摘要
使用ANSYS软件对重载条件下服役的自润滑推力轴承进行了摩擦性能模拟,并对计算进行了地面试验验证和研究。结果表明:小于0.4 mm厚的自润滑轴衬有利于减少轴承接触面的应力,降低摩擦因数,减少轴衬的厚度,提高轴衬材料的压缩强度、热导率等有利于降低轴衬材料的工作温度,提高轴衬的使用寿命。Nomex/PTFE复合自润滑材料的摩擦因数随载荷的增加而稳定降低,在145 MPa的重载荷下出现0.017极低摩擦因数。
The friction properties of self-lubricating highly loaded thrust bearing was simulated by ANSYS soft- ware. The calculated result was verified and studied by ground experiment. The results show that self-lubrication helps to decrease the peak stress in the contact surface while its thickness is less than 0.4ram. The decrease of friction coefficient, increase of compress strength, or increase of the conduct coefficient of self-lubrication could lengthen the bearing-life by decreasing the temperature of bearing surface. The friction coefficient of Nomex/PTFE self-lubricating composite decreases steadily with the increasing of thrust load, ultra small value 0.017 is reached under the 145 MPa
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2013年第3期51-55,共5页
Aerospace Materials & Technology
基金
民用航天项目支持(C4220080301)
关键词
摩擦
自润滑材料
推力轴承
数值模拟
Friction, Self-lubricating, Numerical simulation, Thrust bearing
