Boundary conditions for buckling of column

AI Thread Summary
In the discussion on boundary conditions for buckling of columns, participants clarify the constraints for fixed-fixed and simply supported cases. For fixed-fixed conditions, both x and y displacements must be restrained, while for simply supported conditions, only y displacement is restrained. A key point of confusion arises regarding the application of loads to a fixed-fixed column while maintaining fixed ends. One participant suggests that only one end should be fixed in both x and y, allowing the other end to move and facilitate buckling. The conversation emphasizes the importance of correctly interpreting the boundary conditions when analyzing column behavior under load.
karthickaero1
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For fixed-fixed BC's, i have to arrest x and y displ. For simply supported case, i have to arrest y displ. Then my doubt is, while applying force at the end of the column, how the displacement will happen for fixed-fixed column.
 
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You want to fix both ends and then apply loads to them?
 
yeah...that's my doubt...
 
I don't see how you want to call the ends fixed and apply loads to them simulateously. Are you sure that is what is being asked of you?
 
Travis_King said:
I don't see how you want to call the ends fixed and apply loads to them simulateously. Are you sure that is what is being asked of you?

I read it as one end being fixed in both x and y, and the other only in y, thus free to move so as to allow buckling, like http://upload.wikimedia.org/wikipedia/commons/5/54/Buckled_column.png" Is that the problem you're describing, karthickaero1?
 
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Due to the constant never ending supply of "cool stuff" happening in Aerospace these days I'm creating this thread to consolidate posts every time something new comes along. Please feel free to add random information if its relevant. So to start things off here is the SpaceX Dragon launch coming up shortly, I'll be following up afterwards to see how it all goes. :smile: https://blogs.nasa.gov/spacex/
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