Firstly, the formula of tire wear is established considering temperature effect and the dynamic characteristics of vehicles. In addition, the effects of speed, ambient temperatures, tire pressure and sprung mass for tire wear are analyzed. Finally, the main impact factors of tire tread wear are obtained through the parameters sensitivity analysis. The results show that: the established model of tire wear is feasible, and the results can reflect the wear conditions of tires, which provides a theoretic foundation to predict tire wear for different types of tire under different running conditions.

No abstract

The addition of BMIPP data to the initially available clinical information adds incremental value toward the early diagnosis of an ACS, potentially allowing determination of the presence or absence of ACS to be made earlier in the evaluation process. (Safety and Efficacy Iodofiltic Acid I 123 in the Treatment of Acute Coronary Syndrome [Zeus-ACS]; NCT00514501).

No abstract

Starting from the analysis of tire ground contact characteristics, the formulas of ground contact patch of tires are obtained, which are verified by tests, and the calculation formula of lateral stiffness of tread element is determined using the energy method. On this basis, a dynamic model of tread's lateral vibration is established, and the effects of vehicle speed, vertical load and tire pressure are analyzed. The results show that: the lateral self-excited vibration will occur under certain conditions, and vehicle speed, vertical load and tire pressure have great influence on the vibration characteristics; the lateral self-excited vibration of tread is a kind of stable periodic vibration caused by Hopf bifurcation of system.