TAILIEUCHUNG - Báo cáo "Vibration of corrugated cross-ply laminated composite plates "

In the present paper the governing equations for dynamical analysis of corrugated cross-ply laminated composite plates in the form of a sin wave are developed based on the Kirchoff-Love’s theory and the extension of Seydel’s technique. The problems of natural vibration and forced vibration of a plate with various boundary conditions are studied. Effects of factors as geometry dimensions, order of laminate as well as waved-amplitude on frequency of natural vibration, amplitude of forced vibration of the corrugated cross-ply laminated composite plates are also analysed. . | VNU Journal of Science Mathematics - Physics 23 2007 105-112 Vibration of corrugated cross-ply laminated composite plates Khuc Van Phu1 Le Van Dan2 1 Military logistical Academy 100 Hoang Quoc Viet Cau Giay Hanoi Vietnam 2Military Technical Academy Received 5 October 2007 Abstract. In the present paper the governing equations for dynamical analysis of corrugated cross-ply laminated composite plates in the form of a sin wave are developed based on the Kirchoff-Love s theory and the extension of Seydel s technique. The problems of natural vibration and forced vibration of a plate with various boundary conditions are studied. Effects of factors as geometry dimensions order of laminate as well as waved-amplitude on frequency of natural vibration amplitude of forced vibration of the corrugated cross-ply laminated composite plates are also analysed. 1. Introduction Laminated structures like corrugated cross-ply laminated composite plates in the form of sine wave or fiber-reinforced composite plates are used widely in practice. Results of research about statical and dynamical problems of laminated composite flat plates were presented mainly in Chia s book 1 . A series of general articles about studying vibration of plates were reviewed by Sathyamoonthy 2 . However the analysis of corrugated laminated composite plates in the form of sine wave has received comparitively little attention. Corrugated plates of wave form made of isotropic elastic material were considered as flat orthotropic plates with corresponding orthotropic constants determined by the Seydel s technique. In this paper the governing equations for dynamical analysis of corrugated cross-ply laminated composite plates in the form of sine wave are established based on the Kirchoff-Love s theory and the extension of Seydel s technique. 2. Constitutive equations of corrugated laminated composite plates Consider a rectangular symmetrically laminated composite corugated plate in the form of sine wave see Fig. 1 .

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