Numerical analysis of running tire uneven wear under curved complex condition(PDF)
长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]
- Issue:
- 2017年03期
- Page:
- 113-118
- Research Field:
- 汽车与机械工程
- Publishing date:
Info
- Title:
- Numerical analysis of running tire uneven wear under curved complex condition
- Author(s):
- DU Zi-xue; CHEN Liang; WEN Xiao-xia
- School of Mechanotronics & Vehicle Engineering, Chongqing Jiaotong University, Chongqing 400074, China
- Keywords:
- automobile engineering; straddle-type monorail vehicle; numerical analysis; running tire; friction work; uneven wear
- PACS:
- U463.341
- DOI:
- -
- Abstract:
- Under curved complex condition, the uneven wear of straddle-type monorail vehicle running tire is serious. Uneven wear will not only increase operating costs, but also affect the safety of monorail vehicles. For this problem, a finite element model of tire and rail contact was established. Validity of the model was verified by comparing stiffness of experimental values with simulation values of running tire in three directions. Parameters of curved complex conditions were obtained from dynamic simulation model of monorail vehicle. By using numerical method, two ground states named relative slip and ground pressure of tire were analyzed under curved complex condition. Wear and uneven of running tire wear were evaluated by using total friction work and its skewness. Distribution rule of friction work, total friction work and friction work skewness were obtained. The results show that relative slip values of running tire is larger in the front left and right of tire shoulder, and average relative slip values of longitudinal nodes are larger in both ends and smaller in the middle along transverse direction. Ground pressure of running tire is symmetrically distributed in longitudinal direction. The larger values appear in tire shoulder of rolling side. Ground pressure of center nodes along transverse direction have a distribution rule of decreasing at first, then keeping constant, and increasing rapidly near rolling side. Friction work distribution of running tire is irregular, larger values appear in rolling side, and the total friction work of longitudinal nodes along transverse direction have a distribution rule of decreasing at first, then increasing slowly, and growing exponentially near the rolling side. Total value of friction work and skewness of friction work are very large. The rolling is one of the main reasons caused running tire uneven wear. Wear of running tire in rolling side is larger than that in other parts, and there is a serious uneven wear in rolling side. The uneven wear rule of running tire in a corner provides a theoretical basis for how to reduce uneven wear and improve service life of running tire.
Last Update: 2017-06-06