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damping vibration     
相关语句
  阻尼振动
     Parameters influenced analysis of MR-TMD structural damping vibration system
     MR-TMD结构阻尼振动系统的参数影响分析
短句来源
     The application of digital camera in studying damping vibration
     数码相机在研究阻尼振动中的应用
短句来源
     THE STUDY OF DAMPING VIBRATION IN COMPOUND AUTOMOBILE PLATES
     汽车用复合钢板阻尼振动研究
短句来源
     The analysis result indicates that the damping vibration frequency of the system is 0.825 Hz, and the detecting circuit for accelerations should have a sampling time interval of 4 s.
     随后对该加速度计的静电悬浮支承系统进行了振动学分析 ,采用 1atm的空气阻尼 ,得出系统的阻尼振动频率为 0 .82 5 Hz,输出采样间隔为 4 s。
短句来源
     On this basis, the active damping vibration control model is presented.
     在此基础上,给出了主动阻尼振动控制模型。
短句来源
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  阻尼减振
     Nonlinear damping vibration control of construction machineary high-speed mechanims
     工程机械高速机构的非线性阻尼减振
短句来源
     The damping vibration isolating characteristic affection on the reinforcement content of the coating materical was studied by means of the cantilever beam method.
     利用悬臂梁法研究该阻尼涂料中增强体的含量对其阻尼减振特性的影响 .
短句来源
     Based on experimental research of porous elastic road surface (PERS) in Japan, the noise reduction properties and mechanism are analyzed from porous absorption and damping vibration.
     结合多孔弹性路面的试验研究,从多孔吸声和阻尼减振两个角度分析了其降噪机理和性能。
短句来源
  阻尼隔
     A study was carried out on the problems of nonlinear damping recognition of metal rubber dry frictional damping vibration isolation system with single degree of freedom.
     针对金属橡胶单自由度干摩擦阻尼隔振系统的非线性阻尼识别问题进行了研究。
短句来源
     An introduction to the design and test of the first building that uses asphalt damping vibration isolation cushion
     沥青阻尼隔震垫建筑设计与测试介绍
短句来源
  阻尼振动的
     Analysis and Experimental Study on the Frequency Characters of the Absorbed Mechanical Damping Vibration by a Damping Absorber
     阻尼吸振器吸收机械阻尼振动的频率特性分析与试验研究
短句来源
     A way of studying the main feature and motion laws of the damping vibration by the digital camera is introduced.
     介绍一种采用数码相机来研究阻尼振动的特性参数及其运动规律的方法.
短句来源
     The H-CFL is generally composed of 28 lamellae, but the intercostal membrane is gradually thinned and at the concave end it has about 6 lamellae; it forms a rigid-soft structure suitable for damping vibration of the long ribs.
     H-CFL通常为28层,而肋间膜逐渐变薄,凹端约为6层,形成适合于长肋阻尼振动的刚-柔结构。
短句来源
     Based on the analysis the vibration frequency characters of the two freedom degrees and double damping spring vibrator system,the performances that mechanical damping vibration was absorbed by a damping dynamic damper have been approached,and analysed to choose on the parameters of damper.
     从两自由度双阻尼弹簧振子振动系统的振动频率特性分析入手,探讨了用阻尼吸振器吸收机械阻尼振动的性能,并对阻尼吸振器参数的选择作了分析。
短句来源
     The thickened section in long ribs is a chitinous body extended, concentrated and thickened by lamellae of the H-CFL, and its abdominal end forms a curved "joint"-shaped structure suitable for damping vibration.
     长肋加厚段由H-CFL的片层伸延、加密和增厚而成的几丁质体,共腹端形成适合于阻尼振动的弧形“关节”状节构。
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      damping vibration
    The normalization model shows the actual physical characteristics of the oil damping vibration isolator by considering quadratic damping, viscous damping, Coulomb damping, and nonlinear spring forces.
          
    The structure of the oil damping vibration isolator can achieve circulating oil damping function with an inner tube and an outer tube (some orifices are manufactured on upside and underside of the inner tube).
          
    A micro-oil damping vibration isolator is designed and manufactured through coupling the oil and spring by ingenious tactics.
          
    The general solutions for the free vibration of underdamping, critical damp and overdamping of composite laminates are given simply in terms of the linear damping vibration theory.
          
    In a practical example, such as damping vibration at the engine mounting of a large road vehicle, constraints limit the choice of actuator.
          


    The subject discusses three types of nonlinear fluid control systems and linearization method of nonlinearity.Stability, symmetry self-vibration and damping vibration are also presented in this paper.

    本文讨论了三类非线性流体控制系统以及非线性的线性化方法。文中还讨论了稳定性、对称自振与衰减振荡。

    In the past, a lot of researches were done on the free vibration of pier with deck supported on open pilings, subjected to the action of ship impact, yet all these studies were only referred to the free vibration field without considering the effect of damping. Practically, any vibration of the structure is bound to be influenced by damping. The structural free vibration is generally decreased under the influence of damping Therefore, any negligence of damping is unreasonable and improper.In this report, we...

    In the past, a lot of researches were done on the free vibration of pier with deck supported on open pilings, subjected to the action of ship impact, yet all these studies were only referred to the free vibration field without considering the effect of damping. Practically, any vibration of the structure is bound to be influenced by damping. The structural free vibration is generally decreased under the influence of damping Therefore, any negligence of damping is unreasonable and improper.In this report, we propose that, in ordinary condition, this problem may be tackled as the damping vibration with three degrees of freedom in a horizontal plane of piling deck. For the solution of the problem, a series of formulae are derived by the method of decomposing vibration mode. Some preliminary conclusions are drawn. Analysis of computated results offers substantial support to the conclusion.

    国内、外对于高桩码头结构在船舶撞击下的自由振动问题,虽然已有不少研究,但是,所有理论上的研究都是限于在无阻尼振动的前提下进行的。而实际上各种结构的任何振动均不同程度地受着阻尼的影响,以致结构的自由振动一般形成衰减振动,这样忽视阻尼作用就不够合理,也与实际不符合。因此,本文特建议将此问题作为桩台平面三个自由度的阻尼振动问题来研究,并推导了振型分解法的一般性计算公式和简化公式。文末通过对算例结果的分析,得出了初步结论。

    Reducing drilling stem vibration can evidently better the economical benefit in drilling. The mechanical model of drilling rig-drilling stem vibration absorber system is de fined and the motion differential equation is set up in this paper. Through a lot of calculations the numerical values are obtained, which represent the effects of the length of drill collar string and the installing position of a vibration absorber on longitudinal vibrauon performance of the drilling stem. It is found that...

    Reducing drilling stem vibration can evidently better the economical benefit in drilling. The mechanical model of drilling rig-drilling stem vibration absorber system is de fined and the motion differential equation is set up in this paper. Through a lot of calculations the numerical values are obtained, which represent the effects of the length of drill collar string and the installing position of a vibration absorber on longitudinal vibrauon performance of the drilling stem. It is found that variation of drill collar string length exerts an evident influence only on the low natural frequency of the system's longitudinal vibration, and the increase of the drilling collar string length leads to greater vibration displacement, it's possible for drilling stem's natural longitudinal and torsional vibration to be excited at the same time. It is proved that the best results can be obtained when the vibration absorber is installed between the rig and the drilling stem, because in this way the critical rotary speed of the rotary tabk is reduced and the vibration displacement of all parts are decreased; besides, a way of using elastisity-damping-vibration absorber with a changing rigidity has been shown. In this paper, all kinds of absorbers are compared for their merits and demerits.

    本文建立了钻机—钻柱—减震器振动系统的力学模型及其运动方程,求得了钻铤柱不同长度和减震器不同位置对钻柱纵振影响的数值,因而发现:钻铤柱长度的改变仅对系统纵振的固有低频产生明显影响;钻柱振动位移亦随钻铤拄长度增加而增加;还发现钻柱固有纵振与固有扭振具有同时激励的可能;证实了减震器的效果以安装于钻机与钻柱之间较为理想,它既降低了转盘临界转速,又减小了各部分振动位移。最后指明了使用变刚度弹力阻尼减震器的方向.

     
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