On energy dissipation of bi-stable structure for vibration control and its parameter study

• Main Authors: Hao-Yuan Lin, 林浩源
• Other Authors: 吳天堯
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/62610505269760762628

碩士 === 國立中興大學 === 機械工程學系所 === 104 === Bi-stable oscillator is one of the nonlinear oscillators. While the bi-stable oscillator is excited by the external force within a specific frequency and amplitude range, it presents a periodic behavior called “snap-through”, which is the characteristic of the bi-stable oscillation system. Under such a behavior, a large vibratory amplitude can be observed and then the energy dissipation in the damper can be enhanced in the bi-stable oscillation system. It helps to achieve the structural vibration suppression. The purpose of the research is to discuss the conditions in which the bi-stable oscillator is excited to present the snap-through behavior, so that it improves the efficiency of energy dissipation in the damper and the vibration suppression performance. The linear mono-stable oscillator is also compared to verify that the nonlinear bi-stable system enhance the damping energy dissipation and vibration suppression performance. The frequency response curves of the nonlinear bi-stable system is constructed to discuss the excited conditions of the snap-through phenomenon.