弹簧蓄能密封圈轴对称仿真模型建模方法研究  

A Research on 2-D Axisymmetric Finite Element Model for Spring Energized Seal Ring

作　　者：贾晓红[1] 李坤[1] 

机构地区：[1]清华大学摩擦学国家重点实验室,北京100084

出　　处：《润滑与密封》2015年第11期1-5,共5页Lubrication Engineering

基　　金：国家科技重大专项(2013ZX04010021)

摘　　要：弹簧蓄能密封圈在夹套材料磨损后能依靠弹簧回弹来维持良好的密封特性,被广泛应用在诸多领域。但针对该密封圈的研究相对缺乏。因其结构的螺旋性导致了无法直接采用二维模型进行分析。提出一种建模方法构造密封圈的二维轴对称模型:首先通过数值实验得到三维螺旋盘绕弹簧的力学特性,在此基础上结合等效原则构建二维变截面等效弹簧,进而建立螺旋盘绕弹簧蓄能密封圈的二维轴对称有限元模型。利用该模型,进行算例验证,仿真结果和已知数据有很好吻合度,表明了该模型的有效性。该二维弹簧等效建模方法大幅提高了仿真效率,为螺旋弹簧及含弹簧系统的仿真提供了一种有效的方法。Spring energized seal ring is applied in many fields, since it canmaintain the sealing performance when micro-wear happens in its coat.However,its related research is scarce for the 2-D model cannot be used to study the seal ring directly because of its spiral structure.The finite element model for spring energized seal ring was accomplished by three steps： first, the mechanical property of the initial 3-D bended coil-spring was attained by utilizing the numerical experiment;then, a 2-D equivalent spring was designed which has the similar mechanical property with the initial one;and the last,the axial symmetry model of the whole sealing system wasset up.This model can be used in analysis of ring＇s assem- bly, and its validity is evidenced by the existing data. Consequently, this effective and time-saving model provides a new method for spring energized seal ring.

关 键 词：弹簧蓄能密封圈 轴对称模型 二维变截面等效弹簧 

分 类 号：TH136[机械工程—机械制造及自动化]