大型热矿振动筛动态特性的有限元分析

Analyses of Finite Element for Dynamic Characteristics of Hot Sinter Screen

以３．１ｍ×８．３４ｍ的大型热矿振动筛为算例，采用有限元的理论和方法，对其固有振型、固有频率及动应力进行了分析，得到了大型热矿振动筛的动态特性及其应力的分布规律，并采用做模型对比的方法，对结构中由板壳焊接而成的大截面梁的单元类型的选择提出了建议．

With finite element method,dynamic characteristics of hot sinter screen,such as natural frequenoy,natural mode and dynamic stress,are analysed. An A sensible advisement is given by contrast method in choosing element type of hot sinter screen.It′s more advisable to choose plate/shell element than to choose beam element welded of plate/shell beam of hot sinter screen. Meanwhile,a conclusion is reached that bigger dynamic stress is mostly located near exciters and that bending movements occur at lower frequency.