摘要：AbstractThis paper presents a numerical study of the application of magnetorheological (MR) fluid in a piezoelectric energy harvesting system based on a cantilever architecture. The study of variable damping using a thin film magnetorheological (MR) fluid is presented in this paper. MR fluids change their rheological properties upon the application of a magnetic field. This change in rheology makes them variable dampers with a controllable damping force. The simulated results showed that the damping ratio decreases from 0.02 to 0.0014 upon the application of a magnetic field of 0.1T. The decrease in damping is shown to increase the power output due to the increase in the quality factor of the harvester. Also, the application of the fluid has been shown to enhance frequency tuning.
关键词：KeywordsMagnetorheological fluidsqueeze mode yield stresspiezoelectric energy harvestervariable dampingfrequency enhancement
