摘要
利用Ansys有限元法对钛合金(TC4)-聚四氟乙稀(PTFE)自润滑复合材料进行结构分析与设计,通过压缩试验与摩擦磨损试验测试了两种不同TC4-PTFE面积比新材料的承载力、摩擦系数和磨损曲线。结果表明,新型复合材料的比强度高,抗压强度达到400MPa,摩擦系数为0.1左右;在承载力为80MPa压应力、摆动频率8次/min及摆角±30°的苛刻条件下,摆动2000次后,达到稳定磨损阶段,磨损率较低(0.0094mg/摆次)。试验证明新型复合材料可用于航空宇航工程。
The TC4-PTFE self-lubricating composite was designed using Ansys finite element method. The compression tests and friction and wear tests were carried out, in order to measure the load-carrying capacity, friction coefficient and wear rate of two different cross-section TC4-PTFE composites. The results show that the TC4-PTFE composite against a mating 45 steel shaft under the dry contact conditions exhibites high strength-to-density, high compressive strength of 400 MPa and low friction coefficient of about 0.1. Under severe conditions such as the load-carrying ca pacity of 80 MPa. oscillating frequency of 8 cycles per minute and oscillating angle of ±30°,after os cillating 2000 times, in the steady-state, the TC4- PTFE composite reveales low wear rate of 0. 0094 mg per cycles. The new composite is suitable as bearing materials at dry sliding and heavy loading conditions such as aeronautic and astronautic engineering.
出处
《中国机械工程》
EI
CAS
CSCD
北大核心
2005年第22期2064-2067,共4页
China Mechanical Engineering
基金
航空科学基金资助项目(04G52044)
关键词
钛合金
复合材料
有限元法
摩擦磨损
润滑材料
Ti alloy
composite
finite element method
friction and wear
self-lubricating material
