螺旋槽机械密封摩擦副界面流固耦合分析  

Fluid-solid Coupling Analysis of the Friction Pair Interface for Spiral Groove Mechanical Seal

作　　者：李宁[1] 穆塔里夫.阿赫迈德 吕星刚 

机构地区：[1]新疆大学,新疆乌鲁木齐830047 [2]新疆乌苏市北方新科有限公司,新疆乌苏833300

出　　处：《流体机械》2016年第1期29-33 37,37,共6页Fluid Machinery

基　　金：国家自然科学基金项目(51165043)

摘　　要：基于建立的三维螺旋槽机械密封摩擦副界面的流、固有限元模型,数值模拟了动静环端面间的流体膜,得到液膜的压力分布规律,结果显示压力呈非线性分布;然后将得到的压力值作为边界条件之一导入到动环端面的静力学分析中,利用两者接触面间的自动迭代计算实现单向弱流固耦合分析,结果表明:最大变形发生在动环端面螺旋槽处,而最大应力发生在螺旋槽顶端;并进一步研究了动环的转速以及介质压力和粘度对最大变形和最大应力的影响规律,为密封性能的优化提供了有益的参考。Based on the 3D finite element models of the fluid-film and solid of the friction pair interface for spiral groove me-chanical seal,the fluid-film between the faces of the static and dynamic is simulated ,and the law of the pressure distribution was obtained,the result show that pressure distribution is nonlinear.After that,the pressure was imported into static analysis module as one boundary condition of dynamic ring,then the one-way fluid-solid weak coupling was achieved by automatic iterative of the two steps.,the values indicate that the maximum deformation occurs on the spiral groove in the face of dynamic ring,while the maxi-mum stress occurs on the end of the spiral groove.Further,the effect of the rotational speed of dynamic ring,the pressure differ-ence and the viscosity on the maximum deformation and stress were also studied,the result provide a beneficial reference for the optimization of sealing performance.

关 键 词：摩擦副 流固模型 数值模拟 弱耦合分析 最大变形 

分 类 号：TH136[机械工程—机械制造及自动化]