Wheel shimmy suppression through the piecewise nonlinear energy sink: elimination of detrimental isolas - presented by Prof. Giuseppe Habib

Wheel shimmy suppression through the piecewise nonlinear energy sink: elimination of detrimental isolas

Prof. Giuseppe Habib

Prof. Giuseppe Habib
Slide at 02:01
NODYCON 2025 Single Wheel System Shimmy Model 0.12 A₀(Original) [Nms/rad] A₀(Approximating) Cw = 36 [Nms/rad] Key Points: 0.08 Aₐ(Original) Cw = 39 [Nms/rad] A,(Approximating) 0.08 This model effectively characterizes the shimmy 0.05 angle [rad] A₀ [rad] phenomenon within the critical velocity range. 0.06 Fourth International Nonlinear Dynamics Conference Amplitude [rad] 0.06 0.04 -0.05 0.04 Hopf bifurcations emerge at both boundaries of t [s] 0.02 the shimmy velocity range, called critical 0.02 velocities. u [m/s] u [m/s] The velocity range is impacted significantly by Bifurcation region for speed The effect of kingpin damping the system parameters, such as kingpin damping, 0.12 stiffness, and tire stiffness. Kw = 7350 [Nm/rad] Ky = 24696 [N/rad] Kw = 8820 [Nm/rad] Ky = 27000 [N/rad] Kw = 9600 [Nm/rad] 0.08 Ky = 28224 [N/rad] 0.08 0.06 AΘ [rad] 0.06 AΘ [rad] 0.04 0.04 0.02 0.02 u [m/s] u [m/s] The effect of kingpin stiffness The effect of tire stiffness 6/17/2025
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Summary (AI generated)

Our study examines the application region of the single wheel system shimmy model, as illustrated in the accompanying figure. This model effectively characterizes the behavior of the system within the critical velocity range. Bifurcations occur at both boundaries of this range, which is influenced significantly by system parameters including damping, sharpness, and chair darkness.