@misc{Marcinowski_Jakub_Application, author={Marcinowski, Jakub and Sadowski, Mirosław}, howpublished={online}, publisher={Zielona Góra: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego}, language={eng}, abstract={Experimental determination of the critical force of a compression bar made of linear material does not pose major problems. The widely used Southwell method is also applicable to bars with cross-sections varying in length. The purpose of the research undertaken was to demonstrate that this method can also be successfully applied to bars made of elastic materials exhibiting nonlinear [sigma]([epsilon]) characteristics.}, abstract={Using analytical relationships for a rod satisfying the assumptions of Euler-Bernoulli theory, F([delta]) relationships were derived for a rod with an initial arc imperfection, and Southwell diagrams were constructed on this basis. Nonlinear equilibrium paths F([delta]) were also determined numerically using the COSMOS/M program for this purpose. For the pre-assumed different nonlinear characteristics, full confirmation of the validity of the application of the Southwell method for determining the critical force was obtained.}, title={Application of the Southwell Method to Determine the Critical Load of Compression Rods Made of Nonlinear Materials}, type={artykuł}, keywords={bar buckling, critical force, Southwell method, nonlinear material, analytical methods, numerical methods}, }