Kako citirati
Sažetak
Uvod/cilj: U radu je predstavljeno ispitivanje savijanjem napredne generacije kompozitnih struktura sa specifičnim svojstvima izloženih različitim opterećenjima.
Metode: Predlaže se i uvodi nova generalizovana teorija smicanja sa pet varijabli radi izračunavanja statičkog odgovora četvrtastih funkcionalno gradiranih keramičko-metalnih ploča. Teorija eliminiše potrebu za korišćenjem korektivnog faktora smicanja i obezbeđuje odsustvo uslova za deformaciju smicanjem i na gornjoj i na donjoj površini ploče. Uvodi se numeričko ispitivanje za tumačenje uticaja uslova opterećenja i varijacija snage funkcionalno gradiranog materijala, kao i koeficijenata modula, aspekta i debljine na ponašanje funkcionalno gradiranih ploča pri savijanju. Rezultati ovih analiza upoređeni su sa rezultatima dostupnim u literaturi.
Rezultati: Preliminarni rezultati obuhvataju komparativnu analizu sa standardnim teorijama smicanja višeg reda (PSDPT, ESDPT, SSDPT), kao i sa teorijama Mindlina ( FSDPT) i Kirhofa (CPT).
Zaključak: Zajedno sa već potvrđenim teorijama u ovoj oblasti, predstavljena teorija pruža doprinos uvidom u statički termomehanički odgovor funkcionalno gradiranih ploča. On obuhvata uticaj vrednosti eksponenta zapreminskog udela na nedimenzionalna pomeranja i napone, uticaj koeficijenata aspekta na defleksiju, kao i efekte termalnog polja na defleksiju i napone. Numerički primeri ispitivanja vršenog savijanjem napredne generacije kompozitnih struktura sa specifičnim svojstvima izloženih različitim opterećenjima potvrđuju tačnost predstavljene teorije.
Ključne reči
savijanje
teorije smicanja višeg reda
termomehanički
Reference
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