Please use this identifier to cite or link to this item:
Analysis of Delaminated Plates with Piezoelectric Sensors Subjected to Transverse Impact
Chen, Jaunan Nan
Concerning the dynamic analysis of flexible structures with piezoelectricsensors, most of the papers published to date have adopted either the Bernouli-Euler beam model or the classical plate model. Furthermore, it seems there are rather few studies available that have treated the dynamic problems of the delaminated composite plates with piezoelectric sensors, which is subjected tothe impact from a foreign object. The present formulation include the effect of transverse shear deformationas well as that of the bending-extension coupling caused by the presence of delamination within the plate. The effects of boundary conditions, delamination size, and delamination location on the natural frequencies and the transient behavior of composite plates are investigated. A transient dynamic finite element analysis is presented for studying theresponse of laminated composite plates due to the transverse impact of a foreignobject. The contact force is determined using the modified Hertzian contact law of Sun''s. Two different methods are used in the teansient dynamic analysis. One is thedirect integral method where the Newmark scheme is adopted to perform time integration. The other is the model method where the physical equations of motionare transformed into a set of independent modal equations. Next, the modal displacements of the plate are computed, which are then transformed back to the physical coordinates. After that, the contact force is determined using the contactlaw. Comparisions are made between the present results and those publishedpapers. An excellent agreement is found betweem them.
|Appears in Collections:||機械工程學系所|
Show full item record
TAIR Related Article
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.