hypermesh四辊可逆式热轧轧机辊系振动分析
热轧板卷厂的四辊可逆式热轧轧机的结构较为复杂，已经发现在工作辊小于640mm后，轧机压下出现异常振动，导致工作辊不能正常使用，造成了巨大的浪费。为此，研究轧机辊系振动分析就十分具有必要性，本课题将采用三文建模软件Proe进行建模，然后前处理用hypermesh进行网格划分和加载，最后用ANSYS进行计算，得出结果和进行分析。28847
关键词：四辊轧机 辊系 热轧 振动分析
毕业论文设计说明书外文摘要
Title Four roller reversing hot rolling mill rolls Vibration Analysis
Abstract
With the rapid development of modern industry ,the demand of rolled steel is also growing, the strip surface quality requirements are getting higher,In recent decades, China's demand for rolled steel industry products has been in short supply situation, rolled strip is the most widely rolled product in all sectors of the national economy . Currently, the mill is growing high-speed, large-scale and automation and at the same time, the rolling process has shown a lot of new problems.
Hot rolled coil mill’s four roller reversing hot rolling mill structure is more complex, the AGC abnormal vibration has been found in the work when roll is less than 640mm, resulting in the abnormal work , causing a huge waste. For this reason, vibration analysis of mill rolls has been necessary, this project will use three-dimensional modeling software for modeling, then mesh and load it before treatment, and finally use ANSYS calculation to get the results and do analysis.
Keywords:Four-high mill Rolls Hot-rolled Vibration Analysis
目 录
1 绪论2
1.1课题的背景及意义 2
1.2 国内外研究现状2
1.3 来源及研究的内容2
1.3.1课题来源3
1.3.2 任务及要求3
2 轧机辊系振动基本原理4
2.1.1 单自由度系统的有阻尼自由振动4
2.1.2 多自由度系统的有阻尼自由振动5
2.2 迭代法6
2.3 四辊轧机辊系理论模型7
2.4 四辊轧机优尔自由度模型14
3 四辊轧机建模分析17
3.1 四辊轧机Proe建模17
3.2 四辊轧机网格划分20
3.3 有限元导入25
4结果28
4.1分析33
5 体会33
5.1展望34
致谢35
参考文献36
1 绪论
1.1 课题的背景及意义
在21世纪，工业发展迅速，科技日新月异，国家对轧钢的需求也愈来愈额大，质量要求也越来越高，对于以前有很多技术都是从国外引进的，而我们只负责使用，从而忽略了自身技术的要求，但是随着使用年限的增加和国内对轧钢更高质量的要求，使得我们不得去寻求新的方法去提高质量和技术。