Analyses of energy absorbing device based on damped dynamic vibration absorber

作者：Zheng Zhongqiang; Yao Tao; Huang Peng; Chang Zongyu

来源：Transactions of the Canadian Society for Mechanical Engineering, 2016, 40(4): 457-467.

• Absorbing devices
• Dynamic vibration absorber
• Electromagnetic transducer
• Environmental issues
• Environmental loadings
• Excitation frequency
• Optimal excitation frequency
• Power

Vibrations exist widely in tall buildings, vehicle systems, and ocean platform suffering from environmental loading such as wind, wave or earthquake. With the global concern on energy and environmental issues, energy absorbing from large-scale vibrations becomes a research frontier. A type of damped dynamics vibration energy absorber is built and analyzed in this paper, in which an added mass is connected to the vibration system with the electromagnetic transducer and spring. The relationships between electrical damping ratio, excitation frequency ratio and dimensionless power are analyzed in frequency domain. The optimal parameters for maximizing the power output are discussed in analytical form while taking the inherent mechanical damping of the system into account. The results indicate that when the system has suitable optimal excitation frequency ratio and damping ratio and so on, more power can be obtained. It is helpful for the design of energy absorber devices.

• 出版日期2016
• 单位河北工业大学