Investigation of Polymer Hybrid Ball Bearings' Dynamic Behaviour

Year 2023, Volume: 4 Issue: 2, 40 - 49, 31.12.2023

Burcu Küçükoğlu Doğan Tuncay Karaçay

Abstract

Contact mechanics must be analyzed to determine the dynamic characteristics of polymer hybrid bearings. Since the polymer bearings have contact surfaces of polymer-polymer, polymer-glass, or polymer-steel, the Hertz contact theory used to examine the contact mechanics of conventional bearings cannot be directly used. Due to the elastoplastic structure of polymer materials, elastoplastic contact mechanics is used in examining contact mechanics. In this study, the contact mechanics of the polymer bearing were analyzed as elastoplastic contact and were included in the shaft-bearing system model. An algorithm was developed in the MATLAB environment using the geometry of the 6203 bearings, and its dynamic characteristics were examined through simulations. The equations of motion are simulated at different shaft speeds with an elastic region assumption to determine the dynamic characteristics of polymer hybrid bearings. The results are discussed in the time-frequency domain.

Keywords

Elasto-plastic contact, polymer hybrid ball bearing, vibration

Project Number

06/2018-08

Polimer Hibrid Rulmanların Dinamik Davranışının İncelenmesi

Abstract

Polimer hibrid rulmanların dinamik özelliklerini belirlemek için temas mekaniğinin analiz edilmesi gerekmektedir. Polimer rulmanlar polimer-polimer, polimer-cam veya polimer-çelik temas yüzeylerine sahip olduğundan, geleneksel rulmanların temas mekaniğini incelemek için kullanılan Hertz temas teorisi doğrudan kullanılamamaktadır. Polimer malzemelerin elastoplastik yapısından dolayı temas mekaniğinin incelenmesinde elastoplastik temas mekaniği kullanılmaktadır. Bu çalışmada, polimer hibrid rulmanın temas mekaniği elastoplastik temas olarak analiz edilmiş ve şaft-rulman sistemi modeline dahil edilmiştir. 6203 rulmanın geometrisi kullanılarak MATLAB ortamında bir algoritma geliştirilmiş ve simülasyonlar aracılığıyla dinamik özellikleri incelenmiştir. Polimer hibrid rulmanların dinamik özelliklerini belirlemek için hareket denklemleri rulmanın elastik bölgede olduğu kabul edilerek farklı mil hızlarında simüle edilmiştir. Sonuçlar zaman-frekans alanında tartışılmıştır.

Keywords

Elasto-plastik temas, polimer hibrid rulman, titreşim

Supporting Institution

Gazi Üniversitesi Bilimsel Araştırma Projeleri Koordinasyon Birimi

Project Number

06/2018-08

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