板带四辊轧机的三维振动特性  

Three-dimensional Vibration Characteristic of 4-h Plate Rolling Mill

作　　者：申光宪[1,2] 郑永江[2] 

机构地区：[1]燕山大学国家冷轧板带装备及工艺工程技术研究中心,秦皇岛066004 [2]燕山大学机械工程学院,秦皇岛066004

出　　处：《机械工程学报》2015年第19期60-65,共6页Journal of Mechanical Engineering

基　　金：教育部博士点基金(20111333110001);秦皇岛科技支撑计划(201401A022);燕山大学青年教师自主计划研究课题(14LGB005);燕山大学博士基金(B858)资助项目

摘　　要：针对轧机振动传统的一维或二维的解析模式,给出1 580 mm四辊轧机振动的三维(空间)振动解析模式及其振动特性-固有频率和振型。在四辊轧机振动解析中被忽略的'不得已'间隙,必须在辊系结构予以考虑。利用修正三维多物体传递矩阵法辅之有限元法对轧机轧辊进行包含3个位移3个转角6个自由度的三维振动数值解析。数值模拟结果显示,四辊轧机考虑阻尼作用后的固有频率(复频率虚部)与现场测试频率基本吻合;'不得已'间隙导致轧机系统出现危险低频率,且振型为含有水平、交叉及摇摆等包含多个单一振型的复合振型。For the traditional one-dimensional or two-dimensional analysis mode of the rolling mill vibration,the three-dimensional（spatial） vibration analysis mode and its vibration characteristics（vibration frequency and mode shape） of the 1 580 mm 4-h plate rolling mill are given. The required clearance in the roll system structure should be considered during the mill vibration analysis. The modified three-dimensional multi-body transfer matrix method（MTM-TMM） and the finite element method（FEM） are used to complete the three-dimensional vibration（6 degrees of freedom-3 linear displacements and 3 angular displacements） numerical analysis of the rolls. The vibration frequencies obtained in numerical simulation demonstrate that the frequency（imaginary part of complex frequency） of the 4-h mill basically agree with that measured in the field test. The required clearance leads to the appearance of dangerous low frequencies. The mode shape is a complex mode shape that is composed of some single mode shape of the horizontal,cross and swinging vibration.

关 键 词：板带四辊轧机 振动特性 修正三维多物体传递矩阵法 有限元法 

分 类 号：TG333[金属学及工艺—金属压力加工]