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Relative Displacements

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Statiker57

Statiker57

Aerospace
Joined
Mar 23, 2017
Messages
7
Location
GB
I'm trying to find the displacements of the centre of an access cover relative to the fixings around it's edge. The access cover is modelled on a FEM of the full wingbox but my problem is the deflection caused by global wing bending 'swamp' the local deflections on the access panel. How can I remove these global wing bending effects so I can find the local deflections on the access panel caused by the applied air pressures, thermal and wing bending strains?
 
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I think you can set up a local coordinate system on the access cover, one that moves with the cover.

another day in paradise, or is paradise one day closer ?
 
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Um, just compare the deflection of the center of the panel to the average deflection of all of the nodes around the edge of the panel.
 
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Why you want to separate it, it is integral part of the wing, and since you have it FEM-ed you have the picture for stress and strain?
 
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i'm guessing he wants to know the deflections around the perimeter of the access panel, maybe to design the seal ?

another day in paradise, or is paradise one day closer ?
 
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