INFLUENCE OF THE STRENGTHENING BARS OF GUITAR'S PLATES ON THE NORMAL MODES OF VIBRATIONS USING FINITE ELEMENT METHOD

摘要

The paper presents the results of the modal analysis of six types of structures made from plates. Firstly, was done geometrical modeling of structures, after which they were numerical modeled using shell and solid finite elements. The next step consisted in simulating the structures behavior to free vibration for different thicknesses and materials. The results were processed and compared in order to establish the influence of various factors on their natural frequencies, modal shapes and amplitudes. This study is a part of a wider research whose purpose is optimizing structures in order to improve the acoustic performance of classical guitar.