Results 231 to 240 of about 697,034 (272)

Mechanical constraints to unbound expansion of <i>B. subtilis</i> on semi-solid surfaces. [PDF]

Microbiol Spectr
Krajnc M, Fei C, Košmrlj A, Kalin M, Stopar D.   +4 more
europepmc   +1 more source

Confinement induces internal flows in adherent cell aggregates. [PDF]

J R Soc Interface
Yousafzai MS, Amiri S, Sun ZG, Pahlavan AA, Murrell M.   +4 more
europepmc   +1 more source

The mechanisms of wet clutch friction behaviour [PDF]

, 2010
Wet clutches are used in automatic transmissions to bring about gear changes and also to reduce energy loss in the torque converter. These friction devices are susceptible to stick-slip effects, which result in the vehicle giving an unsteady ride. Stick-slip effects can be avoided by ensuring the wet clutch and lubricant combination produces a friction
Spikes, Hugh, Ingram, Marc Philip
core   +4 more sources

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Modeling and analysis of wet friction clutch engagement dynamics

Mechanical Systems and Signal Processing, 2015
Abstract In recent years, there has been a significant increase in the usage of wet-friction clutches. Presently researchers across the globe are involved in improving the performance and lifetime of clutches through testing and simulation. To understand the clutch vibrational and dynamical behavior, an SAE#2 test setup mathematical model based on ...
Shoaib Iqbal, Farid Al-Bender, Agusmian Partogi Ompusunggu   +2 more
exaly   +2 more sources

Investigation of engagement characteristics of a multi-disc wet friction clutch

Tribology International, 2021
Abstract A kinematic coupling model of the rotation-axial engagement process of friction elements is established based on the oil film dynamic pressure lubrication and an elastic contact model of the asperities. The engagement characteristics of the multi-disc wet friction clutch are analyzed. The equation for the transmission torque of the clutch is
Bao He-yun, Huang Wei, Lu Feng-xia
exaly   +2 more sources

Paper 16: Friction in Wet Clutches

Proceedings of the Institution of Mechanical Engineers, Conference Proceedings, 1967
This paper is intended to demonstrate that designers of wet clutches for power transmission can obtain the optimum friction characteristics for specific applications by considering the interaction between friction materials and lubricants. A friction clutch plate rig is described and the friction results obtained are presented.
E. M. Evans, J. Whittle
openaire   +1 more source

Wet clutch friction characteristics obtained from simplified pin on disc test

Tribology International, 2008
The frictional behavior of wet clutches in vehicle drivetrains is critical for their overall behavior. During the development of new wet clutch systems there is a need to know this friction behavior.
Roland Larsson, Par Marklund
exaly   +2 more sources

Modelling the influence of velocity on wet friction-element friction in clutches

Industrial Lubrication and Tribology, 2018
Purpose This study aims to establish a friction coefficient model relative to the rotation speed of a wet clutch engagement, which can predict friction coefficient under different stages of slipping velocity and different load pressures. In particular, the model has been improved by accounting the speed effect for the perdition of wet friction-element
Yanzhong Wang, Chao Guo, Yuan Li, Guoxing Li   +3 more
openaire   +1 more source

Contact properties of a wet clutch friction material

Tribology International, 2010
Abstract Wet clutches are required to transmit torque and also prevent motion in automatic transmissions. Their performance is critically dependent on a friction material which comprises one of the contacting surfaces. Friction materials are usually a composite of fibres, naturally occurring minerals and particles of silicon and graphite, which are ...
M. Ingram, H. Spikes, J. Noles, R. Watts
openaire   +1 more source

Engagement behavior of degrading wet friction clutches

2011 IEEE/ASME International Conference on Advanced Intelligent Mechatronics (AIM), 2011
This paper presents modeling, simulation and experimental validation of the friction material degradation effects on the dynamic engagement behavior of a wet friction clutch system. The clutch system is modeled as a 3 DOF lumped-mass-spring-damper incorporating an extension of the Generalized Maxwell Slip (GMS) friction model.
Agusmian Partogi Ompusunggu, Thierry Janssens, Farid Al-Bender, Paul Sas, Hendrik Van Brussel   +4 more
openaire   +1 more source