IMECH-IR  > 流固耦合系统力学重点实验室
Numerical investigation of orthogonal cutting processes with tool vibration of Ti6Al4V alloy
Shuang F(双飞)1,2; Ma WI(马维i)1
Source PublicationProcedia CIRP
2019
Conference Name17th CIRP Conference on Modelling of Machining Operations, CIRP CMMO
Conference DateJune 13, 2019 - June 14, 2019
Conference PlaceSheffield, United kingdom
AbstractThis article investigates the vibration cutting process of Ti6Al4V alloy numerically and theoretically. The Coupling Eulerian-Lagrangian finite element models with one-tool and double-tool are established, to simulate the cutting processes with tool forced vibration and self-exited vibration respectively. It is shown that low-frequency forced vibration aggravates the periodic shear banding instability and increases the cutting force amplitude, whereas high-frequency forced vibration can improve the machined quality. Furthermore, the self-exited vibration due to fluctuating cutting thickness with low frequency promotes the shear banding evolution in chip. The self-exited vibration stability limit is found dependent on the frictional behavior, penetration resistance and the inherent vibration sources of tool-workpiece system. These simulation results show good agreement with theoretical models, which provide practical guidelines for improving vibration machining. © 2019 The Authors. Published by Elsevier B.V. Peer-review under responsibility of the scientific committee of The 17th CIRP Conference on Modelling of Machining Operations
KeywordForced vibration Self excited vibrations Shear banding Stability limit Vibration cutting
Funding OrganizationThis work was supported by the National Nature Science Foundation of China (Grant numbers 11572337, 11772346).
Indexed ByEI
Language英语
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/80464
Collection流固耦合系统力学重点实验室
Affiliation1.Institute of Mechanics, Chinese Academy of Sciences, Beijing; 100190, China;
2.Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville; FL; 32611-6250, United States
Recommended Citation
GB/T 7714
Shuang F,Ma WI. Numerical investigation of orthogonal cutting processes with tool vibration of Ti6Al4V alloy[C]Procedia CIRP,2019.
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