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Gubanje tanke krožne plošče na elastičnem substratu : zaključna naloga Razvojno raziskovalnega programa I. stopnje StrojništvoRobek, AljažGubanje je pojav, ki je prisoten pri problemih stabilnosti. Čeprav nezaželen na makro skali, lahko zanj najdemo potencialno uporabo na mikro skali. Več modelov je bilo že razvitih za opis gubanja, ... vendar primanjkuje takih, ki bi podali enostave analitično rešljive zveze za določitev osnovnih značilnosti sistemov, kjer se gubanje lahko pojavi. Take zveze so možne le za primere z enostavno geometrijo in napetostno porazdelitvijo. Eno takšno konfiguracijo analiziramo v zaključni nalogi. Obravnavamo gubanje filma krožne oblike na substratu, ki je enakomerno obremenjen po robu. Razvit je matematičen model gubanja plošče, ki temelji na von Kármánovi teoriji znatnih premikov, s katerim nato preučimo mehansko stabilnost plošče na elastični podlagi. Izpeljana je splošna diferencialna enačba gubanja, iz katere je nato določena pogojna enačba stabilnosti plošče, ki jo uporabimo za izpeljavo izraza za določitev kritične napetosti. Napovedi in rezultate teorije nato primerjamo s simulacijami v programu Abaqus. Izvedemo več simulacij, pri katerih spreminjamo debelino plošče in njen elastični modul. Ugotovimo, da se rezultati med teoretično idealnim modelom in simulacijami nekoliko razlikujejo.Type of material - undergraduate thesis ; adult, seriousPublication and manufacture - Ljubljana : [A. Robek], 2019Language - slovenianCOBISS.SI-ID - 16946715
Author
Robek, Aljaž
Other authors
Brojan, Miha
Topics
diplomske naloge |
gubanje |
filmi |
substrati |
krožne plošče |
Winklerjeva podlaga |
wrinkling |
films |
substrates |
circular plates |
Winkler foundation

Library/institution |
City | Acronym | For loan | Other holdings |
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Faculty of Mechanical Engineering, Ljubljana | Ljubljana | FSLJ |
reading room 1 cop.
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Robek, Aljaž | ![]() |
Brojan, Miha | 24560 |
Source: Personal bibliographies
and: SICRIS
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