Abstract
Knowing how a musical instrument vibrates can benefit the tonal characteristics shaping of the instrument. In this research, an approach for investigating the mode shapes and natural frequencies of Setar body is addressed. First, mechanical properties of wood used in the production of Setar are analyzed experimentally. Then a numerical modal test is performed to find the mode shapes and natural frequencies of Setar structure. To validate the results obtained by the numerical method, experimental modal testing is also done for the structure, and it is found that the results of both the methods are in good consistency. As the vibration pattern of plates is of utmost importance in the production of musical instruments, vibration patterns of a Setar plate are experimentally extracted and the results are compared with finite element analysis.
Highlights
Modal analysis is one of the important methods utilized by researchers to study the vibrations of different structures and their system identification [1,2,3,4,5,6,7,8]
As the vibration pattern of plates and soundboards are of utmost importance in the production of musical instruments, vibration patterns of a Setar plate are experimentally extracted and the results are evaluated
The scanning has been performed in three different angles toward the Setar structure, and the obtained cloud of points has been registered under Laissez Faire la Musique (LFM) software
Summary
Modal analysis is one of the important methods utilized by researchers to study the vibrations of different structures and their system identification [1,2,3,4,5,6,7,8] This method is employed to investigate the vibrational properties of the stringed musical instruments. Mansour et al [24,25,26,27] studied Finite Element Modeling of Setar, a Persian long-necked lute, under CATIA, Hyper Mesh, Nastran, and Hyper Graph software They performed a modal test on the sound box, extracted its Frequency Response Function (FRF), and considered the effect of the bridge on the produced sound. As the vibration pattern of plates and soundboards are of utmost importance in the production of musical instruments, vibration patterns of a Setar plate are experimentally extracted and the results are evaluated
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