摘要
多重调质阻尼器（MTMD）是由多个具有不同频率、不同阻尼或不同质量的调质阻尼器构成的动力吸振器群，它对宽带激励下结构振动的控制效率在一定条件下要优于单调质阻尼器（STMD）．针对大跨桥梁在紊流风作用下的抖振特点，以上海杨浦大桥为例分析了MTMD的制振机理通过数值分析，讨论了MTMD的频率带宽。
Multiple Tuned Mass Damper (MTMD) is a kind of dynamic absorber group that consists of a large numberof small oscillators with distributed frequencies and damping or mass. The vibration reduction effectiveness of MTMD tostructures under wide-band excitation is better than those of Single TMD (STMD). In the present paper, the windinduced buffeting suppressing characteristics of TMD to bridges is analysed. The effects of frequency distribution widthband, damping ratios and frequency ratio of TMD to the vibration reduction effectiveness and the equivalent dampingratio are discussed.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
1998年第2期125-129,共5页
Journal of Tongji University:Natural Science
基金
国家自然科学基金!59178358
关键词
多重调质阻尼器
桥梁
抖振
振动控制
Multiple Tuned Mass Damper (MTMD)
Bridges
Buffeting
Vibration control
