Results 221 to 230 of about 10,082 (264)
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Physics Education, 2020
Abstract A ball that rolls without sliding on a horizontal surface slows down as a result of static friction. The magnitude of the friction force is calculated by considering the force needed to prevent the contact area slipping.
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Abstract A ball that rolls without sliding on a horizontal surface slows down as a result of static friction. The magnitude of the friction force is calculated by considering the force needed to prevent the contact area slipping.
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FRICTION AND ROLLING RESISTANCE COEFFICIENTS OF FIG
Acta Horticulturae, 1998The coefficients of friction and rolling resistance on various surfaces have great importance for designing agricultural machinery. In this research, two different methods were used. Rolling resistance or maximum angle of stability appearing during the rolling of fruits was measured on an inclined plane.
Alayunt, FN, Cakmak, B, Can, HZ
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Friction and Wear at Tractive Rolling of Cylinders
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2000AbstractBased on the fundamentals of tractive rolling contact mechanics, a method is described which is suited for calculating traction coefficients. Both the deformation and the adhesion component of friction are taken into consideration. It is demonstrated that the maximum traction coefficient is not a constant, but takes different values under ...
Deters, L., Engel, St., Proksch, M.
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Resonance, 2004
While discussing friction, often after describing static and sliding friction, a third type called rolling friction is mentioned. The static friction acting on a rolling body can be either in the direction of motion or opposite to it depending upon the forces acting on the body. But the direction of rolling friction is generally not mentioned.
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While discussing friction, often after describing static and sliding friction, a third type called rolling friction is mentioned. The static friction acting on a rolling body can be either in the direction of motion or opposite to it depending upon the forces acting on the body. But the direction of rolling friction is generally not mentioned.
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Physics Education, 2017
When a hard object rolls on a soft surface, or vice versa, rolling friction arises from deformation of the soft object or the soft surface. The friction force can be described in terms of an offset in the normal reaction force or in terms of energy loss arising from the deformation. The origin of the friction force itself is not entirely clear.
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When a hard object rolls on a soft surface, or vice versa, rolling friction arises from deformation of the soft object or the soft surface. The friction force can be described in terms of an offset in the normal reaction force or in terms of energy loss arising from the deformation. The origin of the friction force itself is not entirely clear.
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Rolling Friction on Viscoelastic Substrates
Transactions of the Society of Rheology, 1969Apparatus has been constructed to carry out precise measurements of rolling friction for rigid balls rolling over soft viscoelastic substrates, using a wide range of ball size, normal load, and rolling speed. Measurements are reported for two viscoelastic substrates, representing high and low energy loss elastomers.
A. N. Gent, R. L. Henry
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Simple Model of Microscopic Rolling Friction
Physical Review Letters, 2005Rolling friction at a microscopic scale is studied with the help of a simple two-dimensional model. Molecular dynamics simulations show that rolling of spherical lubricant molecules exists only for concentrations lower than the concentration of a close-packed layer.
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A machine for the measurement of rolling friction
Journal of Scientific Instruments, 1955The paper describes a machine which has been developed for the measurement of the resistance to rolling under a range of applied loading. The machine is essentially a compact compression machine in which the rolling friction is determined by the principle of the inclined plane. It has a range of loading of 20-1000 lb with a sensitivity of ?? lb.
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CV. The mechanism of rolling friction
The London, Edinburgh, and Dublin Philosophical Magazine and Journal of Science, 1952Summary An investigation has been made of the friction and surface damage produced when a hard steel ball rolls between flat parallel surfaces of a softer metal. The behaviour may be divided into two parts. When rolling first commences, even at small loads, there is marked plastic flow and the resistance to rolling is due primarily to the plastic ...
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