基于试验模态的高频振动筛动态特性分析

    Analysis of dynamic characteristics of high-frequency vibrating screen based on modal experiments

    • 摘要: 采用力锤单点激励的方法,对HFVB1836高频振动筛进行了数据采集;利用Polymax方法进行模态参数识别,获得高频振动筛的6阶模态参数;试验模态分析结果表明,在筛机工作频率附近存在两阶弹性模态,可能会对筛机的正常工作产生不利影响,需要对筛机侧板重新进行优化设计或动力学参数修改;采用MAC值作为模态判定准则,对试验模态分析得到的模态参数进行验证,验证结果表明模态试验具有较高的可信度。

       

      Abstract: The HFVB1836 HIGH-frequency vibrating screen is excited using single-point hammering method and the data is collected for analysis. After recognition of the modal parameters using Polymax method, six orders of modal parameters are obtained. Experimental modal analysis shows that: there exist two orders of elastic modals near the working frequency of the screen, which may adversely affect the normal operation of the screen; and the screen′s side plates need to be optimized in design or have its dynamic parameters modified. The modal parameters obtained through experimental analysis are verified with the MAC values as the criteria. The verified result shows the modal experiment is relatively high in confidence.

       

    /

    返回文章
    返回