WEAR RESISTANCE OF POLYMER COMPOSITE MATERIALS FOR PLANE SPHERICAL BEARINGS
DOI:
https://doi.org/10.18372/0370-2197.2(103).18670Keywords:
plane spherical bearing, composite polymer materials, structure, vibrations, reverse motion, wearing, operational conditionsAbstract
The use of polymer composite materials allows significantly reduce the labor intensity of manufacturing friction unit parts due to high-performance and economical resources.
According to the definition, a composite material consists of one or more continuous phases of a homogeneous matrix with one or more dispersive phases. In this regard, the reliable operation of metal-polymer tribosystems primarily depends on the structural and morphological factor influencing the tribomechanical characteristics of materials. The principle of producing composite materials consists of a pre-created combination of two different phases (fillers and matrix) using certain technological techniques. As a result of filling, materials are obtained whose physical and mechanical properties differ from the matrix. The choice of fillers for metal-polymer materials depends on the purpose of the material, the need to change some tribomechanical characteristics and the type of polymer matrix.
Plain spherical bearings with metal-polymer tribosystems are very popular in the aviation industry. They are made from stainless and corrosion-resistant steels and do not require maintenance. Compacts have an extremely high payload-to-weight ratio and are used in primary and secondary flight control systems. They have a hinged type design.
The work identifies modern antifriction composite materials for use in plain spherical bearings. The structures and wear resistance characteristics of polymer materials under special operating conditions - vibration, reverse movements - have been determined.
It has been established that the design of the composite material is of paramount importance under increased loads in low-frequency vibration tests. It has been determined that the Fluroglide material, consisting of carbon fibers with the addition of PTFE material with functional additives, shows high tribological characteristics comparable to classic metal fluoroplastic tape. At extreme loads of metal-polymer composite materials, a key role is played by relaxation processes and the ability of the base of the composite material to restrain polymer materials and fillers from crushing and from the action of reverse movements. Under these critical operating conditions, Fluroglide exhibits superior wear resistance to metal fluoroplastic tape.
References
Chernets М.V., Romanenko Y.О., Kornienko А.О., Chernets Y.М. Methodological basis of calculation the metal and metal-polymer of sliding bearings: Contact strength, wearing, durability. Part. 3. Metal-polymer transmissions. – К.: NAU, 2022. – 250 p.
Denchev Z., Dencheva N. Preparation, Mechanical Properties and Structural Characterization of Microfibrillar Composites Based on Polyethylene/Polyamide Blends. Synthetic Polymer-Polymer Composites. München, Germany, 2012. P. 465–524. URL: https://doi.org/10.1007/978-1-56990-525-8_14
Rymuza, Zygmunt. "Adhesion and wear in miniature plastic bearings." Wear 142, no. 1 (February 1991): 185–93. http://dx.doi.org/10.1016/0043-1648(91)90160-v
Tribological behavior of polymer materials for hybrid metal-polymer assemblies of dry sliding friction. Part. 4. Polytetrafluoroethylene (fluoroplastics). // Problems of Friction and Wear, 2022. - № 2(95). – P. 27 – 34.
Chernets М.V., Kornienko А.О. Tribological behavior of polymer materials for hybrid metal-polymer assemblies of dry sliding friction. Part 3. Polyetherketones, terephthalans. Problems of Friction and Wear. 2022. № 2(95). С. 19–26. URL: https://doi.org/10.18372/0370-2197.2(95).16553
Bolshikh A., Borovkov D., Ustinov B. Investigation of the local area damage influence on the load-bearing capacity of the reinforced composite panels. Aerospace Systems. 2023. URL: https://doi.org/10.1007/s42401-023-00214-9
Myskovets S.V. Wear resistance of bronze parts of fuel equipment in the environment of diesel fuels / S. V. Muskovets, P. P. Savchuk // Scientific Bulletin of the Kherson State Maritime Academy. - 2014. - № 1. - P. 208-212. – Access mode: http://nbuv.gov.ua/UJRN/Nvkhdmi_2014_1_30
GOST 23.211-80. Methodic of investigation of fretting and fretting-corrosion. – М. 1980. – 24 p.
Khimko М.S. Development and modernization of a complex of installations for wear testing of metal-polymer composite materials for spherical sliding bearings. Problems of friction and wear. 2024. № 1 (102). P. 73-83
Report from the Scientific research work № 1.0668.2021 Testing of ШНР6ЮТ and ШН10ЮТ bearings and their compliance analysis with GOST 3635-78. Expert analysis of performance and geometry of ШНР6ЮТ, ШН10ЮТ bearings». К.: NAU, 2021. – 42p.
Marchuk R.M., Mnatsakanov R.H. Analysis of polymer composite materials for sliding bearings. Friction and wear problems. 2023. №1(98). P. 55-62.
Spherical Race Bearings. Encyclopedia of Tribology. Boston, MA, 2013. P. 3225. URL: https://doi.org/10.1007/978-0-387-92897-5_101292
Shevelya V. V., Kalda G. S., Sokolan Y. S. Tribological and Rheological Properties of Thermally Treated Steel under Reverse Friction. Journal of Friction and Wear. 2019. Vol. 40, no. 2. P. 156–162. URL: https://doi.org/10.3103/s1068366619020120
Shevelya V. V., Kalda G. S., Sokolan Y. S. On the Connection between the Relaxation and Dissipative Processes during Steel Friction. Journal of Friction and Wear. 2020. Vol. 41, no. 2. P. 146–152. URL: https://doi.org/10.3103/s1068366620020142
Non-stationary friction-induced vibration with multiple contact points / Z. Li et al. Nonlinear Dynamics. 2023. URL: https://doi.org/10.1007/s11071-023-08321-0
