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Dynamic instability characteristics of advanced grid stiffened conical shell with laminated composite skins
, Article Journal of Sound and Vibration ; Volume 488 , 2020 ; Kouchakzadeh, M. A ; Mirzavand, B ; Noghabi, M ; Sharif University of Technology
Academic Press
2020
Abstract
Dynamical instability characteristics of sandwich truncated conical shell are investigated. The three-layered shell is composed of advanced grid stiffened core and laminated composite skins. The core maybe made of three different fiber paths. The conical shell with simply-supported ends is subjected to two different types of time-dependent axial compressions. The equations of motion and compatibility are derived by considering Kirchhoff-Love assumptions and von Karman relations. The solution procedure is divided to two steps. First, the terms consisting of spatial derivatives are eliminated by applying a stress function and following the Galerkin method. Second, the terms with temporal...