G1001-3-1 Modal Parameters Identification of Circular Cylindrical Shells by Theoretical and Experimental Modal Analysis

2009 ◽  
Vol 2009.5 (0) ◽  
pp. 93-94
Author(s):  
Masahide KOIWA ◽  
Koji SEKINE
Keyword(s):  
Modal Analysis ◽  
Cylindrical Shells ◽  
Experimental Modal Analysis ◽  
Parameters Identification ◽  
Modal Parameters ◽  
Modal Parameters Identification ◽  
Circular Cylindrical Shells

Effect of Bass Bar Tension on Modal Parameters of a Violin's Top Plate

2015 ◽  
Vol 39 (1) ◽  
pp. 145-149 ◽  
Author(s):  
Ewa B. Skrodzka ◽  
Bogumił B.J. Linde ◽  
Antoni Krupa
Keyword(s):  
Modal Analysis ◽  
Experimental Modal Analysis ◽  
Mode Shapes ◽  
Modal Parameters ◽  
Normal Value ◽  
Modal Damping

Abstract Experimental modal analysis of a violin with three different tensions of a bass bar has been performed. The bass bar tension is the only intentionally introduced modification of the instrument. The aim of the study was to find differences and similarities between top plate modal parameters determined by a bass bar perfectly fitting the shape of the top plate, the bass bar with a tension usually applied by luthiers (normal), and the tension higher than the normal value. In the modal analysis four signature modes are taken into account. Bass bar tension does not change the sequence of mode shapes. Changes in modal damping are insignificant. An increase in bass bar tension causes an increase in modal frequencies A0 and B(1+) and does not change the frequencies of modes CBR and B(1-).

Sign in / Sign up

Export Citation Format

Share Document