Abstract
This paper deals with a nonstationary vibration of a flexible rotating shaft with nonlinear spring characteristics. Especially, we investigate a phenomenon during constant acceleration and deceleration passing through a critical speed of a 1/2-order subharmonic oscillation of forward precession. In numerical simulation, we examined the influence of the angular acceleration λ and the initial angular position ψ0 of a rotor unbalance on the maximum amplitude of the subharmonic oscillation. As a result, the followings are clarified : (1) in order to always pass through this critical speed with a finite amplitude during acceleration, an angular acceleration greater than a certain value λ0 is necessary, (2) the maximum amplitude depends on ψ0 markedly, and (3) whether the shaft can pass through this critical speed or not depends on ψ0 when 0 < λ < λ0. We ascertained the validity of these theoretical results by experiments.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
