Structural modification for the assignment of zeros using measured receptances

Authors
Citation
Je. Mottershead, Structural modification for the assignment of zeros using measured receptances, J APPL MECH, 68(5), 2001, pp. 791-798
Citations number
18
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Mechanical Engineering
Journal title
JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME
ISSN journal
0021-8936 → ACNP
Volume
68
Issue
5
Year of publication
2001
Pages
791 - 798
Database
ISI
SICI code
0021-8936(200109)68:5<791:SMFTAO>2.0.ZU;2-6
Abstract
In many engineering applications it is desirable to assign the zeros of poi nt or cross receptances to particular frequencies. This means that at the c hosen coordinate no vibration will be experienced at those frequencies. It is shown how such an objective can be achieved by means of passive stiffnes s, damping, and mass modifications to the structure. The frequency response s of a subsidiary eigenvalue problem, the eigenvalue problem of the zeros, are determined in order that the methods of inverse structural modification may be applied. The technique requires only a small number of measurements from the structure in its unmodified condition. Numerical and physical exp eriments are carried out to illustrate the application of the method.