The advancements made in modeling and parameter identification of nonlinear isolation components in the underlying investigation confirm the importance of accurate Multibody Dynamics modeling of these components for reducing vibration and/or improving ride comfort. Considering dynamic stiffness and loss angle characteristics, the proposed nonlinear isolation component uses the Bouc/Wen hysteresis model for excitation amplitude dependency and a transfer function for excitation frequency dependency. Various combinations of Bouc/Wen hysteresis parameters result in different shapes for hysteresis loops and allows for modeling a wide range of soft and stiff isolator characteristics. The effect of the proposed isolation component on ride studies is illustrated by simulating a maneuver on a road profile using the OpenCRG road description with SimXpert Motion Workspace and Adams/Car. Tire belt dynamics are captured by adding a rigid ring part to the PAC2002 tire model. The proposed non-linear isolator component provides an accurate general applicable modelling tool for frequency and amplitude dependent bushings. The importance of the Bouc/Wen hysteresis model is demonstrated in both simulation applications and the parameter identification process. In addition, it was confirmed again that tire belt dynamics play an important role when analyzing vehicle ride. Upfront NVH trade off studies are possible in the SimXpert Motion Workspace and Adams to improve customer satisfaction, reduce cost/weight of isolation devices, and increase component life.
General modeling and characterization of nonlinear components for vehicle ride studies
im Spannungsfeld von Sicherheit und Umwelt, Internationale VDI-Tagung Reifen-Fahrwerk-Fahrbahn, 12 ; 191-201
VDI-Berichte ; 2086
2009
11 Seiten, 14 Bilder, 3 Quellen
Aufsatz (Konferenz)
Englisch
General modeling and characterization of nonlinear components for vehicle ride studies
Kraftfahrwesen | 2009
|General Modeling and Characterization of Nonlinear Components for Vehicle Ride Studies
British Library Conference Proceedings | 2009
|General Modeling of Nonlinear Isolators for Vehicle Ride Studies
SAE Technical Papers | 2010
|Mathematical Modeling in Vehicle Ride Dynamics
British Library Conference Proceedings | 2012
|Mathematical Modeling in Vehicle Ride Dynamics
SAE Technical Papers | 2012
|