Abstract
In this study, the two key factors affecting the thermal performance of the insert rubber and stress distribution on the tire sidewall were analyzed extensively through various performance tests and simulations to promote the development of run-flat tires. Four compounds and two structures of insert rubber were designed to investigate the effects of heat accumulation and stress distribution on durability testing at zero pressure. It was concluded that the rigidity and tensile strength of the compound were negatively correlated with temperature. The deformation was a key factor that affects energy loss, which could not be judged solely by the loss factor. The stress distribution, however, should be considered in order to avoid early damage of the tire caused by stress concentration. On the whole, the careful balance of mechanical strength, energy loss, and structural rigidity was the key to the optimal development of run-flat tires. More importantly, the successful implementation of the simulations in the study provided important and useful guidance for run-flat tire development.
Highlights
The difference of heat generated at the sidewall between T-1 and T-2 was minimal, an analysis of the strain energy density of bead apex and insert rubber of tire shown in Figure 5 suggested that the stress concentration in T-2 may lead to early tire failure
1 h 50 min According to the study, a successful attempt was made to employ simulation methods to study the key factors to be considered in the development of run-flat tires
The effects of heat and stress concentration on the zero-pressure durability of tires were studied by designing different components with different stiffness, heat generation and shape to change the stiffness of tire sidewall
Summary
Deflated tires on vehicles can potentially have serious safety implications to both the occupants in the vehicle as well to other road users. Many attempts have been made to investigate and optimize the properties of the tire self-supporting reinforced sidewall, based on the structure of the tire and insert rubber, including shape, thickness, compound, and flexion heat-generating properties of the insert rubber. The properties of the insert rubber the tire self-supporting reinforced sidewall, based on the structure of the tire and insert required higher rigidity for structural support, and a higher degree of flexrubber, including shape, thickness, compound, and flexion heat-generating properties of ural resistance [9,10]. These two properties were usually contradictory to the insert rubber. Pounds to further verify the correlation between the simulation results and tire performechanical tests were carried out for two structures and four insert rubber compounds to mance.verify the correlation between the simulation results and tire performance
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
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 call
