Cansu GENÇBAY, Vedat Ziya DOĞAN

2411

Piezoelektrik Malzemeler Kullanilarak Çeşitli Yükler Altinda DüzPlakalarin Titreşim Kontrolü Üzerine Sayısal Çalışma

Bu çalışmada piezoelektrik yapılarla plakaların titreşim kontrolü amaçlanmıştır. Ek olarak, plakada farklı malzemeler kullanılarak malzeme özelliklerinin değişiminin titreşim kontrolündeki etkisini ve piezoelektrik yapılarla olan bağlantısı incelenmiştir. Kullanılan PZT yamaların konumları için plakanın titreşim mod şekilleri ve doğal frekansları temel alınarak yüksek gerinim görülen yerler seçilmiştir. Bu yamaların optimum kalınlığı plakanın malzeme ve geometrik özelliklerine ve piezoelektrik yamaların malzeme özelliklerine bağlı olarak hesaplanmıştır. Ayrıca, plakanın yamaların bulunduğu yüzeylerdeki hız değerleri alınarak piezoelektrik yapıların voltaj değerleri elde edilmişitir. Bu çalışmada, titreşim kontrolünü sağlamak adına piezoelektrik yamalar kullanılmıştır ve plakanın yer değiştirmesindeki azalma incelenmiştir. Plakanın malzemesi değiştikçe kullanılması gereken piezoelektrik yamalarının kalınlıklarının değişmesi gerektiği görülmüştür. Ayrıca uygulanması gereken voltaj değerlerinin yamaların bulunduğu konuma göre değiştiği incelenmiştir. Ek olarak, sönümleme parametresinin farklı yüklemler altında sistemin cevabına farklı etkileri olduğu görülmüştür.

A Numerical Study on Vibration Control of Flat Plates Under Various Loads Using Piezoelectric Materials

In this study, vibration control of rectangular plates with piezoelectric (PZT) structures under different loading conditions is considered. By using different materials on the plate, the effect of material properties on vibration control and its connection with piezoelectric structures are investigated. The PZT patches are placed in the certain areas of the plate. The strains are greatest in these regions, and these strains are derived from the modes and natural frequencies of the plate. The optimum thicknesses of these patches are determined from the material and geometric properties of the plate and the material properties of the piezoelectric patches. It is found that the thickness of the piezoelectric patches must change as the material of the plate changes. It is observed that the applied voltage values vary according to the location of the patches. In addition, it has been seen that the damping parameter has different effects on the response of the system under different loads.
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Havacılık ve Uzay Teknolojileri Dergisi-Cover
  • ISSN: 1304-0448
  • Yayın Aralığı: Yılda 2 Sayı
  • Başlangıç: 2003
  • Yayıncı: Dr. Öğr. Üyesi Fatma Kutlu Gündoğdu
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