Determination of natural frequencies of a thick spinning annular disk using a numerical Rayleigh–Ritz’s trial function
作者:
Sunil K. Sinha,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1987)
卷期:
Volume 81,
issue 2
页码: 357-369
ISSN:0001-4966
年代: 1987
DOI:10.1121/1.394901
出版商: Acoustical Society of America
关键词: RITZ METHOD;EIGENVALUES;BOUNDARY CONDITIONS;ROTATION;DISKS
数据来源: AIP
摘要:
Consideration is given in this paper to the problem of a thick, spinning, annular disk constrained at its inner radius. Mindlin’s transverse shear deformation and rotary inertia terms are included in the eigenvalue formulation. In the modified Rayleigh–Ritz method used here, the ‘‘admissible’’ or ‘‘trial functions’’ are developed numerically by an iterative scheme so that all the forced, as well as natural, boundary conditions are fully satisfied. The natural frequencies for different mode shapes of the disk have been computed and are presented in a nondimensional form as a function of rotating speed.
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