1) frictionless instability
无摩擦振型
2) friction vibration
摩擦振动
1.
The turbine friction vibration cause during the period of start-up and in the early time of commercial service in Lingao nuclear power station is analyzed,and the adopted measures to solve the problem are introduced.
分析了岭澳核电站投运初期在汽轮机启动过程中发生摩擦振动的原因,并介绍了为消除摩擦振动在维修方面所采取的措施。
3) vibration friction
振动摩擦
1.
Materials present plastic deformation under cyclical loading because of the influence of vibration friction,and the resilience vs the displacement show the hysteresis trait in a vibration compaction system.
在周期载荷作用下由于振动摩擦作用,物料发生弹塑性变形,从而振动压实系统的弹性恢复力与位移呈现滞回特性。
5) rubbing vibration
摩擦振动
1.
In order to decrease the harmfulness caused by said impact-rubbing to the equipments, the characteristics of impact-rubbing vibration, diagnosis method, and corresponding dispasal scheme have been expounded in detail.
为了减少动静碰磨对设备的危害,详论了由碰磨引起的摩擦振动特征、诊断及相应的处理方案。
2.
It is believed from analysis that the vibration is mainly a rubbing vibration at the position of bearing no.
介绍了湄洲湾电厂1号汽轮机组2号轴承异常轴振的原因,分析认为,振动主要为摩擦振动,部位在2号轴承处,包括轴封、油档及2号轴瓦。
6) frictional vibration
摩擦振动
1.
The effect of unbalance distribution on a large rotor s frictional vibration behavior has been studied.
研究了柔性转子摩擦振动的复杂行为。
2.
Basing this idea,the paper derives the kinematic equations of driven mechanism during the startup motion and gets the critical conditions of the frictional vibration and the frictional mechanism.
得出了液压马达在起动的瞬间不存在摩擦力瞬态突变的结论,并据此对摩擦振动的产生机理加以分析,推导了产生爬行的各种临界条件。
补充资料:摩擦学:滚动摩擦
滚动摩擦
两相互接触的物体有相对滚动或有相对滚动趋势时的摩擦。滚动摩擦的机理不同於滑动摩擦﹐它主要来源於滚动体在接触区域產生弹-塑性变形﹐在以接触点(或线)为中心的接触区内接触压力分布不对称﹐致使支承面的反力N 发生偏心﹐并產生摩擦力F (见图 滚动摩擦示意图 )。用表示法向反力N 到接触点的距离﹐根据力的平衡条件可得
式中为滚动体半径﹔为滚动摩擦係数﹐它的量纲为长度﹐其值与接触面的材料﹑粗糙度﹑温度和湿度等因素有关。
两相互接触的物体有相对滚动或有相对滚动趋势时的摩擦。滚动摩擦的机理不同於滑动摩擦﹐它主要来源於滚动体在接触区域產生弹-塑性变形﹐在以接触点(或线)为中心的接触区内接触压力分布不对称﹐致使支承面的反力N 发生偏心﹐并產生摩擦力F (见图 滚动摩擦示意图 )。用表示法向反力N 到接触点的距离﹐根据力的平衡条件可得
式中为滚动体半径﹔为滚动摩擦係数﹐它的量纲为长度﹐其值与接触面的材料﹑粗糙度﹑温度和湿度等因素有关。
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参考词条