Results 171 to 180 of about 893 (226)

Theory of the shimmy phenomenon

Mechanics of Solids, 2010
The shimmy phenomenon is the appearance of angular self-excited vibrations of the carriage wheels. Such self-excited vibrations provide a serious safety hazard for motion, which explains the great interest of scientists in this phenomenon [1–6]. This problem is most serious for the aircraft fore wheels.
V. Ph. Zhuravlev, D. M. Klimov
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Experiments on Quasiperiodic Wheel Shimmy

Journal of Computational and Nonlinear Dynamics, 2007
The lateral vibration of towed wheels—so-called shimmy—is one of the most exciting phenomena of vehicle dynamics. We give a brief description of a simple rig of elastic tire that was constructed for laboratory measurements. A full report is given on the experimental investigation of this rig from the identification of system parameters to the ...
De´nes Taka´cs, Ga´bor Ste´pan
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Tires as a Cause of Shimmy

SAE Technical Paper Series, 1927
<div class="htmlview paragraph"><b>T</b>HE author enumerates and describes various inter-related movements of the front end of the car that are commonly known as automobile shimmy. A long list is given of experiments made in an attempt to correct the trouble.
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A new shimmy model

Proceedings of the Steklov Institute of Mathematics, 2013
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Zhuravlev, V. Ph., Klimov, D. M., Plotnikov, P. K.   +2 more
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Subcritical Bifurcations in Shimmy Dynamics

AIAA Atmospheric Flight Mechanics Conference, 2012
When wheels are rigid relative to other parts of the supporting structure, complex shimmy phenomena can be described by single-contact-point models and the equations of motion of the corresponding nonholomic systems can be derived by means of Appell-Gibbs equations.
Takács, Dénes, Stépán, Gábor
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A Cure for Shimmy and Wheel Kick

SAE Technical Paper Series, 1929
<div class="htmlview paragraph"><b>B</b>EGINNING with a review of the effects of the almost simultaneous adoption of balloon tires and front-wheel brakes, the authors outline the dynamic conditions of the front-axle system of the conventional car.
J. G. VINCENT, W. R. GRISWOLD
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Perturbation Analysis of Nonlinear Wheel Shimmy

Journal of Aircraft, 2001
A perturbation analysis of nonlinear wheel shimmy in aircraft landing gear is presented for nonlinear models that include terms due to coulomb friction between the oleo struts and freeplay in the torque links. The method of multiple timescales is used to obtain general expressions for the limit-cycle amplitude and the frequency that are functions of ...
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Active Shimmy Control System

1975
Abstract : A T-37 nose gear is modeled as a multiple lumped mass system with four torsional-degrees-of-freedom and one lateral-degree-of-freedom. Fuselage flexibility is incorporated and a Von Schlippe tire model is used. The equations of motion for various input conditions are solved using measured gear properties.
Tom Mahone, Max Gamon
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Nonlinear Modelling of Shimmying Wheels

1993
The problem of the so-called shimmying wheel has been studied in the special literature for several years (see e. g. the early paper of Schlippe and Dietrich, 1941). These investigations are stimulated by the studies of the dynamical behaviour of trailers or those of the steered wheels of cars, landing gears of aeroplanes, etc. (see e. g. Scheidl et al.
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CORRECTION OF BALLOON-TIRE SHIMMYING

SAE Technical Paper Series, 1924
<div class="htmlview paragraph">Shimmying was noticeable before four-wheel brakes began to be used, but since that time the trouble has been greatly increased. Two kinds are distinguishable; (<i>a</i>) low-speed shimmying, a violent wabble of the front wheels about the king-pins without a bouncing of the front axle, and (<i>b<
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