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composite orientation mesh with hypermesh and nastran

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Hi, i'm trying to mesh some CFRP ribs of an UAV wing (see figure). My last (and best) result is in the picture. Now i'm wondering how i can set hypermesh to use the principal reference system as reference for the ply orientation (i need some plys a 0° wrt to the x axis of my reference system and some other plys a 90°). In other words, i'm quite sure that with nastran u can specify that i need some fibers align with my x axis (of the global reference system) and some other fibers othogonal. I don't want to use the grid points reference system that nastran assumes by default  (since the orientation of the elements is very random - but it's the best i can do given that geometry).


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