FINITE ELEMENT MODELING OF ANNULAR-LIKE ACOUSTIC CAVITIES.

被引：0

作者：

Kung, Chaw-Hua ^{[1
]}

Singh, Rajendra ^{[1
]}

机构：

[1] Ohio State Univ, Dep of Mechanical, Engineering, Columbus, OH, USA, Ohio State Univ, Dep of Mechanical Engineering, Columbus, OH, USA

来源：

Journal of Vibration, Acoustics, Stress, and Reliability in Design | 1985年 / 107卷 / 01期

关键词：

HEAT TRANSFER - Conduction - MATHEMATICAL TECHNIQUES - Finite Element Method;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

A finite element technique has been developed to find natural frequencies and modes of undamped three-dimensional acoustic cavities. This method utilizes the analogy between a special form of the discretized transient heat conduction equations and discretized equations of acoustic pressure oscillation. The proposed technique is verified by applying it to several cavities of known theoretical eigensolutions. Computer results for an acoustic ring, an acoustic disk, and a pure annular cavity match extremely well with exact solutions. In addition, the condensation scheme is investigated and guidelines of selecting acoustic master nodes appropriately are also discussed in the paper. Using the validated finite element method along with suitable condensation, the eigenvalue problem of an annular-like cavity is solved.

引用

页码：81 / 85