全程悬浮气动平衡器密封及摩擦特性研究
|
摘要
对于气动设备而言,密封性能好坏直接影响其工作性能,密封圈与气缸之间摩擦特性影响活塞往复运动的平稳性,在ANSYS有限元分析软件中建立O形密封圈与气缸接触的二维轴对称有限元分析模型,分别对O形密封圈静密封和动密封性能进行研究,得出预压缩率、工作介质压力、摩擦因数对密封性能的影响规律。搭建摩擦力特性测试实验平台,分别对最大静摩擦力、空载时动摩擦力、加载时动摩擦力的特性进行了实验测试,得出工作介质压力和运动速度对摩擦特性的影响规律。
As to pneumatic devices,the sealing performance directly affects its working,and the friction characteristics between seal ring and cylinder affect stability of reciprocated movement of the piston. Two dimensional( 2D) axisymmetric finite element analysis( FEA) contact model was built in ANSYS software,and the static and dynamic seal performance of O-ring with cylinder were studied separately. The effects law of precompression rate,working medium pressure and friction coefficient on sealing performance were obtained. Builting the friction characteristics test experiment platform,making characteristics test of the maximum static friction force,dynamic friction under no-load,dynamic friction under load,the effects law of working medium pressure and velocity on the friction characteristics were obtained.
As to pneumatic devices,the sealing performance directly affects its working,and the friction characteristics between seal ring and cylinder affect stability of reciprocated movement of the piston. Two dimensional( 2D) axisymmetric finite element analysis( FEA) contact model was built in ANSYS software,and the static and dynamic seal performance of O-ring with cylinder were studied separately. The effects law of precompression rate,working medium pressure and friction coefficient on sealing performance were obtained. Builting the friction characteristics test experiment platform,making characteristics test of the maximum static friction force,dynamic friction under no-load,dynamic friction under load,the effects law of working medium pressure and velocity on the friction characteristics were obtained.
引文
[1]孙玉杰,温彦,李步明.智能调压气动起重设备控制系统设计[J].机床与液压,2017,45(8):100-101.SUN Y J,WEN Y,LI B M. The Design of Intelligent Pressure Regulating Control System of Pneumatic Lifting Equipment[J]. Machine Tool&Hydraulics,2017,45(8):100-101.
[2]马春红,白少先,康盼.氟橡胶O形圈低压气体密封黏滞摩擦特性实验[J].摩擦学学报,2014(2):160-164.MA C H,BAI S X,KANG P. Experiment of Viscous Friction Characteristics of Fluorous Rubber O-rings at Low Gas Seal Pressure[J].Tribology,2014(2):160-164.
[3]纪军.气缸O形圈密封及摩擦特性的研究[D].哈尔滨:哈尔滨工业大学,2015.
[4]吴琼,索双富.丁腈橡胶O形圈往复密封性能试验研究[J].润滑与密封,2012,37(2):29-33.WU Q,SUO S F.Experimental Study of Reciprocating Sealing Performance of Nitrile Rubber O-ring[J]. Lubrication Engineering,2012,37(2):29-33.
[5]陈家兑,谢庆生,王自勤,等.液压式配气系统O型密封圈动密封特性分析[J].润滑与密封,2014,39(11):63-68.CHEN J D,XIE Q S,WANG Z Q. Analysis of Dynamic Sealing Characteristics of O-ring in Hydraulic Valve System[J].Lubrication Engineering,2014,39(11):63-68.
[6]关文锦,杜群贵,刘丕群.橡胶O形圈密封性能的有限元分析[J].润滑与密封,2012,37(6):60-64.GUAN W J,DU Q G,LIU P Q. Finite Element Analysis of the Sealing Performance of Rubber O-ring[J]. Lubrication Engineering,2012,37(6):60-64.
[7]BELFORTE G,BERTETTO A M,MAZZA L. Test Rig for Friction Force Measurements in Pneumatic Components and Seals[C]//Proceedings of the Institution of Mechanical Engineers,Part J:Journal of Engineering Tribology,2013,227(1):43-59.
[8]黄乐,贾晓红,郭飞,等.基于有限元分析方法的Y形圈性能优化设计[J].润滑与密封,2014,39(4):83-88.HUANG L,JIA X H,GUO F,et al. Optimization Design of Y-Sealing Ring Based on Finite Element Analysis[J].Lubrication Engineering,2014,39(4):83-88.
[2]马春红,白少先,康盼.氟橡胶O形圈低压气体密封黏滞摩擦特性实验[J].摩擦学学报,2014(2):160-164.MA C H,BAI S X,KANG P. Experiment of Viscous Friction Characteristics of Fluorous Rubber O-rings at Low Gas Seal Pressure[J].Tribology,2014(2):160-164.
[3]纪军.气缸O形圈密封及摩擦特性的研究[D].哈尔滨:哈尔滨工业大学,2015.
[4]吴琼,索双富.丁腈橡胶O形圈往复密封性能试验研究[J].润滑与密封,2012,37(2):29-33.WU Q,SUO S F.Experimental Study of Reciprocating Sealing Performance of Nitrile Rubber O-ring[J]. Lubrication Engineering,2012,37(2):29-33.
[5]陈家兑,谢庆生,王自勤,等.液压式配气系统O型密封圈动密封特性分析[J].润滑与密封,2014,39(11):63-68.CHEN J D,XIE Q S,WANG Z Q. Analysis of Dynamic Sealing Characteristics of O-ring in Hydraulic Valve System[J].Lubrication Engineering,2014,39(11):63-68.
[6]关文锦,杜群贵,刘丕群.橡胶O形圈密封性能的有限元分析[J].润滑与密封,2012,37(6):60-64.GUAN W J,DU Q G,LIU P Q. Finite Element Analysis of the Sealing Performance of Rubber O-ring[J]. Lubrication Engineering,2012,37(6):60-64.
[7]BELFORTE G,BERTETTO A M,MAZZA L. Test Rig for Friction Force Measurements in Pneumatic Components and Seals[C]//Proceedings of the Institution of Mechanical Engineers,Part J:Journal of Engineering Tribology,2013,227(1):43-59.
[8]黄乐,贾晓红,郭飞,等.基于有限元分析方法的Y形圈性能优化设计[J].润滑与密封,2014,39(4):83-88.HUANG L,JIA X H,GUO F,et al. Optimization Design of Y-Sealing Ring Based on Finite Element Analysis[J].Lubrication Engineering,2014,39(4):83-88.