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Re: Coupling Elmer and DDD

Post by Javier »

Hi Kevinarden,

I will try your suggestions....

Thanks for the answer :)
raback
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Re: Coupling Elmer and DDD

Post by raback »

Hi, you typically need to request "calculate stresses". Then you may operate with the stress as any other field variable. -Peter
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