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Homogenization composite solid

Homogenization composite solid

Homogenization composite solid

(OP)
Hello,

I was wondering whether someone here can help me figuring out how ABAQUS composes the material stiffness matrix for composite solid elements. I studied the available manuals without real success.
I am using a UMAT which calculates instantaneous Engineering constants for a single ply. Within one element I compose four plies in a [0,90]s layup.


Basically I got the following questions:
  1. How does ABAQUS homogenizs a composite solid element which contains more than one ply
  2. Is there any method available in ABAQUS to get an output of the instantaneous material stiffness matrix D_ijkl (similar to *element matrix output?)
Thanks in advance for any feedback.

Erik

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