Baza Publikacji Pracowników Politechniki Lubelskiej

Status:
Autorzy:	Lenci Stefano, Warmiński Jerzy
Rok wydania:	2012
Wersja dokumentu:	Elektroniczna
Język:	angielski
Numer czasopisma:	3
Wolumen/Tom:	69
Impact Factor:	3,009
Web of Science® Times Cited:	10
Scopus® Cytowania:	12
Bazy:	Web of Science \| Scopus
Efekt badań statutowych	NIE
Materiał konferencyjny:	NIE
Publikacja OA:	NIE
Abstrakty:	angielski
	Free and forced flexural nonlinear vibrations of a two-layer beam are investigated. Each beam is assumed to have Euler–Bernoulli kinematics and free-free boundary conditions. The interface allows only nonlinear elastic slip between adjacent sides of the beams, so that the transversal displacement is unique. Free vibrations are considered first by the multiple time scale method, which allows to determine the amplitude dependent nonlinear natural frequencies of the system. It is shown that the nonlinear coefficient of the backbone curve is positive, so that hardening/ softening behavior of the interface generates hardening/ softening behavior of the whole structure. The modifications of the linear normal modes for moderate excitation amplitudes have been computed. Forced and damped nonlinear oscillations are then considered by the same mathematical method, and the nonlinear frequency response curves are obtained.

Free and forced nonlinear oscillations of a two-layer composite beam with interface slip