Critical Buckling Force Variation for Beams with Discontinuities
Journal Title: Analele Universitatii "Eftimie Murgu" Resita. Fascicula de Inginerie - Year 2015, Vol 22, Issue 2
Abstract
This paper introduces a method to evaluate the critical buckling force for beams with geometrical discontinuities. First the shape of the healthy deformed beam due to axial forces is analyzed, in order to predict the distribution of the strain energy in the first buckling mode. Afterwards, the critical buckling forces for the similar beams with discontinuities positioned at different locations are determined by means of the finite element method (FEM), in order to find a similarity between the critical force drop and the damage position. It was finally demonstrated that it is a correlation between these two features; in fact, the force decrease is proportional with the energy locally stored in the beam.
Authors and Affiliations
Horia Furdui, Andrea Amalia Minda, Gilbert Rainer Gillich, Florian Muntean
Keywords
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