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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: Toroidal CVT Conjugate theory Speed ratio model Elastic
contact FEM
CLC No: TH132.32
国家自然科学基金(50122151)和重庆市科委(200307)资助项目.
Received 20040613, received in revised form 20041022
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