Abstract
The linear wheel model is the most widely used in ride comfort analysis of tracked vehicles. However, as the speed of the vehicle increases and the application of new materials, and the road wheel becomes lighter and softer, its nonlinear characteristics become more and more obvious and can't be ignored in vehicle dynamics simulation. This paper aims to study the effect of nonlinear stiffness of a novel flexible road wheel (FRW) with unique suspension bearing structure on the ride comfort of a tracked vehicle traversing random uneven road. The linear and nonlinear models of FRW were established by fitting the load-deflection data obtained from the static loading test of the physical prototype. The established linear and nonlinear models of FRW were added to a half-vehicle model of a tracked vehicle which has been proved by published test results. The ride comfort of the half-vehicle model of the tracked vehicle with linear and nonlinear models of FRW on random uneven road surface was studied in detail. The study results show that, compared with the linear wheel model, the nonlinear model has a tremendous influence on the dynamic response of the tracked vehicle, effectively suppressing the vibration, especially for the high frequency excitation. In addition, the nonlinear factor has a greater impact on the dynamic performance of the wheel than on the suspension and the body. The research results enrich the study of nonlinear dynamics of tracked vehicles, and provide reference for nonlinear modeling of other pneumatic tires and non-inflatable wheels.
Highlights
For general military tracked vehicles, the crawler propulsion device includes the crawler, driving wheel, induction wheel, tensioning device, road wheel and supporting belt wheel
In the research about the ride comfort of tracked vehicles, the road wheel models are almost linear model, but the nonlinear effect of the road wheel becomes more prominent as the vehicle speed increases and the road wheel becomes lighter and softer
It is necessary to study the influence of the nonlinear stiffness of the road wheel on the ride comfort of the tracked vehicle
Summary
For general military tracked vehicles, the crawler propulsion device includes the crawler, driving wheel, induction wheel, tensioning device, road wheel and supporting belt wheel. Tracked vehicles usually have a high degree of off-road mobility, and they are often required to pass through uneven fields, trenches, low walls and soft ground, which will bring strong vibration [2]. Most of the road wheels for tracked vehicles is a rigid solid structure, and the vibration damping effect is not satisfactory [3]. This structure has the disadvantages of low carrying efficiency and large mass. It is urgent to develop a new type of road wheel to improve the overall performance of tracked vehicles, cooperating with suspension system design
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
