Burlayenko, V. N.Sadowski, Tomasz2021-02-102021-02-102010Burlayenko V. Numerical modal analysis of sandwich plates partially damaged due to impacts / V. Burlayenko, T. Sadowski // Nonlinear Dynamics–2010 = Нелинейная динамика–2010 : proceedings the 3rd International Conference, dedicated to the 125th Anniversary of the National Technical University "Kharkov Polytechnic Institute", September 21-24, 2010 / National Technical University "Kharkov Polytechnic Institute" [et al.]. – Kharkov : NTU "KhPI", 2010. – 284-289.https://repository.kpi.kharkov.ua/handle/KhPI-Press/50938Dynamic responses of sandwich composite plates containing impactinduced damage are studied. A finite element formulation of the problem is developed by using the high-order sandwich plate theory. The finite element code ABAQUS is used to create a finite element model of the sandwich plate accounting for geometrical imperfections, stiffness changes and intermediate contact of detached plate parts caused by impact damage and to fulfil the free and forced vibration analyses.enThesis