摘要
通过建立激光加工多孔端面机械密封的理论分析模型，应用有限元方法在给定工况下研究了不同微孔截面型线的微孔深径比ε和面积密度Sp对端面开启力、液膜刚度、摩擦扭矩及泄漏量等密封性能参数的影响规律。结果表明：当微孔深径比ε小于或等于0．2时，激光开孔端面密封的开启力、液膜刚度和摩擦力矩随其的增大急剧下降，但当微孔深径比ε大于0．2时，密封性能受其的影响很小；当面积密度Sp为0．4～0．6时，密封可获得最大的开启力或液膜刚度。
A theoretical model was developed for mechanical seals with a laser-textured micro-pore surface （LST-MS）.Finite element method was used to study the effects of the ratio of pore depth on pore diameter ε, and area density Sp of the pores of such a surface with different pore section linetypes on the seal performances,which mainly include opening force,liquid film stiffness, frictional toque and leakage rate.Results show opening force, film stiffness and frictional torque reduce with the increase of the value of ε when its value is not larger than 0. 2, but otherwise the above three sealing parameters show slightly effect. The peak value of opening force or film thickness can be got when Sp is selected to be between 0. 4 and 0.6.
出处
《润滑与密封》
EI
CAS
CSCD
北大核心
2006年第4期42-44,共3页
Lubrication Engineering
基金
国家自然科学基金项目(50575152)
国家教育部科学技术研究重点基金资助项目(03107)
关键词
机械密封
激光加工表面
有限元法
密封性能
mechanical seal
laser-textured surface
finite element method
seal performance
