Year 2016

• Buckling Analysis of Cold Formed Silo Column

  Publication

  • K. Rejowski
  • P. Iwicki

  - Mechanics and Mechanical Engineering - Year 2016

  The paper is devoted to stability analysis of different models of steel cold formed silo column. The steel cylindrical silos are often composed of corrugated walls and vertical open-sectional columns uniformly placed along the silo circumference. Both the whole 3D silo, a simplified model consisting of one column with a part of the silo walls, and a single column resting on elastic foundation provided by the silo walls were analyzed....

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Year 2013

• 3D Buckling Analysis of a Truss with Horizontal Braces

  Publication

  • P. Iwicki
  • M. Krajewski

  - Mechanics and Mechanical Engineering - Year 2013

  The present research is devoted to the study of out–of–plane buckling of a truss with horizontal braces. The truss is a model of real roof truss scaled by factor 1=4. A linear buckling and a non–linear analysis with geometric and material non–linearity were carried out. The truss buckling and limit load for different stiffnesses and number of braces are found. Numerical analysis are verified by experiment. Threshold bracing stiffness condition...

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• Elastic distortional buckling of thin-walled bars of closed quadratic cross-section

  Publication

  • M. Kujawa
  • C. K. Szymczak (formerly: C. Szymczak)

  - Mechanics and Mechanical Engineering - Year 2013

  In this study a tin-walled bar with closed quadratic cross-section is considered. The elastic stability of axially compressed bar related to the cross-section distortion is investigated. The governing differential equatio is derived with aid of the principle of stationary potential energy. The critical load for simply supported bar is found in an analytical form and it is copared with the FEM solution. Sufficient accuracy of the...

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Year 2011

• Experimental Validation of Numerical Model within a Flow Configuration of the Model Kaplan Turbine

  Publication

  • Z. Krzemianowski
  • M. Banaszek
  • K. Tesch

  - Mechanics and Mechanical Engineering - Year 2011

  This paper investigates validation of flow within a model Kaplan turbine. This includes comparison of various turbulence models and their influence on torque and power generated by the turbine. Numerical results were compared with experimental data.

• Multistage Coupling of Eight Mistuned Bladed Discs on Solid Shaft with 1% Mistuning

  Publication

  • A. Maurin
  • R. Rządkowski

  - Mechanics and Mechanical Engineering - Year 2011

Year 2010

• Buckling of frame braced by linear elastic springs

  Publication

  • P. Iwicki

  - Mechanics and Mechanical Engineering - Year 2010

  In the design codes and specifications, simplifed formulae or diagrams are given for determining the buckling lengths of frame columns based on the ruling criterion of considering frames as sway or non sway. Due to the fact that, the code formulae utilize onlylocal stifness distributions, these formulae may yield in certain cases rather erroneous results. In most code formulas a case of weakly braced frames is usually not considered.In...

Year 2002

• Doświadczalne badania wytrzymałości zmęczeniowej stopów łożyskowych

  Publication

  • J. Sikora

  - Mechanics and Mechanical Engineering - Year 2002

  W pracy przedstawiono wyniki badań nad wytrzymałością zmęczeniową warstw ślizgowych wykonanych z wybranych materiałów stosowanych w cienkościennych panwiach łożyskowych współczesnych maszyn. Badania przeprowadzono za pomocą urządzeń badawczych skonstruowanych i zbudowanych w Politechnice Gdańskiej. Przedstawiono zaobserwowane pęknięcia zmęczeniowe badanych próbek oraz oszacowano odpowiadające im krytyczne wartości naprężeń w warstwach...

• Procedura kontrolowanego wywrócenia żurawia stoczniowego

  Publication

  • R. Kościelny

  - Mechanics and Mechanical Engineering - Year 2002

  Przedstawiono procedurę złomowania żurawia stoczniowego, wyposażeniowego. Procedurę tę przeprowadzono w przypadku żurawia uszkodzonego w wyniku katastrofy suwnicy bramowej. Może być również stosowana w przypadkach planowego złomowania wielkich dźwignic.