Measurement and Representation of the Mechanical Properties of Truck Leaf Springs

Fancher, Paul S.; Ervin, R D; MacAdam, Charles C.; Winkler, C B

doi:10.4271/800905

Cited by 80 publications

(42 citation statements)

References 2 publications

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“…In the seventies last century, a revised bilinear model with a group of linear dampers and dampers was proposed [21] to enhance the calculation precision. The Fancher [22]'s exponential difference model can more accurately describe transient response and hysteresis characteristics of leaf springs. Thus, the Fancher model was chosen to express the dynamic restoring force of leaf springs in this paper, i.e.,…”

Section: Nonlinear Modeling For Key Components Of the Suspensionmentioning

confidence: 99%

Research on dynamics of a class of heavy vehicle-tire-road coupling system

Yang

2011

Sci. China Technol. Sci.

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The dynamic tire force of heavy vehicle is a primary reason for road damage. This paper presents a mathematic model to restore the interacting process of vehicle-tire-road system and tries to find out the mechanics of interaction. A nonlinear tri-axle vehicle model with IBS (integral balanced suspension) is firstly proposed based on the detailed analysis of structural features of a heavy vehicle (DFL1250). The results indicate that the nonlinearities in the vehicle suspension contribute to improvement of ride comfort and to the reduction of dynamic tire force. Furthermore, an FRC (flexible rolling contact) tire model with the enveloping characteristics is added into the IBS model. The tire model considers both the tire contact history with rough road profile and the uneven distribution characteristics of vertical load. The FRC model is able to remove medium and high vibration components from uneven road profile due to its filtering feature. It is expected that these results could supply a new idea for vehicle-road interaction research. heavy vehicle, balanced suspension, enveloping property, nonlinear coupling system, stochastic road excitation Citation:Lu Y J, Yang S P, Li S H. Research on dynamics of a class of heavy vehicle-tire-road coupling system.

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Section: Nonlinear Modeling For Key Components Of the Suspensionmentioning

confidence: 99%

Research on dynamics of a class of heavy vehicle-tire-road coupling system

Yang

2011

Sci. China Technol. Sci.

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“…The resulting force from the leaf spring is found by solving (2). The basis of this equation is inspired by the work in [11,12].…”

Section: Suspension Systemmentioning

confidence: 99%

“…It is worth to notice that the event location can be done efficiently because the continuous extension is constructed using (10) can be found within a few iterations with NewtonRaphson's method because a good initial guess is provided. This initial guess is given in (11) and derived directly from the linear interpolant between the two solution points surrounding the event.…”

Section: Event Systemmentioning

confidence: 99%

On the dynamics of European two-axle railway freight wagons

Hoffmann

2007

Nonlinear Dyn

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The standardized design of European twoaxle freight wagons has been used since the 1890s. The basic construction is a carbody suspended on leaf springs by a system of links working as pendulums. The internationally approved suspension system for these vehicles is the UIC standard suspension. The design is advantageous because it is simple, cheap, and robust. Despite the simple design, its influence on the dynamic performance of the vehicle is highly intricate due to dry friction damping and motion delimiters causing impacts. This paper deals with the dynamic behavior of European two-axle freight wagons analyzed through the use of a multibody model developed specifically for this purpose. The modeling of the vehicle and the integration of the dynamic equations of motion are far from trivial due to the complicated nature of the interacting forces. The model exhibits interesting bifurcation patterns emphasizing the complexity of the dynamic behavior of these wagons.

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“…This suggests that the friction model should have a dependency on displacement. A friction model was chosen based on the work of Berg [25] (see also Fancher et al [26]) in developing a non-linear model for rubber springs used in rail vehicles.…”

Section: Improved Friction Modelmentioning

confidence: 99%

Modelling high frequency force behaviour of hydraulic automotive dampers

Yung

Cole

2006

Vehicle System Dynamics

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Little information on automotive damper performance above 30 Hz is found in the published literature. Design of vehicles for low levels of noise, vibration and harshness requires attention to higher frequencies. This paper describes research into modelling damper behaviour at frequencies up to 500 Hz. The performance of a monotube damper was measured and the empirical data were used to evaluate a recently published parametric model. Methods of assessing prediction accuracy using transfer and coherence functions, and a wavelet-based transfer function were introduced. Modifications to the model were then developed to improve the prediction of high-frequency behaviour.

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Measurement and Representation of the Mechanical Properties of Truck Leaf Springs

Cited by 80 publications

References 2 publications

Research on dynamics of a class of heavy vehicle-tire-road coupling system

Research on dynamics of a class of heavy vehicle-tire-road coupling system

On the dynamics of European two-axle railway freight wagons

Modelling high frequency force behaviour of hydraulic automotive dampers

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