Wydział Mechaniczny / Faculty of Mechanical Engineering / W1
Stały URI zbioruhttp://hdl.handle.net/11652/1
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Pozycja Elasto-plastic behaviour and load-capacity of multi-layered plated structures(Lodz University of Technology Press, 2016) Grądzki, Ryszard; Kotełko, Maria; Mania, Radosław, J.This chapter is a review of research realized in last decade mainly in collaboration with the late Professor Katarzyna Kowal-Michalska in the domain of elasto-plastic behaviour and ultimate strength of multi-layered plated structures.Pozycja Influence of initial imperfections on the collapse behaviour of box-columns(Wydawnictwo Politechniki Łódzkiej, 1997) Grądzki, RyszardIn this work the analysis of the post-buckling state in the elasto-plastic range of a box-colunm subjected to uniform compression in the elasto-plastic range is preseoted. The problem is investigated using Rayleigh-Ritz variational method. The stress-strains relations in the plastic range are determined on the basis of the flow theory of plasticity. The proposed method is a combination of analytical and numerical solutions. Different materiał stress-strain curves and initial imperfections such: out-of-flatness and residual stresses are taken into account. The load-shortening curves for column of different geometrical parameters and material properties are shown in diagrams.