Browse Publications Technical Papers 891140
1989-05-01

Ride Dynamic Model of a Tilt Cab for Off-Road Vehicles 891140

A six degrees-of-freedom ride dynamic model of a cab-over-engine supported on elastomer mounts is developed using lumped parameters. The lumped parameter model is analyzed for its free vibration response, while assuming the cab structure to be rigid. A finite element model of the suspended cab is developed and analyzed to establish the influence of flexibility of the cab structure on the ride dynamics of the tilt cab. The vibration modes of analytical lumped parameter and finite element models are compared to the dominant ride frequencies of the vehicle measured in the field. The lumped parameter model is then modified to achieve a comprehensive ride dynamic model for its further use in ride performance analyses.

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