1. 西安交通大学机械结构强度与振动国家重点实验室,西安,710049
2. 西安交通大学航天航空学院,西安,710049
网络首发:2018-07-10,
纸质出版:2018
移动端阅览
何红 1, 徐自力 1, 王存俊 1, 等. 盘式拉杆转子非连续摩擦接触界面功能失效机理研究[J]. 西安交通大学学报, 2018,52(7):130-138.
Failure Mechanism of Discontinuous Friction Contact Interfaces of Disk-Type Rod Fastening Rotors[J]. 2018, 52(7): 130-138.
何红 1, 徐自力 1, 王存俊 1, 等. 盘式拉杆转子非连续摩擦接触界面功能失效机理研究[J]. 西安交通大学学报, 2018,52(7):130-138. DOI: 10.7652/xjtuxb201807019.
Failure Mechanism of Discontinuous Friction Contact Interfaces of Disk-Type Rod Fastening Rotors[J]. 2018, 52(7): 130-138. DOI: 10.7652/xjtuxb201807019.
盘式拉杆转子的轮盘间采用非连续界面连接
当界面由于大载荷作用或者拉杆松弛发生滑移或脱开时
会导致转子无法正常工作
甚至发生严重事故。为此
采用三维接触有限元法
计算了不同预紧力下复杂载荷作用时拉杆转子非连续界面的接触状态、应力和变形
分析了拉杆转子非连续界面的功能失效模式、极限承载能力及预紧力对失效临界点的影响。结果表明:在预紧力确定的情况下
非连续轮盘接触界面承受扭矩、剪力、弯矩等载荷的能力存在临界值
超过载荷临界值则界面发生功能失效
且对应不同的失效模式
分别为周向滑移、侧向滑移、顶端张口型失效模式; 轮盘在承受大扭矩作用时
接触界面存在“扭转屈服”现象
即扭转角骤增
刚度骤降
转子结构抵抗变形能力骤降
无法继续传递扭矩
界面发生承载失效; 弯矩、剪力载荷的作用会显著降低非连续轮盘承扭的极限能力。
The disks of rod fastening rotor are joined by discontinuous interfaces. Rotor accidents often occur when the interface slips or disengages due to the large load or laxity of the rod. In this study
the 3d contact finite element method is adopted to calculate the contact state
stress and deformation of the discontinuous interface under complex loads and different pre-tightening forces. The influences of failure mode
ultimate bearing capacity and preload on the critical failure point of the interfaces are analyzed. The results show that the interface has limiting values to bear torque
shear or bending moment under certain pre-tightening forces. The functional failure happens when the actual load exceeds the limiting value. There exist three different failure modes
i.e.
circumferential slip mode
lateral slip mode and top opening failure mode
corresponding to different load conditions. A “torsional yield” phenomenon may occur when a large torque loading is applied on the disks
which means occurrence of rapid increase of torsional angel or sudden drop of rotor stiffness. As a result
the rotor cannot undertake torque
and hence the failure of interface occurs. In addition
bending moment and shear load may also significantly reduce the critical load of the discontinuous disks.
尹泽勇, 郑祺选. 端齿连接转子轴向预紧力的确定 [J]. 航空动力学报, 1996(4): 355-357.
YIN Zeyong, ZHENG Qixuan. Determination of axial pretightening force of rotor with end face connection [J]. Chinese Journal of Aerospace Power, 1996(4): 355-357.
胡柏安, 尹泽勇, 徐友良. 两段预紧的端齿连接转子轴向预紧力的确定 [J]. 机械强度, 1999(4): 274-277.
HU Boan, YIN Zeyong, XU Youliang. Determination of axial preloads of rotor with curvic couplings pretightened into two segments [J]. Journal of Mechanical Strength, 1999(4): 274-277.
张青雷, 陈堰芳, 程义悦. 分布式拉杆转子轴向预紧力的确定 [J]. 热能动力工程, 2014(5): 477-482.
ZHANG Qinglei, CHEN Yanfang, CHENG Yiyue. Determination of axial pretightening force of distributed tie rod rotor [J]. Journal of Engineering for Thermal Energy and Power, 2014(5): 477-482.
李辉光, 刘恒, 虞烈. 周向均布拉杆转子预紧力的确定 [J]. 航空动力学报, 2011, 26(12): 2791-2797.
LI Huiguang, LIU Heng, YU Lie. Determination of preload force of circumferential distributed rod fastening rotor [J]. Chinese Journal of Aerospace Power, 2011, 26(12): 2791-2797.
何鹏, 刘占生, 黄飞淋, 等. 拉杆转子临界转速随拉紧力变化规律试验 [J]. 振动、测试与诊断, 2014, 34(4): 644-649.
HE Peng, LIU Zhansheng, HUANG Feilin, et al. Test of critical speed of tie rod rotor with tension force [J]. Journal of Vibration, Measurement Diagnosis, 2014, 34(4): 644-649.
卢明剑, 耿海鹏, 徐国徽, 等. 预紧饱和下盘式周向拉杆转子-轴承系统动力学特性分析及实验研究 [J]. 振动工程学报, 2014, 27(1): 111-117.
LU Mingjian, GENG Haipeng, XU Guohui, et al. Analytical and experimental study on dynamic characters of rod-fastening rotor-bearing system under saturated pretension [J]. Journal of Vibration Engineering, 2014, 27(1): 111-117.
李辉光, 刘恒, 虞烈. 粗糙机械结合面的接触刚度研究 [J]. 西安交通大学学报, 2011, 45(6): 69-74.
LI Huiguang, LIU Heng, YU Lie. Contact stiffness of rough mechanical joint surface [J]. Journal of Xi'an Jiaotong University, 2011, 45(6): 69-74.
SELLGREN U, BJÖRKLUND S, ANDERSSON S. A finite element-based model of normal contact between rough surfaces [J]. Wear, 2003, 254(11): 1180-1188.
MAJUMDAR A, BHUSHAN B. Fractal model of elastic-plastic contact between rough surfaces [J]. Journal of Tribology, 1991, 113(1): 1-11.
全雄伟, 杨毅, 徐自力. 重型燃气轮机拉杆转子接触界面动态参数识别 [C]∥中国力学大会2011暨钱学森诞辰100周年纪念大会论文集. 北京: 中国力学学会, 2011: 36-44.
卢明剑, 孙岩桦, 周健, 等. 拉杆组合转子的刚度修正及动力学建模 [J]. 航空动力学报, 2016, 31(9): 2203-2209.
LU Mingjian, SUN Yanhua, ZHOU Jian, et al. Stiffness modification and dynamic modeling of a rod fastening rotor [J]. Chinese Journal of Aerospace Power, 2016, 31(9): 2203-2209.
高进, 袁奇, 李浦, 等. 燃气轮机拉杆式转子的刚度模化和模型修正方法 [J]. 西安交通大学学报, 2013, 47(5): 18-23.
GAO Jin, YUAN Qi, LI Pu, et al. Methods for modeling stiffness and model updating for the rod-fastened rotor of gas turbine [J]. Journal of Xi'an Jiaotong University, 2013, 47(5): 18-23.
李浦, 袁奇, 高进, 等. 轮盘端面齿连接的周向拉杆转子刚度研究 [J]. 航空动力学报, 2013, 28(7): 1618-1623.
LI Fu, YUAN Qi, GAO Jin, et al. Investigation on stiffness of circumferential distributed tie-rod rotor with curvic couplings of trochal disk [J]. Chinese Journal of Aerospace Power, 2013, 28(7): 1618-1623.
王正. 转动机械的转子动力学设计 [M]. 北京: 清华大学出版社, 2015: 124.
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