ELASTO-KINEMATIC COMPUTATIONAL MODEL OF SUSPENSION WITH FLEXIBLE SUPPORTING ELEMENTS

Authors

  • Tomáš Vrána Department of Vehicles and Ground Transport, Faculty of Engineering, CULS Prague, Kamýcká 129, 165 21 Praha – Suchdol, CZECH REPUBLIC
  • Josef Bradáč Department of Automotive Technology, Škoda Auto University, Na Karmeli 1457, 293 60 Mladá Boleslav, CZECH REPUBLIC
  • Jan Kovanda Department of Security Technologies and Engineering, Faculty of Transportation Sciences, CTU in Prague, Konviktská 20, 110 00 Praha 1, CZECH REPUBLIC

DOI:

https://doi.org/10.14311/AP.2016.56.0147

Keywords:

Independent suspension, MBS model, flexible model of supporting elements, wheel toe, wheel camber, Hyperworks

Abstract

This paper analyzes the impact of flexibility of individual supporting elements of independent suspension on its elasto-kinematic characteristics. The toe and camber angle are the geometric parameters of the suspension, which waveforms and their changes under the action of vertical, longitudinal and transverse forces affect the stability of the vehicle. To study these dependencies, the computational multibody system (MBS) model of axle suspension in the system HyperWorks is created. There are implemented Finite-Element-Method (FEM) models reflecting the flexibility of the main supporting elements. These are subframe, the longitudinal arms, transverse arms and knuckle. Flexible models are developed using Component Mode Synthesis (CMS) by Craig-Bampton. The model further comprises force elements, such as helical springs, shock absorbers with a stop of the wheel and the anti-roll bar. Rubber-metal bushings are modeled flexibly, using nonlinear deformation characteristics. Simulation results are validated by experimental measurements of geometric parameters of real suspension.

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Author Biographies

  • Tomáš Vrána, Department of Vehicles and Ground Transport, Faculty of Engineering, CULS Prague, Kamýcká 129, 165 21 Praha – Suchdol, CZECH REPUBLIC

    Faculty of Engineering,

    Department of Vehicles and Ground Transport

  • Josef Bradáč, Department of Automotive Technology, Škoda Auto University, Na Karmeli 1457, 293 60 Mladá Boleslav, CZECH REPUBLIC
    Department of Automotive Technology
  • Jan Kovanda, Department of Security Technologies and Engineering, Faculty of Transportation Sciences, CTU in Prague, Konviktská 20, 110 00 Praha 1, CZECH REPUBLIC

    Faculty of Transportation Sciences
    Department of Security Technologies and Engineering

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Published

2016-04-30

Issue

Vol. 56 No. 2 (2016)

Section

Articles

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How to Cite

Vrána, T., Bradáč, J., & Kovanda, J. (2016). ELASTO-KINEMATIC COMPUTATIONAL MODEL OF SUSPENSION WITH FLEXIBLE SUPPORTING ELEMENTS. Acta Polytechnica, 56(2), 147-155. https://doi.org/10.14311/AP.2016.56.0147