{"title":"A Numerical Approach for Static and Dynamic Analysis of Deformable Journal Bearings","authors":"D. Benasciutti, M. Gallina, M. Gh. Munteanu, F. Flumian","volume":67,"journal":"International Journal of Mechanical and Mechatronics Engineering","pagesStart":1241,"pagesEnd":1247,"ISSN":"1307-6892","URL":"https:\/\/publications.waset.org\/pdf\/8838","abstract":"This paper presents a numerical approach for the static\nand dynamic analysis of hydrodynamic radial journal bearings. In the\nfirst part, the effect of shaft and housing deformability on pressure\ndistribution within oil film is investigated. An iterative algorithm that\ncouples Reynolds equation with a plane finite elements (FE)\nstructural model is solved. Viscosity-to-pressure dependency (Vogel-\nBarus equation) is also included. The deformed lubrication gap and\nthe overall stress state are obtained. Numerical results are presented\nwith reference to a typical journal bearing configuration at two\ndifferent inlet oil temperatures. Obtained results show the great\ninfluence of bearing components structural deformation on oil\npressure distribution, compared with results for ideally rigid\ncomponents. In the second part, a numerical approach based on\nperturbation method is used to compute stiffness and damping\nmatrices, which characterize the journal bearing dynamic behavior.","references":"[1] J. Boyd, A. A. Raimondi, \"Applying bearing theory to the analysis and\ndesign of journal bearings\", J. Appl. Mech., Trans. ASME, vol. 73, pp.\n298-309 (Part I), pp. 310-316 (Part II), 1951.\n[2] A. A. Raimondi, J. Boyd, \"A solution for the finite journal bearing and\nits application to the analysis and design\", Trans. ASLE, vol. 1, no. 1,\npp. 159-174 (Part I), pp. 175-193 (Part II), pp. 194-209 (Part III), April\n1958.\n[3] DIN 31652 (Part 1-3), Hydrodynamic plain journal bearings designed\nfor operation under steady-state conditions, 1983.\n[4] G. W. Stachowiak, A. W. Batchelor, Engineering Tribology (Third\nEdition), Elsevier Butterworth-Heinemann, Burlington, 2005.\n[5] A. Z. Szeri, Fluid film lubrication Cambridge University Press, 2011\n(2nd ed.).\n[6] ASM Handbook (Vol. 2) Properties and selection: nonferrous alloys\nand special-purpose materials. ASM International, 1990\n[7] J. Frene, D. Nicolas, B. Berthe, M. Godet, Hydrodynamic lubrication,\nElsevier, 1990.","publisher":"World Academy of Science, Engineering and Technology","index":"Open Science Index 67, 2012"}