The effectiveness of variable parameter squeeze oil film damper (VPSFD) in the steady and transient unbalance response control of flexible rotors is examined.First, a preliminary property design of VPSFD is presente...The effectiveness of variable parameter squeeze oil film damper (VPSFD) in the steady and transient unbalance response control of flexible rotors is examined.First, a preliminary property design of VPSFD is presented on the improved finite length bearing theory.VPSFD is different from the conventional squeeze film damper, and is designed to possess continuous changeable oil film clearance and land length. These parameters can be exactly adjusted on a computer by sending commends to a special control device. Then, a simple rotor system with VPSFD is investigated. The experimental results show that VPSFD can attenuate the rotor system resonance peak due to unbalance.展开更多
在分析调谐质量阻尼器(Toned Mass Dampers,简称TMD)减振原理以及TMD参数对主结构振动特性影响的基础上,得出了TMD参数优化的理论依据,进而采用改进的单纯形法计算出优化的TMD参数值,并通过在桥梁振动控制中的应用,说明了所得出的TMD优...在分析调谐质量阻尼器(Toned Mass Dampers,简称TMD)减振原理以及TMD参数对主结构振动特性影响的基础上,得出了TMD参数优化的理论依据,进而采用改进的单纯形法计算出优化的TMD参数值,并通过在桥梁振动控制中的应用,说明了所得出的TMD优化参数对于小阻尼既有结构进行振动控制是非常有效的。展开更多
文摘The effectiveness of variable parameter squeeze oil film damper (VPSFD) in the steady and transient unbalance response control of flexible rotors is examined.First, a preliminary property design of VPSFD is presented on the improved finite length bearing theory.VPSFD is different from the conventional squeeze film damper, and is designed to possess continuous changeable oil film clearance and land length. These parameters can be exactly adjusted on a computer by sending commends to a special control device. Then, a simple rotor system with VPSFD is investigated. The experimental results show that VPSFD can attenuate the rotor system resonance peak due to unbalance.
文摘在分析调谐质量阻尼器(Toned Mass Dampers,简称TMD)减振原理以及TMD参数对主结构振动特性影响的基础上,得出了TMD参数优化的理论依据,进而采用改进的单纯形法计算出优化的TMD参数值,并通过在桥梁振动控制中的应用,说明了所得出的TMD优化参数对于小阻尼既有结构进行振动控制是非常有效的。
