电动振动台动圈的结构动态特性分析  

Analysis of structural dynamic characteristics of armature in electrodynamic shaker

作　　者：崔志磊[1] 王金娥[2] 夏天凉[2] 

机构地区：[1]苏州市职业大学计算机系,江苏苏州215104 [2]苏州大学机电工程学院,江苏苏州215021

出　　处：《兰州理工大学学报》2012年第5期29-32,共4页Journal of Lanzhou University of Technology

摘　　要：为了提高电动振动台的工作性能,建立电动振动台动圈的有限元模型,确立其边界条件,通过计算动圈的各阶模态,分析其动态特性,获得动圈的一阶轴向共振频率并进行实验验证.结果表明,动圈的结构及材料决定动圈一阶轴向共振频率的高低,动圈所选材料的比刚度越大越好;加强筋可以增强动圈的刚性.In order to improve the performances of the electrodynamic shaker armature,the finite element model of the armature was established and the boundary conditions were defined.By means of computing the armature modes of different orders,its dynamic characteristics.With the aid of the modals analysis,the first axial modal of the armature were obtained,and the validity were analyzed,so that its first-order axial resonance frequency was obtained and verified by test.The result showed that the structure and material of the armature would decide the magnitude of that resonance frequency,and the larger the specific rigidity of the armature material.This could be done by adding reinforcing ribs to the armature.

关 键 词：电动振动台 动圈 模态 动态特性 

分 类 号：TH122[机械工程—机械设计及理论]