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CAD modeling of composite structure with FEA "friendliness" in mind

CAD modeling of composite structure with FEA "friendliness" in mind

CAD modeling of composite structure with FEA "friendliness" in mind

(OP)
Hi,
 I'm new to FEA so I'd like to ask for advice. When modeling a composite structure in CAD (SolidWorks but I'm sure that idea is same for all major CAD systems) what is the best approach to do it with FEA friendliness in mind
 It will be an assembly consisting carbon/epoxy/honeycomb core monococue with alu bulkheads and potted hardpoints. Tubular subframes and various brackets bolted to composite structure. Monocoque may have non uniform lay-up i.e. additional ply's or C/F tape in critical areas, lap joints etc.
 
 Thank you very much for your help.
 
 Adrian

 PS: I understand that it may depend on FEA software requirements. In fact I didn't settle on what exactly will be used. I'll have to decide on best combination of pre/postprocessor + solver but this is a subject for separate topic.

RE: CAD modeling of composite structure with FEA "friendliness" in mind

(OP)
I understand that I should model(CAD) my composite part as surfaces (thanks to Fkmeyers). What is the best way - outer surface (i.e. femail mold inner surface) or mid surface - all this for Patran/MSC.Nastran?

 Thank you
 

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