摘要
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.
出处
《东北大学学报(自然科学版)》
EI
CAS
CSCD
北大核心
1997年第3期316-320,共5页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金
关键词
热矿筛
固有频率
有限元
筛分机
hot sinter screen,natural frequency,natura mode,dynamic stress.