Numerical and experimental studies of compressed composite columns with complex open cross-sections

Local buckling of composite channel columns

“…Recent advances in buckling and post-buckling behaviour of composite plates and shells structures subjected to static and dynamic loads [16,17,20,27] and [19] lead to extended applications in engineering. Theoretical and numerical studies of stability problems are verified experimentally too [1,6,7,25,28]. Nowadays, the software based on finite element method (FEM) or semi-analytical method (SAM) [7,17] and [5] is applied to solve a variety of stability problems.…”

“…Theoretical and numerical studies of stability problems are verified experimentally too [1,6,7,25,28]. Nowadays, the software based on finite element method (FEM) or semi-analytical method (SAM) [7,17] and [5] is applied to solve a variety of stability problems. Nevertheless, in initial structural design, sensitivity analysis or optimal design analytical closed-form solution of specific problems is convenient.…”

Experimental and Numerical Study of the Buckling of Composite Profiles with Open Cross Section under Axial Compression

“…The problem of stability of thin-walled structures under operational static loads was investigated for instance in [6][7][8][9][10][11][12][13][14], where the authors analyse the operation of thin-walled structures with complex open and closed cross sections. They offer a solution to the problem of non-linear stability of the investigated thin-walled structures using experimental and numerical methods [15][16][17][18][19][20].…”

“…They offer a solution to the problem of non-linear stability of the investigated thin-walled structures using experimental and numerical methods [15][16][17][18][19][20]. The investigations of critical and post-critical states as well as the damage of thin-walled composite columns are reported, for instance, in the works [6,7,14,15,[21][22][23][24][25][26][27][28], where the authors present different methods for describing the problem of nonlinear stability Fig. 1 Post-critical equilibrium paths of a plate without initial deflections and of a real structure and validate the developed numerical models in the experimental tests.…”

“…To this end it is necessary to use approximation methods which -based on the post-critical equilibrium paths of a real structure determined in the experiments -enable determination of the critical load. This problem was examined regarding structures made of isotropic materials, for instance, in the work [10,24], and with respect to composite structures in the works [5,7,27,28]. They do not offer, however, a complex procedure which would enable developing an unequivocal methodology for determining the experimental critical load.…”