eprintid: 7963 rev_number: 2 eprint_status: archive userid: 1 dir: disk0/00/00/79/63 datestamp: 2023-11-09 16:19:48 lastmod: 2023-11-09 16:19:48 status_changed: 2023-11-09 16:10:50 type: article metadata_visibility: show creators_name: Rao, T.V.V.L.N. creators_name: Rani, A.M.A. creators_name: Awang, M. creators_name: Nagarajan, T. creators_name: Hashim, F.M. title: Stability analysis of double porous and surface porous layer journal bearing ispublished: pub keywords: Journal bearings, Brinkman models; Dynamic coefficient; High permeability; Low permeability; Short bearing approximation; Stability analysis; Stability thresholds; Whirl frequency ratios, Linear stability analysis note: cited By 15 abstract: The linear stability analysis of double porous and surface porous layer journal bearing based on long and short bearing approximations is presented. The Brinkman model is employed in the porous region and the infinite permeability porous layer is simulated as surface layer. The coefficients of load, threshold speed and critical whirl frequency ratio are computed for double porous and surface porous layer configurations. The coefficients obtained using long and short bearing approximations yield same results. Higher threshold speed is obtained for double layer configurations of (i) high permeability bearing adsorbent porous layer topped with low permeability porous layer, and (ii) surface porous layer lubricant film. © 2016 Taylor & Francis. date: 2016 publisher: Maney Publishing official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959554306&doi=10.1080%2f17515831.2015.1123350&partnerID=40&md5=f2cffbfeac923edc2d608bf3b543caff id_number: 10.1080/17515831.2015.1123350 full_text_status: none publication: Tribology - Materials, Surfaces and Interfaces volume: 10 number: 1 pagerange: 19-25 refereed: TRUE issn: 17515831 citation: Rao, T.V.V.L.N. and Rani, A.M.A. and Awang, M. and Nagarajan, T. and Hashim, F.M. (2016) Stability analysis of double porous and surface porous layer journal bearing. Tribology - Materials, Surfaces and Interfaces, 10 (1). pp. 19-25. ISSN 17515831