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为了探明设计可靠的粘性扭振减振器的基础、前提和计算方法,在FVV(内燃机研究协会)的一个试验计划中,根据掌握的大量损坏情况,首先用一种新式的带有封闭作用腔的振动粘度计确定了20～300赫范围内恒定的剪切梯度振幅下硅油的材料特性值(即谐波交变剪切下的损失模量和存储模量)及其与温度的关系。在柏林工业大学新开发的减振器试验台上,用具有弹性定心惯性环的试验减振器对这种材料特性值的可靠性进行了检验,减振剂形变角振幅在tanv=3以下,在旋转时对温度进行监测,减振剂的阻尼系数和耦合弹性刚度作为组合值分量测量。这一测量也证明了,可以用所获得的硅油参数来对减振器的动态特性进行可靠的预算。为了方便预算,可用直观的工作图解;从中可以看出,在减振器调整最佳的情况下,壳体或曲轴端部法兰振动角振幅在第一次近似时相当于法兰和减振器惯性环的相对振动角振幅。减振器在工作期间的性能可加以控制,最简单、可靠的办法是监测减振器壳体的温度。
In order to find out the basis, premise and calculation method of designing reliable viscous torsional vibration damper, in a pilot program of FVV (Association of Internal Combustion Engine Research), according to a great deal of damage, first, The cavity vibration viscometer determines the material properties of the silicone oil (ie, the loss modulus and the storage modulus under harmonic alternating shear) at a constant shear gradient amplitude in the range of 20 to 300 Hz and its relation to temperature. The reliability of this material property value was tested on a newly developed shock absorber test stand at the Technical University of Berlin using a test damper with an elastic centering ring of inertia, , The temperature is monitored during rotation, the damping coefficient of the damping agent and the coupled elastic stiffness are measured as a combined value component. This measurement also proves that the dynamic properties of the shock absorber can be reliably budgeted with the obtained silicone oil parameters. In order to facilitate the budget, an intuitive working diagram can be used; from which it can be seen that with the best adjustment of the shock absorber, the amplitude of the flange vibration angle at the end of the housing or crankshaft corresponds to the flange and damping at the first approximation Relative inertia ring inertia ring vibration amplitude. Damper performance during operation can be controlled, the simplest and most reliable way is to monitor the shock absorber housing temperature.