Lubricant transport towards tribocontact in capillary surface structures

Lubricant transport towards tribocontact in capillary surface structures PDF

Author: Klima, Joachim

Publisher: KIT Scientific Publishing

Published: 2018-11-13

Total Pages: 206

ISBN-13: 3731508141

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To counter lubricant shortage at a frictional contact (starvation), lubrication liquids, e.g. oils, are actively transported from a distant location towards the undersupplied tribocontact. This is done via small channels or generally via structures cut into a flat surface. In this way one can use capillary force as a cheap and reliable driver of the lubricant flow. Numerical modeling and experiments show that this method can be considered a promising new option to enhance tribocontact operation.

Lubricant Transport Towards Tribocontact in Capillary Surface Structures

Lubricant Transport Towards Tribocontact in Capillary Surface Structures PDF

Author: Joachim Klima

Publisher:

Published: 2020-10-09

Total Pages: 196

ISBN-13: 9781013278600

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To counter lubricant shortage at a frictional contact (starvation), lubrication liquids, e.g. oils, are actively transported from a distant location towards the undersupplied tribocontact. This is done via small channels or generally via structures cut into a flat surface. In this way one can use capillary force as a cheap and reliable driver of the lubricant flow. Numerical modeling and experiments show that this method can be considered a promising new option to enhance tribocontact operation. This work was published by Saint Philip Street Press pursuant to a Creative Commons license permitting commercial use. All rights not granted by the work's license are retained by the author or authors.

Laser-Induced Periodic Surface Nano- and Microstructures for Tribological Applications

Laser-Induced Periodic Surface Nano- and Microstructures for Tribological Applications PDF

Author: Jörn Bonse

Publisher: MDPI

Published: 2020-11-25

Total Pages: 190

ISBN-13: 303943523X

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This book is the printed edition of the Special Issue published in Materials. The book provides an overview of current international research activities in the field of friction and wear management through the laser processing of periodic surface micro- and nanostructures for technical and medical applications. Contributions of renowned scientists from academia and industry provide a bridge between the fields of tribology and laser material processing in order to foster current knowledge and present new ideas for future applications and new technologies.

Dynamics of Rotors on Refrigerant-Lubricated Gas Foil Bearings

Dynamics of Rotors on Refrigerant-Lubricated Gas Foil Bearings PDF

Author: Leister, Tim

Publisher: KIT Scientific Publishing

Published: 2021-10-28

Total Pages: 192

ISBN-13: 3731511126

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The gas foil bearing (GFB) technology is a key factor for the transition to oil-free rotating machinery. Among numerous advantages, GFBs offer the unique ability to be lubricated with working fluids such as refrigerants. However, the computational analysis of refrigerant-lubricated GFB–rotor systems represents an interdisciplinary problem of enormous complexity. This work pushes forward existing limits of feasibility and establishes a new strategy that enables stability and bifurcation analyses.

On direct and inverse problems related to longitudinal impact of non-uniform elastic rods

On direct and inverse problems related to longitudinal impact of non-uniform elastic rods PDF

Author: Burgert, Jens

Publisher: KIT Scientific Publishing

Published: 2021-05-07

Total Pages: 122

ISBN-13: 3731510871

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The impact of two non-uniform elastic rods is considered and a recursive method was developed that solves the inverse problem: Find the location-dependent impedance function of the impacting rod that generates a prescribed impact force. The developed method delivers exact solutions in closed-form. Moreover, a condition is derived which states if a physically meaningful solution exists. Finally, the underlying 1D model has been validated experimentally.

On the Influence of Piecewise Defined Contact Geometries on Friction Dampers

On the Influence of Piecewise Defined Contact Geometries on Friction Dampers PDF

Author: Aramendiz Fuentes, Jimmy Alberto

Publisher: KIT Scientific Publishing

Published: 2023-09-12

Total Pages: 180

ISBN-13: 373151267X

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This work considers dampers that do not solely focus on a single strategy but instead combine them. The capabilities of conventional dry friction dampers are expanded by taking into account piecewise defined contact geometries. This leads to friction dampers that change their behavior depending on the amplitude of the oscillations. The vibration damping device in this work, introduces damping at high oscillation amplitudes and takes advantage of absorption at low oscillation amplitudes.

Industrial Tribology

Industrial Tribology PDF

Author: Theo Mang

Publisher: John Wiley & Sons

Published: 2011-01-19

Total Pages: 635

ISBN-13: 352763259X

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Integrating very interesting results from the most important R & D project ever made in Germany, this book offers a basic understanding of tribological systems and the latest developments in reduction of wear and energy consumption by tribological measures. This ready reference and handbook provides an analysis of the most important tribosystems using modern test equipment in laboratories and test fields, the latest results in material selection and wear protection by special coatings and surface engineering, as well as with lubrication and lubricants. This result is a quick introduction for mechanical engineers and laboratory technicians who have to monitor and evaluate lubricants, as well as for plant maintenance personnel, engineers and chemists in the automotive and transportation industries and in all fields of mechanical manufacturing industries, researchers in the field of mechanical engineering, chemistry and material sciences.

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