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A Systematic Approach to Vehicle Design Using VDAS (Vehicle Dynamics Analysis Software)
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Abstract
A comprehensive and systematic approach to vehicle dynamics analysis is described. All the commonly required calculations for vehicle dynamics studies have been embodied in a computer package called VDAS (Vehicle Dynamics Analysis Software). Examples taken from off-road vehicle applications are chosen to show how this particular class of dynamics problem can be tackled efficiently using this package.
In addition to the standard range of calculations for vehicle ride and handling behaviour, e.g. natural frequencies, mode shapes, frequency responses, power spectral densities, steady state handling diagrams etc., the package incorporates more advanced features including derivation of control laws for active/semi-active suspension applications and sensitivity analysis to assist design studies.
The VDAS package currently contains a range of ride and handling models of varying degrees of complexity, suitable for vehicle analysis. Further models can easily be added and a front-end processor has been developed for automating the derivation of new models.
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Authors
Citation
Crolla, D., Horton, D., Brooks, P., Firth, G. et al., "A Systematic Approach to Vehicle Design Using VDAS (Vehicle Dynamics Analysis Software)," SAE Technical Paper 940230, 1994, https://doi.org/10.4271/940230.Also In
References
- Crolla, D A Firth, G R Horton, D. Independent vs Axle Suspension for On/Off Road Vehicles SAE paper 921662 1992
- Hearn A C. REDUCE version 3.3 The Rand Corporation 1987
- Horton D Crolla D A. The Application of Linear Sensitivity Methods to Vehicle Dynamics Problems 12 th IAVSD Conference Lyon August 1991
- Horton D. VDAS - Vehicle Dynamics Analysis Software, Version 3.4, User manual January 1992
- Kane T R Levinson D A. Formulation of Equations of Motion for Complex Spacecraft J. Guidance and Control 3 2 Mar-Apr 1980