安装预紧量对金属橡胶构件干摩擦阻尼的影响  

Effects of preloading of metal rubber elements on its dry friction damping characteristics

作　　者：敖宏瑞[1] 孟庆鑫 姜洪源[1] ULANOV A M 

机构地区：[1]哈尔滨工业大学机电工程学院,黑龙江哈尔滨150001 [2]哈尔滨工程大学机电学院,黑龙江哈尔滨150001 [3]萨玛拉国立航空航天大学飞行器发动机系,俄罗斯萨玛拉443086

出　　处：《材料科学与工艺》2005年第3期225-227,共3页Materials Science and Technology

基　　金：国家自然科学基金资助项目(50075017);哈尔滨市青年科学基金资助项目(2002AFQJX037).

摘　　要：为了研究安装预紧量对金属橡胶构件的干摩擦阻尼性能及寿命的影响,分别对预紧量为Q=1.1mm和Q=2.2mm的金属橡胶隔振器进行了静态及振动实验研究.结果表明:改变金属橡胶隔振器的预紧量,其承载能力及能量耗散性能均将发生变化,具有较小预紧量(Q=1.1mm)的金属橡胶隔振器的承载能力及耗散振动能量的能力优于具有较大预紧量(Q=2.2mm)的金属橡胶隔振器的相应指标,且使用寿命比较长.实验证明,适当控制金属橡胶构件的预紧量,可以实现对金属橡胶隔振器的干摩擦阻尼性能的有效控制.In order to study the effect of the preloading of MR elements on the dry friction damping and lifetime characteristics of isolator, static and dynamic experiments are carried out on Metal Rubber (MR) isolators with preloading Q=1.1 mm and Q=2.2 mm, respectively. The experimental results indicate that the loading capacity and the ability of dissipating vibration energy of the MR isolator are influenced by the preloading of MR components. Compared with the isolator with large preloading (Q=2.2 mm), the isolator with little preloading (Q=1.1 mm) shows better performance in loading capacity and the ability of energy dissipation, and it has longer working time. It is concluded that the dry friction damping characteristics of MR isolator can be controlled effectively by the adjustment of the preloading of MR components in isolator.

关 键 词：金属橡胶 预紧量 干摩擦阻尼 构件 安装 橡胶隔振器 阻尼性能 承载能力 实验研究 发生变化 能量耗散 振动能量 实验证明 使用寿命 有效控制 

分 类 号：TB535.1[理学—物理] TH133.33[理学—声学]