General higher-order layer-wise theory for free vibrations of doubly-curved laminated composite shells and panels

摘要: ABSTRACTThe present article illustrates a general formulation for higher-order layer-wise theory related to the analysis of free vibrations thick doubly-curved laminated composite shells and panels. The theoretical framework relates dynamic shell structures by using displacement field based on Carrera Unified Formulation (CUF), including stretching effect each layer. order expansion along thickness direction is taken as parameter. starting point propose kinematic assumption, with an arbitrary number degrees freedom. main aim this work determine explicit fundamental operators that can be used (LW) approach. These are obtained first time author motion equations described in orthogonal curvilinear co-ordinate system. vibration and...