KARIŞIK SINIR KOŞULLARI ALTINDA FONKSİYONEL DERECELİ SİLİNDİRİK KABUKLARIN TİTREŞİM ANALİZİ

Sunulan çalışmada, fonksiyonel derecelendirilmiş silindirik kabukların (FDSK’ların) titreşim problemi klasik kabuk teorisi (KKT) kullanılarak çözülmektedir. Fonksiyonel dereceli malzemelerin (FDM’lerin) modelleri oluşturulduktan sonra gerilme-deformasyon arasındaki temel bağıntılar oluşturulmakta ve bu bağıntılar kullanılarak KKT kapsamında hareket ve deformasyon uygunluk denklemleri türetilmektedir. KKT kapsamında, karışık sınır koşulları için kısmi türevli diferansiyel denklemler Galerkin yöntemi uygulanarak çözüldükten sonra frekans için analitik formül elde edilmektedir. Elde edilen ifade dalga sayılarına göre minimize edilerek, frekansın minimum değeri bulunmaktadır. Elde edilen sayısal sonuçlar literatürdeki mevcut sonuçlarla mukayese edilerek doğruluğu teyit edilmektedir. FDM'lerin kritik parametreler üzerindeki etkilerini görmek için farklı profiller için yeni ve özgün sayısal örnekler sunulmaktadır.

Anahtar Kelimeler:

FDM’ler, silindirik kabuk, serbest titreşim, karışık sınır koşulları, frekanslar

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