Dynamıc Analysıs Of Layered Composıte Beams Wıth Symmetrıc And Dıfferent Orıentatıon Angles

Yıl 2020, , 24 - 34, 31.12.2020

Mustafa Oğuz Nalbant , Ayla Tekin

https://doi.org/10.47118/somatbd.825928

Öz

In this study, the dynamic analysis of two-layer composite beams with symmetrıc and dıfferent orıentatıon angles was analyzed analytically and numerically. In the first part, the analytical solution of the layered beam with real dimensions has been made using the finite element method. In the analytical solution, the beam is accepted based on the Euler-Bernoulli beam theory. In the second part, Natural frequencies of two-layered which have various boundary conditions layered beams were obtained at different angles and length-thickness ratios using the MATLAB program language, which is a mathematical analysis program. Large amplitude vibrations are quite effective in laminated composite beams. For this reason, the frequencies were tabulated and interpreted for the first eight modes.

Anahtar Kelimeler

Finite Elements, Composite Material, Vibration, Dynamic Analysis, Natural Frequency

SİMETRİK VE FARKLI ORYANTASYON AÇILARINA SAHİP TABAKALI KOMPOZİT KİRİŞLERİN DİNAMİK ANALİZİ

Öz

Bu çalışmada, simetrik ve farklı oryantasyon açılarına sahip iki tabakalı kompozit kirişlerin dinamik analizi numerik olarak incelenmiştir. İlk kısımda gerçek boyutlara sahip tabakalı kirişin sonlu elemanlar metodu ile analitik çözümü yapılmıştır. Analitik çözümde kiriş Euler-Bernoulli kiriş teorisi kirişi kabul edilmiştir. İkinci kısımda ise sistem sönümsüz serbest titreşime maruz bırakılarak dinamik analizi yapılmıştır. Sistemin numerik analizi için matematik analiz programı olan MATLAB program dili kullanılmıştır. İki tabakalı çeşitli sınır şartlarına sahip kirişlerin; farklı açılarda ve uzunluk-kalınlık oranlarında doğal frekansları elde edilmiştir. Tabakalı kompozit kirişlerde büyük genlikli titreşimler oldukça etkilidir. Bu sebeple frekanslar ilk sekiz mod için tablo haline getirilip yorumlanmıştır.

Anahtar Kelimeler

Sonlu Elemanlar, Kompozit Malzemeler, Titreşim, Dinamik Analiz, Doğal Frekans

Kaynakça

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