✦ LIBER ✦

AN INVERSE METHOD FOR THE ASSIGNMENT OF VIBRATION NODES

✍ Scribed by J.E. MOTTERSHEAD; C. MARES; M.I. FRISWELL

Publisher: Elsevier Science
Year: 2001
Tongue: English
Weight: 155 KB
Volume: 15
Category: Article
ISSN: 0888-3270
DOI: 10.1006/mssp.2000.1353

No coin nor oath required. For personal study only.

✦ Synopsis

An inverse method for the assignment of natural frequencies and nodes of normal modes of vibration by the addition of grounded springs and concentrated masses is presented. The method relies entirely on measured receptances at the coordinates of the nodes and the modi"cations. Measurements at other locations are not needed, neither is there any need for an analytical model. The sti!ness and mass parameters are determined by an analysis of the null space of a matrix containing the measured receptances. Example problems are used to illustrate the application of the technique.

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