Power hop is a “porpoising” type of pitch/bounce oscillation superimposed on the forward motion of tractors equipped with pneumatic tires. It is most often observed with tractors having two powered axles pulling towed implements in moderate to high draft field operations on dry soils. As power hop begins, the tractor exhibits gradually increasing vibration amplitudes until the operator, of nece...

A new type of holonomic omnidirectionul vehicle which consists of wheel mechanisms without free rollers but with conventional tires is presented. We first present a concept of the new driving wheel mechanism with a tire in the conventional style such QS a rubber tire or a pneumatic tire,"Offset Steered Driving Wheel". The configuration of the wheel has an offset distance between a wheel axle an...

Recently, research regarding non-pneumatic tires that are resistant to punctures has been actively conducted, and the spoke structure design of found be a crucial factor. This study aimed analyze vertical stiffness characteristics tire based on shape under application load. The three-dimensional model commercial was obtained from manufacturer (Kumho Tire Co., Inc., Gwangju, Korea), three models...

This paper explores the possibility of combining solid state accelerometers with a low resolution position sensor to provide clean estimates of automobile handwheel position, velocity and acceleration for use in force feedback. Typically determining the acceleration and velocity of the handwheel requires differentiating a position sensor such as an encoder or potentiometer. Unless expensive hig...

Application of non-pneumatic tire (NPT) has been increased during the last decade. The aerodynamic characteristics wheel with NPT studied due to significance on improvement handling and reduction fuel consumption. In this paper, first, an original model was simulated by CATIA software, influence structural parameters Fluent software. simulation calculation results showed that: width spoke lengt...

Nowadays, non-pneumatic tires are becoming an increasingly likely alternative to pneumatic tires. The function of compressed air has been taken over by the belt and elastic structure (materials used shape components). research presented in paper was carried out quasi-static conditions. research's aim compare radial stiffness, hysteresis selected parameters contact patch two four interchangeably...

A numerical procedure has been applied for investigating the temperature distribution in a smooth tread bias tire of a light truck, operated under different speeds, pneumatic pressures, and loading conditions. Prior to simulation by the finite element analysis, two separate sets of testing, namely dynamic mechanical testing and material testing, have been conducted in relation to the evaluation...