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.
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.
WU Linfeng，WANG Wen. Vibration analysis on the torsion bar system in convertors. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(6): 97-101.
[1] 吴林峰, 尹晓春. 转炉用变截面自平衡式扭力杆扭转变形的理论计算[J]. 工程力学, 2012, 29(6): 47-51.
Wu Linfeng, Yin Xiaochun. Calculation formala for torsional deformation of self-balanced torsion bar with variable cross-section in convertor [J]. Engineering mechanics, 2012, 29(6): 47-51.
[2] Kisu Lee. A numerical method for dynamic analysis of tracked vehicles of high mobility [J]. Journal of Mechanical Science and Technology, 2000, 14 (10): 1028-1040.
[3] 余杨, 高瞻. 转炉旋转接头扭力杆防旋转装置及有限元分析[J]. 钢铁技术, 2010, (1): 8-12.
Yu Yang, GAO Zhan. Finite element analysis of the anti-rotation device of rotary joint torsion bar in convertor [J]. Iron & Steel Technology , 2010, (1): 8-12.
[4] Barthelat F, Wu Z, Prorok B C, et al. Dynamic torsion testing of nanocrystalline coatings using high-speed photography and digital image correlation [J]. Experimental Mechanics, 2003, 43(3): 331-340.
[5] 刘春节, 王正东. 圆形截面微型扭杆刚度的解析计算[J]. 工程力学, 2009, 26(7): 35-38.
Liu Chunjie, Wang Zhengdong. Analysis of torsion rigidity of micro bars with circular cross section [J]. Engineering Mechanics, 2009, 26(7): 35-38.
[6] 赵燕. 全悬挂转炉扭力杆和耳轴的扭转刚度分析[J]. 北京联合大学学报（自然科学版）, 2012, 26(2): 25-29.
Zhao Yan. Torsion stiffness analysis of torque rod and trunnion for full suspension convertor [J]. Journal of Beijing Union University(Natural Sciences), 2012, 26(2): 25-29.
[7] 张义民, 贺向东, 刘巧玲. 扭杆的可靠性优化设计[J]. 汽车技术, 2002, (5): 5-7.
Zhang Yimin, He Xiangdong, Liu Qiaoling. Reliability design of torsion bar diameter [J]. Automobile Technology, 2002, (5): 5-7.
[8] 郑龙捷. 转炉扭力杆工作过程异常振动原因分析与改进措施[J]. 冶金丛刊, 2013, (5): 37-41.
Zheng Longjie.Analysis on abnormal vibration of torsion bar device during operation and countermeasures [J]. Metallurgical collections, 2013,(5): 37-41.
[9] 齐坚, 陶海银. 国内容量最大的全国产化下悬挂转炉投产成功应用多项中冶赛迪自主技术[J]. 中国钢铁业, 2009, (5): 31.
Qi Jian,Tao Haiyin. The successful application of independent technology CISDI in Hanging converter with the domestic production capacity of the largest one in the national production [J]. CHINA Steel, 2009, (5): 31.
[10] 吴林峰. 转炉托圈和扭力杆的设计理论分析[D]. 南京：南京理工大学，2012.
WU Linfeng. Design theory analysis of converter trunnion ring and torque bar [D]. Nanjing: Nanjing University of Science & Technolog, 2012.
[11] 徐铭陶, 周荣仁, 赵邦义. 振动分析基础讲义[M]. 重庆, 重庆大学力学教研室, 1982.
Xu Mingtao, Zhou Rongren, Zhao Bangyi. Vibration analysis of lectures [M]. Chongqing, Department of Pharmacology, Chongqing University, 1982.
[12] 张阿舟, 诸德超, 姚启航, 等. 振动理论与分析[M]. 北京, 航空工业出版社, 1996.
Zhang Azhou, Zhu Dechao, Yao Qihang, et al. Vibration Theory and Analysis [M]. Beijing, Aviation Industry Press, 1996.
[13] 吴福光, 蔡成武, 徐兆. 振动理论[M]. 北京, 高等教育出版社, 1987.
Wu Fuguang, Cai Chengwu, Xu Zhao. Vibration Theory [M]. Beijing, Higher Education Press, 1987.
[14] Moaveni, S. Finite Element Analysis - Theory and Application with ANSYS (Third Edition) [M]. Beijing, Electronic Industry Press, 2008
