04-21-2015 03:54 AM
Hey Guys,
I am using NX-Laminate and Optimization to determine the optimum Laminate stacking of a part.
I know the 0°-Orientation (1-Orientation = Direction of Fiber) is equal to the material orientation set in the Mesh Associate Data.
I guess the 3-Orientation (Thickness-Direction of Laminate) is equal to the Shell-Element-Normal.
But how do I know which way the 2-Direction (90°-Direction = orthogonal to fiber) lies?
Maybe its a stupid question, but I just cant get my head around which way my negative and positive ply angles go.
Does the work COS matter or can i make a right-hand COS out of the 1- and 3-Axis?
kind regards
Sam
Solved! Go to Solution.
04-21-2015 10:39 AM
You are correct. The 3 direction is the element normal, implied from the element connectivity. The 1 direction is the angle from the element first edge (if using THETA) or the projection of the MCID X axis onto the element face.
The 2 direction is given by the cross product of 3 and 1 (right hand rule)