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Tehnika
2014, vol. 69, br. 6, str. 969-976
jezik rada: srpski
vrsta rada: pregledni članak
doi:10.5937/tehnika1406969K


Modeliranje udarnih oštećenja u laminiranim kompozitnim strukturama
aOsnovna škola 'Jovan S. Popović', Beograd
bUniverzitet u Beogradu, Mašinski fakultet

Sažetak

Kompozitni laminati imaju značajnu primenu u savremenim inženjerskim strukturama. Oni se odlikuju izvanrednim osobinama, kao što su: visoka čvrstoća i krutost i mala masa. Bez obzira na to, ozbiljna prepreka mnogo široj upotrebi tih materijala je njihova osetljivost na udarna opterećenja. Udari uzrokuju inicijaciju i razvoj određenih tipova oštećenja. Otkazi koji nastaju u laminatnim kompozitnim strukturama mogu biti intralaminarni i interlaminarni. Do danas su razvijeni brojni simulacioni modeli za analizu udarnih oštećenja u laminatima. Takvi modeli mogu zameniti realne i skupe eksperimente na strukturama sa izvesnom tačnošću. Korišćenjem specijalizovanih softverskih paketa mogu biti određeni parametri i raspodela oštećenja (pri određenim uslovima) u laminiranim strukturama. Sa izvođenjem numeričke simulacije udara u kompozitne laminate dobijaju se odgovarajući rezultati, validni za analizu tih struktura.

Ključne reči

udari; oštećenja; laminatne kompozitne strukture

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