the natural frequencies and mode shapes of pneumatic tires are predicted using a geometrically accurate, three-dimensional finite element modeling. tire rubber materials and cord layers are represented independently using “shell element” available in cosmos. the effects of some physical parameters such as the inflation pressure tread pattern, thickness of belts and ply angles to the natural fre...

This article studies the influence of speed a car with low and ultra-low profile tires, 14ʹʹ 16ʹʹ, negotiating turn through an interactive software system developed by us in MATLAB environment. The changes normal lateral loads wheels are obtained characteristics side slip angle (known as slip) pneumatic tires determined. Taking into account wheels, determines center turn. for both types given. ...

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...

Compared with pneumatic tires, non-pneumatic tires have incomparable performance, in terms of load bearing and safety. In this paper, the static characteristics pure longitudinal slip tire are studied by combining experiments simulations. The test results show that radial stiffness original structure is nonlinear, sliding seriously inconsistent, brakes very sensitive, driving slightly soft. A s...

In this paper, dynamics, postural stability and control of suspended wheeled mobile manipulators for cooperative heavy object manipulation are elaborated considering the effect of grasping posture. The presented model considers a system equipped with multiple manipulators with flexible suspension, which also contains an accurate nonlinear behavior of the tires. Moreover, it includes the vibrato...

Often when vehicles interact with roadside hardware like guardrails, bridge rails and curbs, the interaction between the roadside hardware and the tire causes the tire to lose its air seal and "blow-out". Once the seal between the rim and rubber tire is lost, the tire deflates. The behavior of the deflated tire is much different than the behavior of an inflated tire such that when this behavior...

The purpose of this document is to describe important tire characteristics and their effect on vehicle performance. Characteristics considered are those that the Formula SAE judges have deemed important for discussion on tires at competition and include coefficient of friction, slip angle, slip ratio, camber angle, cornering stiffness, camber stiffness, self-aligning torque, normal load sensiti...