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Midsurfacing of an Aircraft wing

Experimenter
Experimenter

How to extract the mid surface of the Aircraft wing(Attached below)?

I tried Geometry>Midsurface>Automatic but i couldn't do

Please find the attached file.

2 REPLIES

Re: Midsurfacing of Aircraft wing

Solution Partner Phenom Solution Partner Phenom
Solution Partner Phenom

Hello!,

The import of the IGES file in FEMAP results in a THICK solid part, you should understand that this geometry is not adequate to perform a midsurface extraction using command GEOMETRY > MIDSURFACE > AUTOMATIC, this command is useful only for generating surfaces from thin-walled solid geometry. The midsurfaces can then be used as the basis of plate meshes.

In any case, if the exterior surface of your 3-D solid wing is really the skin of the real wing, then you can always create a surface geometry using command GEOMETRY > MIDSURFACE > OFFSET TANGENT SURFACES, applying an offset value of half of the thickness of skin.

Best regards,
Blas.

 

Blas Molero Hidalgo, Ingeniero Industrial, Director
IBERISA • 48004 BILBAO (SPAIN)
WEB: http://www.iberisa.com
Blog Femap-NX Nastran: http://iberisa.wordpress.com/

Re: Midsurfacing of an Aircraft wing

Siemens Phenom Siemens Phenom
Siemens Phenom

I was thinking about this problem and came up with the following, a way to create a mid-surface shell mesh representing a solid wing -

 

(view in My Videos)

 

I ran a free-free modal run of this shell mesh -

WingMid1.jpg

And compared with a solid tetra mesh of the orignal geometry -

WingMid2.jpg

 

First mode bending is pretty close, so it appears the stiffness is satisfactory.

 

Mark.