Baza Publikacji Pracowników Politechniki Lubelskiej

Status:
Autorzy:	Mitura Andrzej, Warmiński Jerzy, Brunetti Matteo, Romeo Francesco
Rok wydania:	2022
URL do źródła	LINK
Język:	angielski
Źródło:	10th European Nonlinear Dynamics Conference ENOC 2022 (ENOC 2020 +2)
Miasto wystąpienia:	Lyon
Państwo wystąpienia:	FRANCJA
Efekt badań statutowych	NIE
Abstrakty:	angielski
	Bistable cantilever shells subjected to harmonic base excitation have been experimentally investigated with the aim of extending previous quasi-static studies [1] and characterizing their nonlinear dynamic behavior. The tested shells have rectangular planform and almost cylindrical shape. Their shorter edge, flattened by means of a specifically designed clamp, has been excited using an electrodynamic shaker. Sensors and dedicated interface electronics for forward and backward frequency sweeping and control have allowed the identification of the nonlinear resonance curves. Such curves describe the intrawell nonlinear dynamics around the stable equilibrium configurations of the tested shells and have clearly exhibited the expected softening behaviour. Moreover, the experimental campaign provided insights on the dynamic regimes enabling to trigger snap-through mechanisms.

Experimental Dynamics of Composite Bistable Cantilever Shells