...Felix C. von Plehwe; Corina Schwitzke; Hans-Jörg Bauer To design gearboxes with very high power densities, an effective means of cooling the gears and knowledge of the achievable heat transfer coefficients are necessary. In this paper, a method to measure heat transfer coefficients for oil...

... by the Eq. (1) : (1) R tc = Δ T c Q · A a Fig. 2 Temperature drop and fundamentals modes of heat transfer at thermal joint between two bodies: ( a ) temperature drop [ 22 ] and ( b ) modes of heat transfer [ 23 ] Then, the total heat transfer contact...

... for the tribological test machine. 11 10 2010 07 03 2011 21 07 2011 21 07 2011 cooling copper heat exchangers heat transfer lubrication mechanical contact microchannel flow sliding friction steel wear wear testing bearing design and technology friction sliding...

... for modeling the thermal aspects of the engagement process in a wet clutch. The thermal model includes full consideration of the viscous heat dissipation in the fluid as well as heat transfer into the separator, the friction material, and the core disk. The convective terms in the energy equations for the oil...

... layer between contacting bodies with a specified gap conductance to partition the frictional heat. Application of the model to the heat transfer analysis of journal bearing systems experiencing oscillatory motion is presented. Nonuniformly distributed frictional heat along the axial direction...

... in a numerical scheme designed to provide a full thermomechanical solution for real layered contacts. The model assumes steady state heat transfer and predicts contact pressures and deformations, contact temperature rise, and resulting thermal stresses. The heat division between the contacting components...

... thermal and inertia effects, as well as a choked flow condition. In addition, heat transfer between the fluid film and the seal faces is computed, as are the elastic and thermal distortions of the rings. In the first part of this paper, the influence of the coning angle on mechanical face seal...

... of the read/write and heating elements and boundary conditions. The heat transfer boundary conditions depend on the flying state of the slider and, hence, the air bearing surfaces. In this study, we kept the structure of the transducers the same and investigated the effect of ABS on actuation performance. We...

... that the heat partition obtained depends on the form of non-Newtonian behavior assumed, and that to achieve the same partition as is evident in the experiment a limiting shear stress formulation is necessary. It is suggested that the combination of heat transfer and EHL analysis presented in the paper could...

...Yuan Lin, Graduate Research Assistant; Timothy C. Ovaert, Mem. ASME, Professor By applying the extended version of Stroh’s formalism, the two-dimensional thermoelastic problem for a semi-infinite anisotropic elastic half-plane is formulated. The steady-state heat transfer condition is assumed...

...Yuan Lin, Graduate Research Assistant; Timothy C. Ovaert, Mem. ASME, Professor By taking into account steady-state heat transfer, and surface distortion due to thermal and elastic deformations, a two-dimensional thermoelastic model is developed for rough surface asperity contact, where the thermal...

...Bogdan R. Kucinschi; Kenneth J. DeWitt; Mircea D. Pascovici A numerical model is developed to analyze the influence of thermal deformations on the performance of a radially grooved thrust washer. The analysis couples the flow phenomena (including cavitation) in the lubricant with the heat transfer...

... of the numerical model to simulate real configurations is also illustrated. Theoretical and experimental results are in good agreement. Yet an improved model of heat transfer on boundaries is still needed. Contributed by the Tribology Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for presentation...

...) sliding friction mechanical contact heat transfer temperature distribution vibrations mechanical engineering The major difficulty in reducing rotor vibrations is that the vibrations are time dependent so that vibrations at run up differ from vibrations at run down. One explanation...

... range of Peclet numbers, N Pe (0.5–40) using the available experimental data from the literature. metals cutting thermal analysis tribology machining heat transfer mechanical contact Referring to Fig. 7 , the shear plane heat source together with the tool-chip interface frictional heat...

... tracking regime. The general equations of the THD lubrication and the equations of heat transfer through the rings are established. Different types of heat exchange on the external frontiers of the ring are considered. The equations are numerically solved by using the finite difference method...

...Geng Liu; Qian Wang; Shuangbiao Liu The rough surface contact in a tribological process involves frictional heating and thermoelastic deformations. A three-dimensional thermal-mechanical asperity contact model has been developed, which takes into account steady-state heat transfer, asperity...

... away by the cooling air it was possible to arrive at the relative quantities of heat transferred from the bearing by convection via side leakage and by conduction via the top foil. From these comparisons it was deduced that about an average of 80 percent of the heat energy is carried away by conduction...

... Bearing Conformal Contacts, Part I: Model Formulation and Approximation of Heat Transfer Considering Asperity Contacts ,” ASME J. Tribol. , 120 , pp. 198 – 205 . Khonsari , M. M. , and Wang , S. H. , 1991 , “ On the Fluid-Solid Interaction in Reference to Thermoelastohydrodynamic Analysis...

...V. K. Bhatt The generalized energy equation is reduced into a simple form for conduction and convection modes of heat transfer across a hydrodynamic incompressible fluid film in the deformation phase of plane-strain forging. Expressions for the temperature, velocity, and flow distributions...