大型香蕉型振动筛静力学及模态分析.pdfVIP

第 40 卷 2012 年第 11 期 本栏目编辑 　 张代瑶 大型香蕉型振动筛静力学及 模态分析 张功学，申晓凯 陕西科技大学机电工程学院　陕西西安　710021 分　摘要：以大型香蕉型振动筛为研究对象，采用 SolidWorks 三维建模软件进行三维建模，将三维模型导 入 ANSYS Workbench 软件对其进行有限元分析，得到在静载荷作用下振动筛的整体应力应变分布云 图；并对整个筛体的动特性进行分析，由模态分析结果得到各阶模态频率和振型图，结合锤击测试试 选 验验证理论分析结果，为振动筛的设计和改进提供必要的理论依据。 关键词：应力应变；模态分析；锤击测试 中图分类号：TD452　　　文献标志码??A　　　文章编号：1001-3954(2012)11-0060-05 Statics and modal analysis of large-scale banana vibrating screen ZHANG Gongxue, SHEN Xiaokai College of Mechanical Electrical Engineering, Shaanxi University of Science Technology, Xian 710021, Shaanxi, China Abstract：A large-scale banana vibrating screen was modeling by using SolidWorks, and then the 3D model was imported into ANSYS Workbench for FEA. The stress and strain distribution of the vibrating screen at static loading was obtained. In addition, the dynamic characteristics of the screen were analyzed also, and frequency and vibration shape of each order of mode were obtained according to modal analysis results. At last, the analysis results were veri? ed through hammering test. The study offered necessary theoretical references for design and improvement of the vibrating screen. Keywords：stress and strain; modal analysis; hammering test 着国民经济的发展，振动筛作为一种选煤设 (1) 对筛体采用等效单元的替代，忽略了各横 随 备正向大型化、自动化、集成化和智能化方向 梁、侧板的加强助以及下横梁纵向支撑梁等结构，降 高速发展，在整个振动筛工作过程中，由于出现越来 低了整个结构的刚度； 越多的静动力学问题，因此，对设备的静动力学特性 (2) 仅采用单纯的理论分析，缺乏试验支持，所