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How to code AMATRX for steady state fully coupled thermomechanical abaqus UEL?

Abaqus UEL

How to code AMATRX for steady state fully coupled thermomechanical abaqus UEL?

by  npbauskar  Posted    (Edited  )
Hi All
I am new to abaqus UEL.
I want to write for simple steady state problem a Abaqus UEL mimicking full coupled thermomechanical science.
If I print LFLAGS(3) it is coming 4.
Abaqus suggest that AMATRX will be mass matrix.
But formulation of coupled analysis contains stiffness matrix with components Kuu,Kut,Ktu,Ktt.
Please help me with this.
Thanks in advance
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