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FEAP UEL - Infinite Displacements?

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Hi all,
I am stuck with a problem while starting to learn programming UEL in FEAP.

FEAP - user element subroutines

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Hi all,

my question is about the history data storage in FEAP.

I am writing element subroutine (elmt01) in FEAP 8.3  for a history dependent problem (crystal plasticity).

FEAP - history variables for Elements

Hi all,

my question is about the history data storage in FEAP.

I am writing element subroutine (elmt01) in FEAP 8.3  for a history dependent problem.

I have written the stiffness matrix subroutine (stiff01), but it needs the data from the previous solution steps (previous strains, stresses, plastic strains, dislocation densities .... nh1,nh2=30 per point).

FEAP umat routines

Hi all,

I am using FEAP 8.2 in my university, and have to write a user material routine, but there is no clear guideline/example about which files to modify for this purpose. Sorry to say, the programmer's manual is very short, and very little detail is there.

How to perform sequential thermo mechanical analysis using FEAP

Dear members,

I am a newbie in FEAP and I would like to perform transient heat transfer analysis followed by a series of static analysis using FEAP.  Where does FEAP save the temperature history from the transient analysis and how to use this as input for the static analysis? I am using user constitutive model and most of the material parameters are temperature dependent. Which file do I need to include?

Best regads,

Vivian Tini

 

Numerical phase modeling of BTO nanostructure using Landis' model with FEAP

  The difference to the common model used is the f,g terms. The 3D FEM formulation has been derived and a new fortran program is written. The derivative matrix is symmetric. But the calculation result does not converge. I have tried every means to get a converging result. But it doesn't work, the residual norm always increases.

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