Search Results - "Schwarze, Hubert"

A CFD-Based Comparison of Different Positive Displacement Pumps for Application in Future Automatic Transmission Systems by Lobsinger, Thomas, Hieronymus, Timm, Schwarze, Hubert, Brenner, Gunther

“…The efficiency requirements for hydraulic pumps applied in automatic transmissions in future generations of automobiles will increase continuously. In…”
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Advances in Lubricated Bearings by Schwarze, Hubert, Hagemann, Thomas

“…Advances in the design and development of lubricated bearings have been a goal of tribology engineers over decades, as the requirements on efficiency, power…”
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A Fully Implicit Coupled Scheme for Mixed Elastohydrodynamic Problems on Co-Allocated Grids by Wettmarshausen, Sören, Schwarze, Hubert

“…In the modeling of elastohydrodynamic lubrication problems considering mixed friction, strongly coupled dependencies occur due to piezo-viscous effects and…”
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A Contribution to Experimental Identification of Frequency-Dependent Dynamic Coefficients of Tilting-Pad Journal Bearings with Centered and Off-Centered Pivot by Zemella, Philipp, Vetter, Daniel, Hagemann, Thomas, Schwarze, Hubert

“…Linearized dynamic bearing parameters and models are of essential interest for rotordynamic analyses in machine design. This paper experimentally studies the…”
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Operating Behavior of Sliding Planet Gear Bearings for Wind Turbine Gearbox Applications—Part II: Impact of Structure Deformation by Hagemann, Thomas, Ding, Huanhuan, Radtke, Esther, Schwarze, Hubert

“…The use of planetary gear stages intends to increase power density in drive trains of rotating machinery. Due to lightweight requirements on this type of…”
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Operating Behavior of Sliding Planet Gear Bearings for Wind Turbine Gearbox Applications—Part I: Basic Relations by Hagemann, Thomas, Ding, Huanhuan, Radtke, Esther, Schwarze, Hubert

“…The application of sliding planet gear bearings in wind turbine gearboxes has become more common in recent years. Assuming practically applied helix angles,…”
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Calculation and Validation of Planet Gear Sliding Bearings for a Three-Stage Wind Turbine Gearbox by Ding, Huanhuan, Mermertas, Ümit, Hagemann, Thomas, Schwarze, Hubert

“…In recent years, the trend towards larger wind turbines and higher power densities has led to increasing demands on planet gear bearings. The use of sliding…”
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Oscillatory and steady shear viscosity: The Cox–Merz rule, superposition, and application to EHL friction by Bair, Scott, Yamaguchi, Tsuyoshi, Brouwer, Ludwig, Schwarze, Hubert, Vergne, Philippe, Poll, Gerhard

“…The new quantitative approach to elastohydrodynamic lubrication requires a description of the steady shear dependent viscosity for calculations of film…”
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Approximation of Non-Linear Rotor Dynamic Resonance Behavior of Vertically Aligned Hydro-Units Guided by Tilting-Pad Bearings by Vetter, Daniel, Hagemann, Thomas, Schubert, Andreas, Schwarze, Hubert

“…Dynamic analyses of vertical hydro power plant rotors require the consideration of the non-linear bearing characteristics. This study investigates the…”
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Influence of Rheological Properties of Lithium Greases on Operating Behavior in Oscillating Rolling Bearings at a Small Swivel Angle by Slabka, Iryna, Henniger, Sören, Kücükkaya, David, Dawoud, Michael, Schwarze, Hubert

“…In this study, the behavior of greases during oscillating bearing operation with a small oscillation angle and high frequency was investigated. This mode of…”
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A Design for High-Speed Journal Bearings with Reduced Pad Size and Improved Efficiency by Hagemann, Thomas, Vetter, Daniel, Wettmarshausen, Sören, Stottrop, Michael, Engels, Alexander, Weißbacher, Christoph, Bender, Beate, Schwarze, Hubert

“…Improving efficiency is a general task in the design process of high-speed journal bearings. A specific fixed-pad bearing geometry featuring reduced pad length…”
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Measured and Predicted Operating Characteristics of a Tilting-Pad Journal Bearing with Jacking-Oil Device at Hydrostatic, Hybrid, and Hydrodynamic Operation by Hagemann, Thomas, Pfeiffer, Peter, Schwarze, Hubert

“…Jacking-oil pockets are applied in many journals and thrust bearing applications in order to provide a hydrostatic oil film force that ensures a wear free…”
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Theoretical and Experimental Investigations on Transient Run-Up Procedures of Journal Bearings Including Mixed Friction Conditions by Prölß, Maximilian, Schwarze, Hubert, Hagemann, Thomas, Zemella, Philipp, Winking, Philipp

“…This paper focuses on the operating behavior of journal bearings for industrial machinery application during run-ups. For this purpose, a numerical simulation…”
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The Impact of Convective Fluid Inertia Forces on Operation of Tilting-Pad Journal Bearings by Hagemann, Thomas, Zeh, Christopher, Prölß, Maximilian, Schwarze, Hubert

“…This paper presents a combination of experimental data, CFD analyses, and bearing code predictions on emergence of convective inertia fluid forces within the…”
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Improvement of Thrust Bearing Calculation Considering the Convectional Heating within the Space between the Pads by Chmielowiec-Jablczyk, Monika, Schubert, Andreas, Kraft, Christian, Schwarze, Hubert, Wodtke, Michal, Wasilczuk, Michal

“…A modern thrust bearing tool is used to estimate the behavior of tilting pad thrust bearings not only in the oil film between pad and rotating collar, but also…”
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Heat convection coefficients of a tilting-pad journal bearing with directed lubrication by Hagemann, Thomas, Zeh, Christopher, Schwarze, Hubert

“…This paper investigates the impact of heat transfer between leading and trailing pad free surfaces and the space between pad regions of high-speed tilting-pad…”
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Experimental and theoretical investigations on transition of lubrication conditions for a five-pad tilting-pad journal bearing with eccentric pivot up to highest surface speeds by Hagemann, Thomas, Zemella, Philipp, Pfau, Bastian, Schwarze, Hubert

“…Lubrication conditions of tilting-pad journal bearings strongly depend on the combination of bearing design, lubricant flow rate, and operating boundary…”
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Modelling and Verification of Practice-relevant Journal-bearing Properties by Blumenthal, Hardwig, Schwarze, Hubert

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Oscillatory and Steady Shear Viscosity of Liquid Lubricants: The Cox-Merz Rule, Superposition, and Application to EHL Friction by Bair, Scott, Yamaguchi, Tsuyoshi, Brouwer, Ludwig, Schwarze, Hubert, Vergne, Philippe, Poll, Gerhard

“…The new quantitative approach to elastohydrodynamic lubrication requires a description of the steady shear dependent viscosity for calculations of film…”
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Tribological Fluid Models for Ancillary Units in Electrical and Hybrid Motor Vehicles by Schwarze, Hubert, Poll, Gerhard, Bartel, Dirk

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