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板带四辊轧机的三维振动特性

板带四辊轧机的三维振动特性

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

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

doi:
10.3901/JME.2015.19.060
摘要:
针对轧机振动传统的一维或二维的解析模式,给出1580 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。
Abstract:
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.
作者 申光宪 [1] 郑永江 [2]
Author: SHEN Guangxian[1] ZHENG Yongjiang[2]
作者单位
  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; 燕山大学机械工程学院秦皇岛 066004
  2. 燕山大学机械工程学院秦皇岛 066004
期 刊: 机械工程学报 ISTIC EI SCI PKU CSSCI
Journal: Journal of Mechanical Engineering
年,卷(期) 2015, (19)
分类号 TG333
关键词: 板带四辊轧机 知识脉络 振动特性 知识脉络 修正三维多物体传递矩阵法 知识脉络 有限元法 知识脉络
Keywords: plate 4-h rolling mill vibration characteristics modified three-dimensional multi-body transfer matrix method finite element method
机标分类号 TM2 TB5
基金项目 ?教育部博士点基金,秦皇岛科技支撑计划,燕山大学青年教师自主计划研究课题,燕山大学博士基金(B858)资助项目。
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