Modal Analysis of a Clamped-Clamped U Frame Structure

Abstract

Determining of dynamic behaviours of the many machine elements used in the industry is an important issue in terms of the safe operation of the structure and the performance of the machine. Modal analysis method is widely used to determine the dynamic properties of the structures. In this study, theoretical and experimental modal analyses of a clamped-clamped U frame. Theoretical modal analysis is performed using ANSYS programme. Experimental modal analysis is performed with OROS Or36 vibration analyser and OROS modal analysis software. The results obtained from experimental and theoretical studies were compared and it was found that the model created in ANSYS successfully represented the experimental model.

Keywords

• Modal Analysis,Frame Structures,Finite Elements,Vibration Measurement

İki Ucu Ankastre U Çerçeve Yapının Modal Analizi

Abstract

Endüstride kullanılan birçok makine elemanının dinamik davranışlarının belirlenmesi, yapının güvenli bir şekilde çalışması ve makinenin performansı açısından oldukça önemli bir konudur. Modal analiz tekniği yapıların dinamik özelliklerinin belirlenmesi amacıyla yaygın bir şekilde kullanılmaktadır. Bu çalışmada iki ucu ankastre bir U çerçeve yapının teorik ve deneysel modal analizleri gerçekleştirilmiştir. Teorik modal analiz ANSYS programı kullanılarak yapılmıştır. Deneysel modal analiz ise OROS Or36 titreşim analizörü ve OROS modal analiz yazılımı ile gerçekleştirilmiştir. Deneysel ve teorik çalışmalardan elde edilen sonuçlar karşılaştırılmış ve ANSYS’te oluşturulan modelin deneysel modeli başarılı bir şekilde temsil ettiği görülmüştür.

Keywords

• Modal Analiz,Çerçeve Yapılar,Sonlu Elemanlar,Titreşim Ölçümü

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