Ispitivanje vršeno savijanjem napredne generacije kompozitnih struktura sa specifičnim svojstvima izloženih različitim opterećenjima

  • Ahmed Zitouni Univerzitet u Tisemsiltu, Odsek za nauku i tehnologiju, Laboratorija za mašinske materijale i konstrukcije, Tisemsilt, Narodna Demokratska Republika Alžir https://orcid.org/0000-0003-1627-6020
  • Bachir Bouderba Univerzitet u Tisemsiltu, Odsek za nauku i tehnologiju, Laboratorija za mašinske materijale i konstrukcije, Tisemsilt, Narodna Demokratska Republika Alžir https://orcid.org/0000-0003-4668-122X
  • Abdelkader Dellal Univerzitet u Tisemsiltu, Odsek za nauku i tehnologiju, Tisemsilt, Narodna Demokratska Republika Alžir https://orcid.org/0009-0003-2305-4845
  • Hamza Madjid Berrabah Univerzitet u Relizanu, Odsek za građevinarstvo, Laboratorija za mašinske materijale i konstrukcije, Relizane, Narodna Demokratska Republika Alžir https://orcid.org/0000-0002-7871-4017
DOI: https://doi.org/10.5937/vojtehg72-47852
Ključne reči: funkcionalno gradirani materijali, savijanje, teorije smicanja višeg reda, termomehanički

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. 

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Objavljeno
2024/03/05
Broj časopisa
Vol. 72 Br. 1 (2024): januar-mart
Rubrika
Originalni naučni radovi

Sva prava zadržana (c) 2024 Ahmed Zitouni, Bachir Bouderba, Abdelkader Dellal, Hamza Madjid Berrabah

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