高速重载滚滑轴承动态有限元对比分析
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摘要
针对高速重载工况下圆柱滚子轴承容易发生启动困难和滚子运行卡死现象,以新型滚滑轴承和圆柱滚子轴承为研究对象,考虑重载情况下材料的塑性变形,建立轴承的全柔性接触非线性有限元模型,仿真分析了两类轴承启动过程和稳态运转过程中内部动态应力的变化特点和规律。结果表明:高速重载工况下圆柱滚子轴承启动应力高,运行过程中容易出现滚子卡死现象,而滚滑轴承启动应力低,运行平稳,应力分布均匀,具有更好的动态性能;滚滑轴承内圈平均应力大于滚子轴承内圈平均应力;由于滚子与滑块的协同承载作用,使得滚滑轴承的滚子应力水平下降,提高了滚子的疲劳寿命。
For high-speed heavy-duty conditions, cylindrical roller bearings are prone to start-up difficulties and roller jamming. New rolling bearings and cylindrical roller bearings are the research objects. Considering the plastic deformation of materials under heavy load conditions, the bearing is established. The fully flexible contact nonlinear finite element model is used to simulate and analyze the characteristics and laws of internal dynamic stress changes during the starting process and steady state operation of the two types of bearings. The results show that the cylindrical roller bearing has high starting stress under high speed and heavy load conditions, and roller jamming is easy to occur during operation. The rolling bearing has low starting stress, stable operation, uniform stress distribution and better dynamic performance. The average stress of the inner ring of the rolling bearing is larger than the average stress of the inner ring of the roller bearing; due to the synergistic bearing effect of the roller and the slider, the roller stress level of the rolling bearing is lowered, and the fatigue life of the roller is improved.
For high-speed heavy-duty conditions, cylindrical roller bearings are prone to start-up difficulties and roller jamming. New rolling bearings and cylindrical roller bearings are the research objects. Considering the plastic deformation of materials under heavy load conditions, the bearing is established. The fully flexible contact nonlinear finite element model is used to simulate and analyze the characteristics and laws of internal dynamic stress changes during the starting process and steady state operation of the two types of bearings. The results show that the cylindrical roller bearing has high starting stress under high speed and heavy load conditions, and roller jamming is easy to occur during operation. The rolling bearing has low starting stress, stable operation, uniform stress distribution and better dynamic performance. The average stress of the inner ring of the rolling bearing is larger than the average stress of the inner ring of the roller bearing; due to the synergistic bearing effect of the roller and the slider, the roller stress level of the rolling bearing is lowered, and the fatigue life of the roller is improved.
引文
[1] 卢黎明.滚滑轴承及其试验研究[J].轴承,2011(9):14-16.
[2] 卢黎明.循环载荷冲击下滚滑轴承的振动特性[J].机械工程学报,2013,49(5):39-46.
[3] Pinel S,Signer H,Zaretsky E.Design and Operating Characteristics of High-Speed,Small-Bore Cylindrical-Roller Bearings[J].A S L E Transactions,2001,44(1):70-78.
[4] 黄浩,张鹏顺,温建民.高速圆柱滚子轴承的刚度研究[J].中国机械工程,2001,12(11):1245-1247.
[5] Necdet Demirhan,Bahattin Kanber.Stress and Displacement Distributions on Cylindrical Roller Bearing Rings Using FEM[J].Mechanics Based Design of Structures & Machines,2008,36(1):86-102.
[6] 倪艳光,李影,邓四二,等.过载工况下圆柱滚子轴承永久变形量计算[J].河南科技大学学报(自然科学版),2016,37(2):21-25.
[7] 韩传军,李英,张杰,等.牙轮钻头空心圆柱滚子轴承热力耦合分析[J].机械强度,2016(6):1294-1299.
[8] 徐弘毅,张晨辉.基于塑性材料模型的滚动轴承有限元分析[J].机械工程学报,2010,46(11):29-35.
[9] 关猛,王景华,牛清波,等.高速重载轴承的有限元仿真研究[J].合肥工业大学学报(自然科学版),2013,36(5):527-529.
[10] 彭波.高速脉动重载滚动轴承工作特性仿真分析[D].哈尔滨:哈尔滨工业大学,2007.
[11] 彭波,孔文秦,贾磊,等.高速重载滑滚摩擦副表面损伤的力学特性[J].交通运输工程学报,2017,17(3):75-82.
[12] 曾国文.滚滑轴承的力学特性及疲劳寿命分析[D].南昌:华东交通大学,2016.
[13] 庄茁.基于ABAQUS的有限元分析和应用[M].北京:清华大学出版社,2009.
[14] 李淑慧.基于ANSYS的混合陶瓷球轴承有限元分析[D].天津:天津大学,2004.
[15] 张松林.最新轴承手册[M].北京:电子工业出版社,2007.
[2] 卢黎明.循环载荷冲击下滚滑轴承的振动特性[J].机械工程学报,2013,49(5):39-46.
[3] Pinel S,Signer H,Zaretsky E.Design and Operating Characteristics of High-Speed,Small-Bore Cylindrical-Roller Bearings[J].A S L E Transactions,2001,44(1):70-78.
[4] 黄浩,张鹏顺,温建民.高速圆柱滚子轴承的刚度研究[J].中国机械工程,2001,12(11):1245-1247.
[5] Necdet Demirhan,Bahattin Kanber.Stress and Displacement Distributions on Cylindrical Roller Bearing Rings Using FEM[J].Mechanics Based Design of Structures & Machines,2008,36(1):86-102.
[6] 倪艳光,李影,邓四二,等.过载工况下圆柱滚子轴承永久变形量计算[J].河南科技大学学报(自然科学版),2016,37(2):21-25.
[7] 韩传军,李英,张杰,等.牙轮钻头空心圆柱滚子轴承热力耦合分析[J].机械强度,2016(6):1294-1299.
[8] 徐弘毅,张晨辉.基于塑性材料模型的滚动轴承有限元分析[J].机械工程学报,2010,46(11):29-35.
[9] 关猛,王景华,牛清波,等.高速重载轴承的有限元仿真研究[J].合肥工业大学学报(自然科学版),2013,36(5):527-529.
[10] 彭波.高速脉动重载滚动轴承工作特性仿真分析[D].哈尔滨:哈尔滨工业大学,2007.
[11] 彭波,孔文秦,贾磊,等.高速重载滑滚摩擦副表面损伤的力学特性[J].交通运输工程学报,2017,17(3):75-82.
[12] 曾国文.滚滑轴承的力学特性及疲劳寿命分析[D].南昌:华东交通大学,2016.
[13] 庄茁.基于ABAQUS的有限元分析和应用[M].北京:清华大学出版社,2009.
[14] 李淑慧.基于ANSYS的混合陶瓷球轴承有限元分析[D].天津:天津大学,2004.
[15] 张松林.最新轴承手册[M].北京:电子工业出版社,2007.