Abstract. Battlefield mobility is one of the fundamental requirements of tracked
military vehicles. The suspension provides the necessary ride, handling, and
traction for the vehicle when traversing over either paved roads
or on unprepared terrain. The Hydro-gas Suspension Unit (HSU) is
one current state-of-the-art suspension technology with a huge potential for
improvement in the future. In this work a mathematical model
is developed and simulated using Matlab and Simulink. The model
incorporates the compressibility of the fluid and expansion of other
components using an effective bulk modulus and the damper valve
characteristics. A novel method of modelling the flow through the
damper valve using a lookup table is presented to overcome
a problem with algebraic loops. Results from the model are
discussed for different damper valve characteristics and input frequencies. The
HSU model is incorporated into a simulation of a six-wheel
station tracked vehicle having eight degrees of freedom, in order
to study the ride quality of the vehicle and to
propose a method for selecting the damper valve characteristics.
Related topics:
tracked vehicles, mobility
View first page of "Purdy: Mathematical Modelling of a Hydro-Gas Suspension Unit for Tracked Military Vehicles"
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