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Analysis on Free Vibration and Stability of Rotating Composite Milling Bar with Large Aspect Ratio

1
College of Energy and Mining Engineering, Shandong University of Science and Technology, Qingdao 266500, China
2
College of Mechanical and Electronic Engineering, Shandong University of Science and Technology, Qingdao 266500, China
*
Author to whom correspondence should be addressed.
Appl. Sci. 2020, 10(10), 3557; https://doi.org/10.3390/app10103557
Received: 29 March 2020 / Revised: 17 May 2020 / Accepted: 19 May 2020 / Published: 21 May 2020
(This article belongs to the Section Mechanical Engineering)
The free vibration behavior and stability of composite milling bar with large aspect ratio are analyzed. Specifically, the free vibration equations are derived based on Euler Bernoulli beam theory and Hamilton’s principle and solved by Galerkin method. In addition, to investigate the stability of the cutting system with a rotating composite milling bar, this study develops an analytical model for regeneration and cutting force fluttering, in which the internal damping, external damping, gyroscopic effect, and inertial effect are considered. The subsequent stability lobes are obtained by the time domain method. Then, the stability of composite and conventional metal milling bar is compared. The effects of internal damping, external viscous damping, ply angle, gyroscopic effect, and inertial effect on cutting stability are analyzed. View Full-Text
Keywords: milling bar; composite; large aspect ratio; vibration and stability; Euler Bernoulli beam theory milling bar; composite; large aspect ratio; vibration and stability; Euler Bernoulli beam theory
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MDPI and ACS Style

Ma, J.; Xu, J.; Ren, Y. Analysis on Free Vibration and Stability of Rotating Composite Milling Bar with Large Aspect Ratio. Appl. Sci. 2020, 10, 3557.

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