HyperMesh四辊可逆式热轧轧机振动分析
关键词：四辊式热压机 振动分析 三文有限元法 力学建模
毕业论文设计说明书外文摘要
Title Vibration Analysis of Four Roll Reversing Hot Rolling Mill
Abstract
Four-roll reversing hot rolling mill of the hot-rolled coil plant structure is relatively complex, we have been found that after the work roll is less than 640 mm, the mill cause abnormal vibration and the work roll can't use normal , caused a mass of waste. The vibration is suspected to be caused by deformation of roll supporting roller bearing caused by contact, it is possible that the vibration frequency of the change. To study the vibration characteristics of rolling mill systems. This subject topic research, put to use the finite element method, through the PROE and HyperMesh discrete structure modeling and grid, using three dimensional unit and mechanics model, the four high reversing rolling mill system vibration characteristics were analyzed, and research the change of the rolling mill vibration characteristics is a cause of different reward vibration.
Keywords: four roller hot-pressing machine vibration analysis three-dimensional finite element method mechanics modeling
目 次
1 绪论 II
1．1 选题的目的和意义 II
1．2 本文的具体研究内容 II
1．3 机座振动国内外研究现状 III
2 研究过程理论简介 V
2．1 有限元单元法的基本思想 V
2．2 结构离散化 V
2．3 HyperMesh简介 V
3 几种因素对振动的影响 VI
3．1 振动微分方程建立 VI
3．2 轧制力对振动的影响 IX
3．3 张力对振动的影响 IX
4 建立模型与离散化 XII
4．1 建立模型 XII
4．2 离散化 XIV
4．3 施加约束、载荷及设置参数 XVI
4．5 本章小结 XVII
5 模态分析及其云图 XVIII
5．1 计算模型振动固有频率 XVIII
5．2 轧机变形结果图 XXI
5．3 轧机各处应力图 XXIV
5．4 本章小结 XXVII
结 论 XXVIII
致 谢 XXIX
参考文献XXX
1 绪论
1．1 选题的目的和意义
从20世纪80年代到现在，轧钢技术在我国得到了迅猛发展，近年我国的轧材产量已跃居世界第一的位置。轧钢机作为钢铁轧制的重要工具，其合理的开发与研制已成为推进钢铁工业发展的重大副产业。只有合理的开发出高性能的钢铁轧制工具，才能推进钢铁轧制工艺发展，并轧制出具有良好的综合力学性能、质量稳定的钢铁材料，才能有效节地省能源从而提高生产效率和创造经济效益。