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中文摘要：
对环形动力吸振器在转子振动控制中的应用进行了实验研究,基于单圆盘转子模型和振动特征,设计了一种安置于轴承上的对分式环形动力吸振器.吸振器可以安装在两轴承间任意位置,不改变原有支撑结构,不影响转子动力特性.建立了转子吸振器减振实验台,对转子经过临界转速时的振动进行了实验,结果表明吸振器能有效降低转子经过临界转速时70%以上的振动.增加吸振器质量,可以精确调节吸振器固有频率,并拓宽减振频带.实验研究了吸振器安装位置与减振效果的关系,结果表明在转子振幅较大区域,减振效果较好.对比了不同数量吸振器在转子不平衡振动下的减振效果,结果表明安装2个吸振器的减振效果要好于单独1个作用时.
英文摘要：
The application of ring dynamic vibration absorber in vibration control of rotor was studied by experiment.A kind of separable ring dynamic vibration absorber placed on bearing was designed based on single disc rotor model and vibration characteristics.Vibration absorber can be installed on optional position between two bearings without changing any support structure and affecting dynamic performance of rotor.The rotor experiment rig of vibration reduction with vibration absorber was built to measure the vibration with critical speed of rotor.The results show that vibration absorber can decrease vibration greatly,and the vibration amplitude is dropped by 70% at critical speed of rotor.The frequency range of vibration reduction can be broadened and the natural frequency of vibration absorber can be adjusted accurately by increasing the mass of vibration absorber.The relationship between vibration reduction effect and installation position of vibration absorber was studied by experiment.The results show that position of large amplitude is better than other area.The vibration reduction effect with different numbers of vibration absorbers was compared under rotor imbalance vibration,and the result indicates that the effect of two vibration absorbers is better than that of one.
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