Abstract
As the main components of the rotor system of aero-engines and other rotating machinery equipment, the bladed disk system has high requirements on its structure design, safety and stability. Taking the rotor disk system of aero-engines as the research object, modal calculation of the rotor disk system was based on the group theory algorithm, and using the fine sand movement on the experimental disk to express the disk vibration shape. The experimental vibration mode is used to compare with the finite element calculation results to verify the reliability of the finite element analysis. Study on the effect of dissonance parameter changes on the bladed disk system vibration characteristics concluded that the vibration mode trends of the blisk system and the disc are, basically, consistent. As the mass of the blade increases, the modal frequencies of the entire blisk system gradually decrease, and the amplitude slightly increases. When the mass increases at different parts of the blade, the effect on the modal frequencies of the bladed disk system are not obvious. When the bladed disk system vibrates at low frequency, the disc will not vibrate and each blade will vibrate irregularly. The bladed disk should be avoided to work in this working area for a long time, so as not to cause fatigue damage or even fracture of some blades.
Highlights
As the main components of the rotor system of aero-engines and other rotating machinery equipment, the bladed disk system has high requirements on its structure design and safety stability
The results show that the proposed scheme can accurately describe the effect of dissonance on the structure vibration characteristics of the bladed disk system
Zhao et al [33,34,35] investigated free vibration behaviors of a functionally graded (FG) disk-shaft rotor system, which was reinforced with graphene nanoplatelets (GPL) resting on elastic supports
Summary
As the main components of the rotor system of aero-engines and other rotating machinery equipment, the bladed disk system has high requirements on its structure design and safety stability. Bladh et al [4] studied the forced response characteristics of the dissonant bladed disk using the reduced finite element model and found that the forced response of the bladed disk system with localized vibration mode would not necessarily increase significantly but might decrease. Wang [6] studied the localization problem of the inherent vibration of the bladed disk system by using the modeling method of centralized parameters on the bladed disk. Yu [12,13,14] established the finite element simulation model of the impeller, introduced the influence factors of wrong frequency, and analyzed the mode and probability response localization characteristics of the bladed disk system. Yuan et al [36,37] studied the optimization arrangement of vibration damping of dissonant bladed disk system by establishing a centralized parameter model. Proper blade arrangement can effectively reduce the amplitude of forced vibration of the bladed disk system and reduce the localization degree of system vibration
Sign-in/Register to view highlights & summary 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 callDisclaimer: 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.
