Abstract:

This tutorial illustrates design situations where elastic buckling of slender columns and thin plates under compressive loads can result in large deformations and eventual failure of the structure.  This is a classic example of an overstress failure mechanism, and analytic methods, based on continuum mechanics principles, are presented to design against such failures.  Examples illustrate the use of these models in practical in practical design situations in mechanical engineering and electronic packaging applications.  Materials nonlinearities and geometric nonlinearities due to initial imperfections can reduce the critical buckling stress, and generally require numerical solutions.  The design equations are based on energy stability principles and can be implemented in an engineering design environment.  This is an overstress mechanical design failure mechanism.  Like excessive elastic deformations, this mechanism is not itself a material failure mechanism, but can eventually lead to overstress material failure due to large deformation.
 

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