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过去在分析振动机械时,往往都把激振力中心或作用线通过质心来计算。但实际上有些机械安装成偏载;有些安装上要求通过质心,但工作时,由于载荷变化,也成偏载。有些由于工艺与结构要求设计成偏载的,如振动放矿机、惯性振动筛、振动台等,有的由于转子不平衡引起的振动也属此种情况。为此,本文将利用复数矩阵方法来分析有阻尼时偏载振动机的响应,它可应用于同类性质的各种机械的动力分析上。本文应用力学模型如下:
In the past in the analysis of vibration machinery, often the center of excitation force or line of action through the center of mass to calculate. However, in fact, some mechanical installation into partial load; some require installation through the center of mass, but work, due to changes in load, but also as partial load. Some due to process and structural requirements designed for partial load, such as vibration mining machine, inertial shaker, shaker, etc., and some due to rotor imbalance caused by vibration is also the case. Therefore, in this paper, the complex matrix method is used to analyze the response of a partially-loaded vibrator with damping. It can be applied to the dynamic analysis of all kinds of machinery of the same kind. In this paper, the mechanical model is as follows: