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ARTICLE
The specific dynamic capacity of a planetary roller screw with random deviations of a thread pitch
| 1 | Cracow University of Technology, Institute of Machine Design, Cracow |
Submission date: 2016-04-11
Acceptance date: 2017-04-06
Online publication date: 2017-07-15
Publication date: 2017-07-15
Journal of Theoretical and Applied Mechanics 2017;55(3):991–1001
KEYWORDS
ABSTRACT
The paper presents an analysis of the specific dynamic capacity of a planetary roller screw
including random deviations of the thread pitch. Results are based on a statistical analysis
of loads between the screw and the roller obtained for the accepted bar model to determine
the load distribution. Furthermore, the finite element analysis has been applied to determine
stiffness coefficients of the screw-roller and the roller-nut cooperation. The purpose of
the following considerations is to assess a decrease in the specific dynamic capacity of the
planetary roller screw depending on random deviations of the thread pitch.
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