Results 211 to 220 of about 47,385 (265)
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Distributed Manipulation with Rolling Contact
2004The Modular Distributed Manipulator System (MDMS) is an array of actuators that is capable of manipulating objects in the plane. This paper presents a controller designed to transport objects to the origin of a coordinate system under rolling contact. A stability proof using the multivariable circle criterion directly accounts for discontinuities due ...
Mark Bedillion, William C. Messner
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Wear, 1986
Abstract Unexpectedly high uniform rates of wear occur from time to time in concentrated lubricated rolling contacts having low slide-roll ratios. Such wear can occur under quite mild conditions and this poses a significant practical problem, especially in gears.
H.A. Spikes, A.V. Olver, P.B. Macpherson
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Abstract Unexpectedly high uniform rates of wear occur from time to time in concentrated lubricated rolling contacts having low slide-roll ratios. Such wear can occur under quite mild conditions and this poses a significant practical problem, especially in gears.
H.A. Spikes, A.V. Olver, P.B. Macpherson
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2023
Dans ce travail, un modèle bidimensionnel par éléments finis est utilisé pour simuler la réponse mécanique d'une roue ferroviaire roulant sur un rail. Le matériau (acier pour roue) est élastoplastique avec une loi de comportement de Chaboche-Lemaitre combinant l'écrouissage isotrope et l'écrouissage cinématique non linéaire.
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Dans ce travail, un modèle bidimensionnel par éléments finis est utilisé pour simuler la réponse mécanique d'une roue ferroviaire roulant sur un rail. Le matériau (acier pour roue) est élastoplastique avec une loi de comportement de Chaboche-Lemaitre combinant l'écrouissage isotrope et l'écrouissage cinématique non linéaire.
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Balancing on a Rolling Contact
IEEE Robotics and Automation Letters, 2023Federico Allione +3 more
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A case study of the rolling contact of a calendar roll
Proceedings of the Institution of Mechanical Engineers, Part K: Journal of Multi-body Dynamics, 2002The rolling contact of a case study is discussed. A method for describing the contact of the two rolls of a calender unit is presented. Firstly, the rotor dynamics system of a roll is described by expressing the kinetic energy in a global non-rotating coordinate frame and the strain energy in a rotating frame by using a finite element (FE) mesh and ...
V-M Jårvenpåå, L Yuan, E Keskinen
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2019
This chapter contains the results of investigations of the fracture processes (paths of crack propagation) for bodies under the conditions of rolling (rolling with sliding). These results were obtained by using the model proposed in Chap. 2, the solutions of singular integral equations for the corresponding problems, and also the results of evaluation ...
Oleksandra Datsyshyn, Volodymyr Panasyuk
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This chapter contains the results of investigations of the fracture processes (paths of crack propagation) for bodies under the conditions of rolling (rolling with sliding). These results were obtained by using the model proposed in Chap. 2, the solutions of singular integral equations for the corresponding problems, and also the results of evaluation ...
Oleksandra Datsyshyn, Volodymyr Panasyuk
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ROLLING CONTACT FORCE ENERGY RECONSTRUCTION
Journal of Sound and Vibration, 2000Abstract Knowledge of the forces at the wheel–rail contact is fundamental to estimate the consequences in terms of noise and vibration. The traditional use of strain gauges mounted on the wheel web and axle is not capable of determining the high-frequency content of the contact force.
A. Bracciali, CASCINI, GAETANO
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2018
So far, we have focussed mainly on contact problems in which the bodies are nominally stationary, except for the generally small motions associated with material deformation. However, in tribology, we often have to do with bodies in relative motion. This can be accomplished by sliding or rolling at the interface, or by a combination of the two.
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So far, we have focussed mainly on contact problems in which the bodies are nominally stationary, except for the generally small motions associated with material deformation. However, in tribology, we often have to do with bodies in relative motion. This can be accomplished by sliding or rolling at the interface, or by a combination of the two.
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2017
Abstract This article discusses the physical signs of rolling-contact wear (RCW). It lists the major considerations in gear design and describes the mechanisms of RCW. The article provides a guide to rolling-contact fatigue (RCF) testing methods. It explains the steps involved in the processes of RCF and RCW.
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Abstract This article discusses the physical signs of rolling-contact wear (RCW). It lists the major considerations in gear design and describes the mechanisms of RCW. The article provides a guide to rolling-contact fatigue (RCF) testing methods. It explains the steps involved in the processes of RCF and RCW.
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1990
In this chapter we will consider the continuum theory of rolling contact. In our considerations, we concentrate on the continuum aspects of rolling : how a contact region is formed between massive elastic bodies, and how the tangential force is distributed over the contact region and inside the elastic bodies.
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In this chapter we will consider the continuum theory of rolling contact. In our considerations, we concentrate on the continuum aspects of rolling : how a contact region is formed between massive elastic bodies, and how the tangential force is distributed over the contact region and inside the elastic bodies.
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