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Auflistung nach Schlagwort "Friction"

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Characterization of porous surfaces with spatial point pattern analysis

Zou, Yibo; Kästner, Markus; Reithmeier, Eduard (Bellingham, Wash. : SPIE, 2015)

Nowadays thermal plasma spray coating is widespread in automobile industry. For example, in the cylinder manufacturing process coatings are applied for friction reduction, wear and corrosion resistance. After the honing ...
Description of the contract between a deterministic anisotropic tool surface and a workpiece subjected to plastic deformation

Rotarescu, M.-I. (London : SAGE Publications Ltd., 1998)

The finite element method offers an opportunity to obtain important information by simulating metal-forming processes. The description of the tool-workpiece interaction still remains a critical issue. The aim of this paper ...
Dry friction of microstructured polymer surfaces inspired by snake skin

Baum, Martina J.; Heepe, Lars; Fadeeva, Elena; Gorb, Stanislav N. (Frankfurt am Main : Beilstein-Institut zur Förderung der Chemischen Wissenschaften, 2014)

The microstructure investigated in this study was inspired by the anisotropic microornamentation of scales from the ventral body side of the California King Snake (Lampropeltis getula californiae). Frictional properties ...
Effect of load reduction mechanisms on loads and blade bearing movements of wind turbines

Stammler, Matthias; Thomas, Philipp; Reuter, Andreas; Schwack, Fabian; Poll, Gerhard (Chichester : John Wiley and Sons Ltd, 2019)

The power control of wind turbines is usually realized via a change in the pitch angle of the rotor blades. Pitching facilitates the exact control of the turbines and the reliable deceleration of the rotor when required. ...
Enhancement of the interface of friction welded steel-aluminium joints

Behrens, Bernd-Arno; Duran, Deniz; Matthias, Tim; Ross, Ingo (Berlin : Springer, 2020)

Lightweight multi-material components are of great importance for the transport industry. Not only the component’s weight can be decreased, but also its local properties can be adapted to different loading profiles. Tailored ...
Experimental and Numerical Investigation of Tire Tread Wear on Block Level

Hartung, Felix; Garcia, Mario Alejandro; Berger, Thomas; Hindemith, Michael; Wangenheim, Matthias; Kaliske, Michael (Basel : MDPI, 2021)

Tread wear appears as a consequence of friction, which mainly depends on surface charac-teristics, contact pressure, slip velocity, temperature and dissipative material properties of the tread material itself. The subsequent ...
Experimental investigation and modeling of tire tread block friction on ice

Ripka, Stefan (Hannover : Gottfried Wilhelm Leibniz Universität Hannover, 2012)

[no abstract]
Fluid rheology, traction/creep relationships and friction in machine elements with rolling contacts

Poll, G.W.G.; Wang, D. (London : SAGE Publications Ltd., 2012)

The correct prediction of shear stresses in lubricants applied to concentrated rolling/sliding contacts has been an issue of intense debate for many years. Traction testers of various kinds such as two-disc roller rigs or ...
Influence of metal working fluid on chip formation and mechanical loads in orthogonal cutting

Denkena, Berend; Krödel, Alexander; Ellersiek, Lars (London : Springer, 2022)

Metal working fluids are used in machining processes of many hard-to-cut materials to increase tool life and productivity. Thereby, the metal working fluids act on the thermal and on the mechanical loads of the tool. The ...
Investigation of the composite strength of hybrid steel-steel semi-finished products manufactured by laser beam welding and friction welding

Behrens, Bernd-Arno; Chugreev, A.; Matthias, T.; Nothdurft, S.; Hermsdorf, J.; Kaierle, Stefan; Ohrdes, H.; Twiefel, J.; Wallaschek, J.; Mildebrath, M.; Hassel, T. (Bristol : IOP Publishing Ltd., 2018)

An ever-increasing demand for more effective products with lower weight, more compact design and extended functionality has led to the use of material combinations with locally adapted properties instead of mono-materials. ...
Microscopic investigations into lubricated friction pairs in synchronizers

Poll, G.; Neudörfer, S.; Skubacz, T. (London : SAGE Publications Ltd., 2008)

An essential component of manually operated vehicle transmissions is the synchronising device. Synchronizers have the task of minimizing the speed difference between the shifted gearwheel and the shaft by means of frictional ...
Model-based feedforward control in industrial robotics

Grotjahn, Martin; Heimann, Bodo (London : SAGE Publications Ltd., 2002)

Simple linear joint controllers are still used in typical industrial robotic systems. The use of these controllers leads to non-negligible dynamic path deviations for applications that require high path accuracy. These ...
Modelling friction characteristics in turbine blade vibrations using a fourier series expansion of a real friction hysteresis

Hoffmann, Thomas; Panning-von Scheidt, Lars; Wallaschek, Jörg (London : Elsevier Ltd., 2017)

A new contact model is proposed to simulate the forced response of a two degree of freedom mechanical model which resembles the simplest form of a friction damped turbine blade. The model scales a measured friction hysteresis ...
Näherungslösungen für Reibung und Verschleiß in ölgeschmierten Wälzkontakten unter Berücksichtigung der realen Rheologie

Terwey, Jan Torben (Hannover : Institutionelles Repositorium der Leibniz Universität Hannover, 2020)

Für einen sicheren Betrieb von Maschinenelementen auch unter anspruchsvollen Einsatzbedingungen ist nicht nur die Sicherheit gegen mechanisches Versagen nachzuweisen, sondern auch die Funktionsfähigkeit ihrer tribologischen ...
Numerical Investigations on District Heating Pipelines under Combined Axial and Lateral Loading

Gerlach, Tim; Achmus, Martin; Terceros, Mauricio (London : Elsevier Ltd., 2018)

Within the design process of district heating networks, the soil resistances in axial and lateral pipeline direction are commonly treated independently as friction resistance and bedding pressure. However, at curved segments ...
On the influence of thermally induced radial pipe extension on the axial friction resistance

Gerlach, Tim; Achmus, Martin (London : Elsevier Ltd., 2017)

Within the design process of district heating networks, the maximum friction forces between the pipeline and the surrounding soil are calculated from the radial stress state and the coefficient of contact friction. For the ...
Optimization of the tribological performance of rectangular seals in automotive transmissions

Gronitzki, M.; Poll, G.W.G. (London : SAGE Publications Ltd., 2007)

Rectangular seals - a special type of face seals - are currently used in rotating connections of automatic automotive transmissions (double clutch transmissions, continuously variable transmissions, and 6-automated ...
Stability of interlocked pattern placed block revetments

Gier, Fabian; Schüttrumpf, Holger; Mönnich, Jens; van der Meer, Jentsje; Kudella, Matthias; Rubin, Hillel (Reston : American Society of Civil Engineers, 2012)

Revetments protect the shorelines of coasts, estuaries and rivers against wind waves, ship waves, currents and ice attacks. The resistance of revetments basically depends on the properties of the cover layer. In the case ...
Thermomechanical Coating Load in Dependence of Fundamental Coating Properties

Beblein, S.; Breidenstein, Bernd; Denkena, Berend; Pusch, C.; Hoche, H.; Oechsner, M. (Amsterdam : Elsevier BV, 2017)

The conventional development of a coating system for cutting tools includes a variety of test series with elaborate experimental parameter studies. In particular, experimental investigations of the cutting behavior cause ...
Tools and Strategies for Grinding of Riblets on Freeformed Compressor Blades

Denkena, Berend; Grove, Thilo; Krawczyk, T. (Amsterdam : Elsevier BV, 2016)

A major goal in the design of turbomachinery is the increase of efficiency. To attain this increase, the flow losses must be reduced. A substantial proportion of the losses is generated by skin friction between compressor ...

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