Development of new friction CVT and analysis of its improvement with stress and strain

ZENG Sheng-qi， YU Jin-song
（Department of Mechanical Engineering， Anhui Industry Polytechnic， Tongling 244000， China）

Abstract： In order to solve the problems of uneven stress at key points on some important parts of the single-roller friction continuously variable transmission（CVT） now commonly used in practice，it was developed that a new type of multi-roller friction CVT inspired by the structure of single-roller friction type CVT and using motion transmission by friction two times. Firstly，its transmission principle was introduced，and then four kinds of concrete possible structure was given out. At last，it was calculated and compared that the data of the stress and strain， and their cloud pictures in these key points with the finite element analysis software ANSYS used as an example. After analyzing the dates，the results indicate that their stress and strain conditions have been improved and the results show its advantages of the new type of CVT than the old one.
Key words： coutinuously variable transmission（CVT）； finite element analysis（FEA）； ANSYS； transmission calculation； stress and strain analysis