Burlayenko, Vyacheslav. N.Sadowski, Tomasz2021-02-102021-02-102009Burlayenko V. N. Free vibration of sandwich plates with impact-induced damage [Electronic resource] / V. N. Burlayenko, T. Sadowski // Proceedings in Applied Mathematics and Mechanics : electronic ed. – 2009. – Vol. 9, Iss. 1: Spec. Iss. : 80th Annual Meeting of the International Association of Applied Mathematics and Mechanics (GAMM), Gdansk, [09-13 February], 2009. – P. 179-180. – URL.: https://onlinelibrary.wiley.com/doi/pdf/10.1002/pamm.200910064, free (accessed 10.02.2021).https://repository.kpi.kharkov.ua/handle/KhPI-Press/50914Free vibrations of impact-damaged sandwich plates with honeycomb and foam cores are studied. It is assumed that damages caused by impact events are to exist before the vibration start and to be constant during oscillations. The influence of the impact damage modes involving the core crushing (planar damage), face sheets fracture (indentation) and the core to face sheets interface degradation (debonding) on the natural frequencies and associated mode shapes of the sandwich plates was investigated using commercially available finite element code ABAQUS.enThesisdoi.org/10.1002/pamm.200910064