Analysis and study on acoustical quality of a piano soundboard based on ANSYS

Wenhua Mao

COMPUTER MODELLING & NEW TECHNOLOGIES 2013 17(5D) 92-96

Quzhou University, Zhejiang Quzhou 324000, China

Basing on the theory of finite element method and modal analysis，the models of a bare plate and a piano soundboard are established in the ANSYS separately，then the two models' natural frequency and mode shape are calculated and compared. What is more，the influences of density and thickness on the piano soundboard's modal frequency are discussed. The result reflects that the piano soundboard's modal frequency is higher than the bare plate's and the piano soundboard vibrates in more complicate way. At the same time, it is found that the piano soundboard's modal frequency turns to be larger when the thickness turns to be larger and turns to be smaller when the density turns to be larger.