Experimental investigation on amplitude-frequency dependence of C-S-C-S rectangular plate 2nd mode shape
El Mehdi ABDEDDINE, Abdelfattah MAJID, Khalid ZARBANE & Zitouni BEIDOURI
Abstract
The theoretical of Benamar’s method that based on Hamilton’s principle and spectral analysis, has extended to study first and second mode shape of clamped-clamped beams in order to investigate dependence between the nonlinear fundamental frequencies, nonlinear mode shapes and the nonlinear bending stress. This model used and applied to investigate the dynamic behavior of fully clamped rectangular plates and of C-S-C-S and C-S-S-S rectangular plates, which published previously by Z.Beidouri. The amplitude frequency dependence has been investigated experimentally in part I carefully in case of C-S-C-S of the first mode shape and compared with those obtained numerically. This paper will explain the identification of the second mode shape and discuss the results obtained experimentally of the amplitude frequency dependence in the case of C-S-C-S rectangular plate. The transverse harmonic vibration has been provided by an electrodynamic exciter that excited the rectangular plate at the center near the second resonance frequency which allowing to identify the second mode shape and investigate the amplitude frequency dependence.
Keywords
References
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