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转炉用扭力杆系统振动理论研究
引用本文:吴林峰,王文. 转炉用扭力杆系统振动理论研究[J]. 振动与冲击, 2017, 36(6): 97-101
作者姓名:吴林峰  王文
作者单位:华北水利水电大学 机械学院,郑州 450008)
摘    要:扭力杆系统的动态特性对转炉设备工作的可靠性有着重要影响,研究其振动频率和阵型是设备自主创新的关键技术之一。综合考虑扭力杆系统实际结构组成,提出了均质杆和集中质量杆一端铰支另一端简支反对称弯曲振动梁、均质杆和集中质量杆一端固支另一端简支反对称弯曲振动梁等四种振动模型。以某厂150 t氧气顶吹转炉扭力杆系统为例进行了理论计算。结果表明,扭力杆系统振动模型采用集中质量杆一端固支和一端简支反对称弯曲振动梁模型更合理。并用有限元法对其正确性进行了验证,两种方法的计算结果吻合,都可以对扭力杆系统进行研究,但是理论解更为简单方便,便于工程技术人员直接引用,为指导工程实际设计和生产提供了理论基础。

关 键 词:转炉   扭力杆系统   振动梁模型   理论解   有限元解 

Vibration analysis on the torsion bar system in convertors
WU Linfeng,WANG Wen. Vibration analysis on the torsion bar system in convertors[J]. Journal of Vibration and Shock, 2017, 36(6): 97-101
Authors:WU Linfeng  WANG Wen
Affiliation:School of Mechanical Engineering,North China University of Water Resources and Electric Power,Zhengzhou450008,China
Abstract:The dynamic characteristics of torsion bar system have an important impact on the reliability of convertors,and its natural frequencies and mode shapes are consequently crucial for the independent innovation of the device.Four models were proposed for the torsion bar system.They are  antisymmetric bending vibration models made up of homogeneous beam or concentrated mass beam with different boundary conditions: hinged at one end and simply supported at the other,or clamped at one end and simply supported at the other.A 150-ton Oxygen Top Convertor in a certain factory was taken as an example for the study using the four models proposed.The results show that the model of concentrated mass beam which is clamped at one end and simply supported at the other is more reasonable than the other three.The analytical solution was verified by the finite element method.The analytical results and numerical results are in good agreement and both methods are valid in the design,whereas the analytical method is more convenient and subsequently more suitable for engineering applications.The results provide a theoretical basis for the design and production of convertors.
Keywords:convertortorsion bar systemvibration beam modeltheoretical solutionfinite element solution
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