Vibration absorbers are employed for both structural safety and comfort reasons. This paper explores a novel absorber which uses the sloshing of granular particles to dissipate energy in a rolling container. Some of the parameters which affect energy dissipation have been experimentally studied. Detailed description of one experiment is given. Further work involves numerical exploration.

In this paper a stability problem for double pendulum is discussed. A damping device of passive type is used to stabilize small free oscillations of perturbed system. The simplified approach is suggested to prove the asymptotic stability of equilibrium.

The online frequency estimation of forced harmonic vibrations on a building-like structure, using nonlinear flexible vibration absorber in cantilever beam configuration, is addressed this article. Algebraic formulae to compute the excitation vibrating mechanical system solely available measurement signals position, velocity, or acceleration are presented. Fast algebraic can, thus, be implemente...

In this paper, we propose a novel Maxwell dynamic vibration absorber (DVA) with lever, inerter, and grounded stiffness. Firstly, the governing equation of coupled system is established. The analytical formula amplitude amplification factor primary natural frequencies are derived. There three fixed points in amplitude–frequency response curve system, which independent damping. Then, based on H∞ ...

Abstract In this paper a broadband active shunt technique for controlling vibration in piezoelectric laminated structures is proposed. The effect of the negative capacitance controller is studied theoretically and then validated experimentally on a piezoelectric laminated simply supported plate. The ‘negative capacitance controller’ is similar in nature to passive shunt damping techniques, as a...