Design and Analysis of a Sloshing Liquid Damping Device with Elastic Baffle Vibrator

Abstract

Abstract Sloshing liquid damping technology is a typical passive damping technology, which has many advantages in application. To improve the sloshing intensity of liquid, it is necessary to install internal components to increase damping of liquid. Elastic materials, especially rubber materials, are widely used as internal components of the deep-water damper, which would interact well with damping liquid. In this paper, a damping device combining elastic material with sloshing liquid damper is adopted, and a new-type elastic baffle oscillator sloshing liquid damper is proposed by using the lag function of the spring device to transmit the force. The damping mechanism of the structure and the core factors affecting the damping performance are studied. The numerical simulation results show that by adjusting the stiffness of the internal spring, the phase difference between the structural displacement and the acting force of the internal spring on the structure can be changed in a large range. Under the working condition of this paper, when the elastic coefficient is 2000 N·m−1, the phase difference is close to π/2, and the amplitude of the last wave trough of the structural displacement is only 0.5% of the initial amplitude, which indicates that the damping performance is excellent.