振动测试系统在动力学参数测试中的应用

Application of Vibration Testing System in Dynamic Parameters Testing

提出了一种接触系统结合面的动力学参数测试方法。该方法基于单自由度强迫非共振法,采用振动测试系统进行谐波激励,利用加速度传感器采集激励信号和响应信号,并采用相关分析法对信号进行处理,可得到接触两物体的等效接触刚度和等效接触阻尼。为说明该方法在实际机械系统动力学分析中的应用,给出了2个应用案例,即O型橡胶圈柔性支撑系统和"锭轴-卷装-接触辊"系统的动力学参数实验测试。该方法为复杂的刚-柔耦合接触系统提供了一种测试的新方法。

This paper presents a method for testing the dynamic parameters of the contact system. The method is based on the single-degree-of-freedom forced non-resonance method,the vibration test system is used for harmonic excitation,the acceleration sensor is used to collect the excitation signal and the response signal,and the correlation analysis method is used to process the signal,so that the equivalent contact stiffness of the two objects can be obtained,as well as the equivalent contact damping coefficient. In order to illustrate the application of this method in the analysis of actual mechanical system dynamics,two application cases are given. They are to test dynamic parameters of the O-ring rubber flexible support system and the "spindle-package-roller "system. This method provides a new way for experimental testing of complex rigid-flexible coupling contact systems.