Magnetic fluid lubrication of porous pivoted slider bearing with slip and squeeze velocity

در اين مقاله يك مدل مناسب براي تعيين توزيع جريان القايي روي پراكنده كننده‌ي الكترومغناطيسي كه داراي شكل نوار با پهناي محدود و طول نامحدود است مورد استفاده قرار مي‌گيرد. براي اين منظور از معادله‌ي انتگرال ميدان الكتريكي به عنوان يك ابزار رياضي استفاده شده و سپس يك روش عددي مناسب جهت محاسبه‌ي نتايج تقريبي براي اين معادله پيشنهاد مي‌شود. نتايج براي هر دو نوع پلاريزاسيون ارايه مي‌گردد.

In this paper the problem on "Magnetic uid lubrication of porous-pivoted slider bearing with slip velocity by Ahmad et.al. (N. Ahmad, J. P. Singh, Magnetic uid lubrication of porous-pivoted slider bearing with slip velocity, Journal of Engineering Tribology, 2007)" has been recapitulated using Jenkinʹs model (J. T. Jenkins, A Theory of magnetic uids, Archive for Rational Mechanics and Analysis, 1972) with the additional eect of squeeze velocity of the above plate. It is found that while discussing the above problem, (N. Ahmad, J. P. Singh, Magnetic uid lubrication of porous-pivoted slider bearing with slip velocity, Journal of Engineering Tribology, 2007) has stated but ignored the term 2r  (M M M) , where M = DM Dt + 1 2 (r  q) M, in their study (Refer equation (2.2)). This paper reconsiders the above neglected term with M = 1 2 (r  q) M, where M = H. Since M is the corotational derivative of magnetization vector, so it has an impact on the performance of the problem (P. Ram, P. D. S. Verma, Ferro uid lubrication in porous inclined slider bearing, Indian Journal of Pure and Applied Mathematics, 1999). With the addition of the above term and under an oblique magnetic field, it is found that the dimensionless load carrying capacity can be improved substantially with and without squeeze effect. The paper also studied in detail about the effects of squeeze velocity and sliding velocity. It is observed that dimensionless load carrying capacity increases when squeeze velocity increases and sliding velocity decreases.