Marcinowski, Jakub ; Sadowski, Mirosław
Contributor: Title: Group publication title: Subject and Keywords:bar buckling ; critical force ; Southwell method ; nonlinear material ; analytical methods ; numerical methods
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. ; 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.
Description:tytuł dodatkowy: Prace z Inżynierii Lądowej i Środowiska
Publisher:Zielona Góra: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
Date: Resource Type: Format: DOI: Pages: Source:Civil and Environmental Engineering Reports (CEER), no 34, vol. 4
Language: License: License CC BY 4.0: Rights: