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Honeycomb Isothermal analysis shows Thermal stress on Face sheets

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kishain

kishain

Aerospace
Joined
Sep 21, 2010
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Hi
I am modelling a honeycomb structure using solid elements with (MAT9)and specified appropriate values for G33 (Ezz), G55 (Gyz), and G66 (Gzx). The facesheets are modelled using shell with Mat 8 cards. The structure is having a Wedge shape and after doing a Iso thermal analysis I am getting some stress (~5MPa) in the shell elements. What could be the reason??

Manuy Thanks

KP
 
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