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eigenvalue buckling ansys , finding Stress

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umatrix

umatrix

Mechanical
Joined
Jul 18, 2013
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62
Location
US
Hello Eng Tips,
I have computed the eigenvalue buckling analysis in Ansys. I have obtained the load multiplier and the deflection. How do I get the stress associated with this loading?
Not the equivalent stress, but the bending stress associated with the buckling loading?

Thank you.

 
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Linear buckling analysis won’t give you real displacements or stresses. If you need their values, run nonlinear buckling simulation (as regular static analysis but with geometric nonlinearity).
 
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Also, be very careful if this is a shell structure, like a silo or similar. You will be grossly overestimating the capacity of such structures using an eigenvalue buckling.
 
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