Wydział Mechaniczny / Faculty of Mechanical Engineering / W1

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

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Filtry

2006 - 200912010 - 20111

Ustawienia

Autorsearch.filters.applied.operator.equals: search.filters.author.Kubiak, TomaszTematsearch.filters.applied.operator.equals: search.filters.subject.thin-walled structures

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Teraz wyświetlane 1 - 2 z 2
  • Pozycja
    Local Dynamic Buckling of C-Shape Profile Subjected to Bending
    (Wydawnictwo Politechniki Łódzkiej ; Katedra Dynamiki Maszyn - Wydział Mechaniczny Politechniki Łódzkiej, 2011) Urbaniak, Mariusz; Kubiak, Tomasz
    This paper deals with local dynamic buckling of thin-walled girder segments (short beam-columns) subjected to bending. Various shapes of pulse loading (triangle, trapezoid and rectangle) with a duration corresponding to the fundamental period of vibration were taken into account. Assumed boundary conditions correspond to a simple support, this agrees with conditions that exist in the place of the diaphragm in a long spar. The problem was solved by finite element method. In order to determine the critical load pulse amplitudes Volmir, Budiansky-Hutchinson, Ari-Gur and Simonetta criteria were employed.
  • Pozycja
    Interactive buckling in thin-walled beam-columns with widthwise varying orthotropy.
    (Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej, 2006) Kubiak, Tomasz
    An analysis of local buckling of thin-walled beam-columns, taking account global precritical bending within the first order approximation, is presented in the paper. The problem of interactive buckling of the structure is solved by means of Byskov and Hutchinson's (1977) or Koiter's (1976) approximation theory. Beam-columns made from orthotropic plates with the main directions of orthotropy parallel to the wall edges characterised by a widthwise varying orthotropy coefficient ni=Eyi/Exi are investigated. Beam-columns with open sections (i.e. channel sections), simply supported on the loaded edges, are analysed. The girders are subjected to loads which cause a uniform or linearly variable shortening of the edges.