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Leaf springs are essential elements in the suspension systems of vehicles including sport utility vehicles(SUV), trucks, and railroad vehicles. Accurate modeling of the leaf springs is essential in evaluating ride comfort, braking, NVH, and stability. The floating frame of reference formulation is employed to accurately model the leaf springs nonlinearities. Vehicle rollover may result from severe braking during lane changes, cornering, and maneuvering. The braking-induced-steering can lead to rollover instability. In this study, the dynamics of a detailed SUV model is investigated by using…mehr

Produktbeschreibung
Leaf springs are essential elements in the suspension systems of vehicles including sport utility vehicles(SUV), trucks, and railroad vehicles. Accurate modeling of the leaf springs is essential in evaluating ride comfort, braking, NVH, and stability. The floating frame of reference formulation is employed to accurately model the leaf springs nonlinearities. Vehicle rollover may result from severe braking during lane changes, cornering, and maneuvering. The braking-induced-steering can lead to rollover instability. In this study, the dynamics of a detailed SUV model is investigated by using the model in a parametric study to examine the effect of various design configurations. To study the dynamics of very flexible leaf springs, the absolute nodal coordinate formulation (ANCF) is used. A shear-deformable beam element is developed to analyze large rotation and large deformation problems. Using the ANCF, nonlinear strain-displacement relationships are used to define the elastic forces. The beam mass matrix remains constant while the centrifugal and Coriolis forces are zero. The new ANCF beam wa used to analyze very flexible leaf springs in this investigation.
Autorenporträt
Received Ph.D. in Mechanical Engineering from the University of Illinois at Chicago in 2003. Then Dr. Omar joined Caterpillar Inc for five years to develop an in-house multibody dynamics simulation code for large-scale simulation of tracked and wheeled machines and subsystems. Currently, Dr. Omar is a faculty member at Taibah University, KSA.