On bifurcation load of a three-member slender system with internal crack subjected to Euler’s load

The results of numerical simulations presented in this paper are concerned with instability
of a three member slender system subjected to Euler load. The investigated column is built
up as a flat frame composed of three rods. In the internal one, the defect is present in form
of a crack. The boundary problem has been formulated on the basis of a static criterion of
instability. The boundary conditions associated with different types of supports are obtained
by proper selection of parameters of the generalized load. On the basis of these results, the
magnitude of bifurcation load can be determined.