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Varitional Methods

Can we derive governing differential equations for bukling of plate and/or shell using variational principles ?

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ramdas chennamsetti's picture

R. Chennamsetti, Scientist, R&D Engineers, India

I think it can be done. You may calculate the total potential energy (TPE = Strain energy - change in potential of external loads), then take the variation of that. You may try a beam first for simplicity.

- Ramdas.

Hi Chennamsetti,

 Beam would be a good starting point. But how do I relate the externally applied inplane load to the curvature of the beam. I was referring to Timoshenko's Theory of elastic stability.


Thanks

ramdas chennamsetti's picture

R. Chennamsetti, Scientist, R&D Engineers, India

These externally applied forces will have a change in potential (Force*distance). This term will appear in your TPE.

You may see thin plates topics in "Theory of Elastic Stability" - Timoshenko.

- Ramdas 

 

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