Wydział Mechaniczny / Faculty of Mechanical Engineering / W1

Stały URI zbioruhttp://hdl.handle.net/11652/1

Przeglądaj

Filtry

2004 - 20092

Ustawienia

Autorsearch.filters.applied.operator.equals: search.filters.author.Świniarski, JacekTematsearch.filters.applied.operator.equals: search.filters.subject.stateczność

Wyniki wyszukiwania

Teraz wyświetlane 1 - 2 z 2
  • Pozycja
    Effect of changes in the thickness of a perforated plate of the heat exchanger on its structural stability.
    (Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej, 2004) Chudzik, Agnieszka; Świniarski, Jacek
    One of the most important elements of heat exchangers are perforated bottoms. These are perforated plates of significant thickness, in which heating cartridge pipes are mounted. For the designers of heat exchangers, the strength analusis of the connection between the elements, which allows for the determination of the state of stress and calculation of displacements of the perforated bottom after fixing the pipes in it, is of special importance. It results from carried out computations that the maximum reduced stresses in the perforated bottom are significantly lower than the values of admissible stresses. In this paper, computations of stresses and strains for various thicknesses of the perforated bottom have been presented. As a results of a decrease in the thickness of the perforated bottom, its deflectionincrease, and thus the heating system pipes are more exposed to strains and losses of stability.
  • Pozycja
    Stability and load carrying capacity of multi-cell thin-walled columns of rectangular cross-sections
    (Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej, 2009) Królak, Marian; Kowal-Michalska, Katarzyna; Mania, Radosław J.; Świniarski, Jacek
    The paper concerns theoretical, numerical and experimental analysis of the stability and ultimate load of multi-cell thin-walled columns of rectangular and square cross-sections subjected to axial compression (uniform shortening of the column). The theoretical analysis deals with the local and global stability of multi-cell orthotropic columns of a rectangular profile with rectangular cells. It has been shown that for a multi-cell column made of the same material and having the same cross-section area, the value of local buckling stress of the column walls grows rapidly with an increase of the cell number. The experiment conducted for isotropic columns has also proved a significant growth of the ultimate load with the increase of the cell number. The paper gives some conclusions which can be useful in design of thin-walled box columns.