Wydział Mechaniczny / Faculty of Mechanical Engineering / W1

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Stateczność dwukierunkowo pofałdowanych środników kształtowników zimnogiętych.
(Wydział Mechaniczny. Katedra Wytrzymałości Materiałów i Konstrukcji. Politechnika Łódzka, 2015) Perliński, W.; Michalak, B.
On stability of thin periodically, densely stiffened cylindrical shells.
(Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej, 2005) Tomczyk, Barbara
The aim of this contribution is to propose a new averaged nonasymptotic model of stationary stability problems for thin linear-elastic cylindrical shells reinforced by stiffeners which are periodically, densely spaced along one direction tangent to the shell midsurface. As a tool of modelling we shall apply the tolerance averaging technique. The resulting equations have constant coefficients in the periodicity direction. Moreover, in contrast with models obtained by the asymptotic homogenization technique, the proposed one makes it possible to describe the effect of the periodicity cell size on the global shell stability (a length-scale effect). It will be shown that this effect plays an important role in the shell stability analysis and cannot be neglected.