摘要
共振转换器是一种有效的动力反共振隔振装置。文章建立了共振转换器的动力学模型,推导了共振转换器隔振系统的力传递率表达式,以此作为理论预测依据分析了其动力反共振隔振特性,并且讨论了相关参数影响,最后介绍了共振转换器在船舶轴系纵向减振方面的应用。仿真结果表明,共振转换器具有液压放大效应和反共振机制,在反共振条件下力传递率可以降低至极低水平,选择低粘度和低密度的流体介质可以提高隔振效果。轴系试验台测试结果显示,共振转换器在隔离宽带振动的同时,还可有效地消减轴系纵向振动的低频共振峰,具有很大的实船应用价值。
The resonance changer is one of effective dynamic anti-resonance vibration isolators. In this paper, a mathematical explanation was given of the performance of resonance changer, followed by the derivation of the force transmissibility, which was seemed as theoretical basis of dynamic anti-resonance vibration isolation analysis. The effect on force transmissibility of considerable variations in related parameters was also discussed, leading up to conclusion that the use of low viscosity and low density fluid is of benefit.Moreover, the application of resonance changer for marine shafting longitudinal vibration control was introduced. It is observed that resonance changer has hydraulic application effect and anti-resonance mechanism. Under the condition of anti-resonance, the force transmissibility can be reduced at very low level. The experiment results of shafting test rig indicate that resonance changer can isolate vibration in broad frequency band, and attenuates low-frequency resonance.
出处
《船舶力学》
EI
CSCD
北大核心
2016年第1期222-230,共9页
Journal of Ship Mechanics
基金
教育部高等学校博士学科点专项科研基金项目(20130142110014)
国家自然科学基金委员会资助项目(51479078)
关键词
共振转换器
动力反共振隔振
力传递率
轴系纵向减振
resonance changer
dynamic anti-resonance vibration isolation
force transmissibility
shafting longitudinal vibration control
