3D Woven Composite Convert G31 to G13
3D Woven Composite Convert G31 to G13
(OP)
I have composite material properties for a 3D woven composite. We have all 3 E's, all 6 nu's they only have 3 G's specifically G12, G23 and G31. Abaqus requires G13 not G31. Is there a closed form solution to convert for this different convention?
Thank you for your help.
Rob
Thank you for your help.
Rob
Rob Stupplebeen
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RE: 3D Woven Composite Convert G31 to G13
You may be thinking of how the elastic modulii are related to the Poisson's ratio. See attached (orthotropic material in 3D) to ensure those relationships are correct. No such coupling exists for the shear modulii.
http://files.engineering.com/getfile.aspx?folder=3...
Brian
www.espcomposites.com
RE: 3D Woven Composite Convert G31 to G13
Thank you very much! I remembered that nu is dependent on the order and couldn't remember if G was as well. All I remembered was that nu was trickier. My friend's over at Abaqus pointed me to the same table in help files which may be useful to this group.
In the Abaqus Analysis User's Guide: Section 22.2.1 Linear Elastic Behavior: Defining orthotropic elasticity by specifying engineering constants.
Thank you again!
Rob
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