• CN：11-2187/TH
  • ISSN：0577-6686
机械工程学报

›› 2005, Vol. 41 ›› Issue (5): 10-14.

• 论文 • 上一篇    下一篇

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环面型无级变速传动的速比建模与应力分析

秦大同;石万凯;杨长祺;拉贝尔   

  1. 重庆大学机械传动国家重点实验室
  • 发布日期:2005-05-15

SPEED RATIO MODEL AND STRESS ANALYSIS ON TOROIDAL CVT

Qin Datong;Shi Wankai;Yang Changqi;Nabil   

  1. State Key Laboratory of Mechanical Transmission, Chongqing University
  • Published:2005-05-15

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摘要： 利用非定轴空间点啮合理论分析了环面型牵引式无级变速传动的速比变化过程，并由此建立了调速油缸的行程与速比之间的对应关系模型，该模型为速比的精确控制奠定了基础。在考虑切向牵引力对接触区域的影响条件下，采用三维弹性接触有限元法分析了接触区内的接触应力和子表面切应力的分布状况，该分析结果可用于动力传动单元的接触疲劳寿命设计。

关键词: 弹性接触有限元, 环面型牵引式CVT, 啮合理论, 速比模型, Byrnes-Isidori标准型, 集成式电子液压制动系统, 液压力控制

Abstract: The shift process of toroidal CVT is analyzed by means of the point meshing theory with non-fixed shaft. The model of speed ratio in terms of the displacement of hydraulic cylinder is established and can be used to realize accurate control of speed ratio of CVT. In order to consider the influence of tangential traction force on the contact zone the 3-D elastic contact FEM is utilized to analyze contact stress in the contact zone and shear stress in sub-surfaces. The analysis results are beneficial for calculation of rolling contact fatigue life.

Key words: Conjugate theory, Elastic contact FEM, Speed ratio model, Toroidal CVT, Byrnes-Isidori normalized form, Hydraulic pressure control, Integrated-Electro-Hydraulic brake system

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