Performance of magnetorheological fluid based tunable frequency boring bar in chatter control

Measurement ◽  
2019 ◽  
Vol 140 ◽  
pp. 407-415 ◽  
Author(s):  
C.V. Biju ◽  
M.S. Shunmugam
Keyword(s):  
Magnetorheological Fluid ◽  
Boring Bar ◽  
Chatter Control ◽  
Tunable Frequency

System Identification for Boring Bar Chatter Control

1993 ◽  
Author(s):  
Jonathan A. Embry ◽  
Suzanne Weaver Smith ◽  
Bruce L. Walcott
Keyword(s):  
Aerospace Industry ◽  
Low Frequency ◽  
Structure Identification ◽  
Space Structures ◽  
Modal Interactions ◽  
Element Analysis ◽  
Flexible Space Structures ◽  
Boring Bar ◽  
Low Frequency Vibration ◽  
Chatter Control

Abstract The boring bar is used to provide smooth, accurate cuts in materials. However, when the length to diameter (L/D) ratio of the boring bar becomes large, low-frequency vibration, or chatter, results. Initial attempts to control this unwanted vibration with an active absorber have been successful, but in some configurations problems remain. In this paper, algorithms for flexible structure identification widely used in the aerospace industry are applied to a number of boring bar setups to identify the vibration characteristics of each system. Emphasis is placed on one class of methods which includes the Eigensystem Realization Algorithm (ERA), developed for identification of flexible space structures. The resulting identified characteristics are compared and contrasted. Results are also compared to finite element analysis predictions. From the current identification results, implications for chatter control are discussed, including the possibility of nonlinear modal interactions.

Chatter control and stability analysis in cantilever boring bar using FEA methods

2020 ◽  
Vol 33 ◽  
pp. 2577-2580
Author(s):  
Singaravelu Chockalingam ◽  
S. Ramabalan ◽  
K. Govindan
Keyword(s):  
Stability Analysis ◽  
Boring Bar ◽  
Chatter Control

scholarly journals Boring Bar Chatter Control using Feedback Filtered-x Normalized Least Mean Square Algorithm

2019 ◽  
Vol 52 (10) ◽  
pp. 358-363 ◽  
Author(s):  
Mohsen Fallah ◽  
Behnam Moetakef-Imani ◽  
Ali Hosseini ◽  
Mostafa Ebrahimi
Keyword(s):  
Mean Square ◽  
Least Mean Square ◽  
Boring Bar ◽  
Normalized Least Mean Square ◽  
Chatter Control ◽  
Least Mean Square Algorithm

Development of a Hydraulic Chambered, Actively Controlled Boring Bar

1979 ◽  
Vol 101 (3) ◽  
pp. 362-368 ◽  
Author(s):  
D. J. Glaser ◽  
C. L. Nachtigal
Keyword(s):  
Active Control ◽  
Small Amplitude ◽  
Research Work ◽  
Practical Method ◽  
Optimal Combination ◽  
Design Development ◽  
Boring Bar ◽  
Dynamic Cutting Force ◽  
Chatter Control ◽  
Actuation Scheme

A major problem in the active control of the boring process is developing a practical method of providing small-amplitude tool-tip positioning. The main thrust of the underlying research work is the design, development and evaluation of a new actuation concept for active control of the boring operation. The actuation concept was implemented using a special boring bar with two internal longitudinal hydraulic chambers. A pressure difference between these two chambers provides the driving force to create the desired tool-tip motion. Using a measure of the dynamic cutting force, the controlled boring bar system was successful in making improvements over the uncontrolled boring bar’s cutting performance in terms of regenerative chatter control. The cutting tests used in this thesis were plunge cuts in mild steel. The controlled level of improvement was smaller than was anticipated. The problem was considered not a fault of the actuation scheme, but a result of a non-optimal combination of the servovalve, measurement system and controller. Further work in these areas should yield considerably improved results using the new actuation concept.

Magnetorheological fluid-controlled boring bar for chatter suppression

2009 ◽  
Vol 209 (4) ◽  
pp. 1861-1870 ◽  
Author(s):  
Deqing Mei ◽  
Tianrong Kong ◽  
Albert J. Shih ◽  
Zichen Chen
Keyword(s):  
Magnetorheological Fluid ◽  
Boring Bar ◽  
Chatter Suppression

Research of Active Chatter Control for the Piezoelectric Intelligent Boring Bar with Distribution Quality

2014 ◽  
Vol 1030-1032 ◽  
pp. 1517-1520
Author(s):  
Xing Ke Cui ◽  
Rui Huo ◽  
Shu Ying Li ◽  
Cui Ping Liu ◽  
Dao Kun Zhang
Keyword(s):  
State Space ◽  
Dynamic Model ◽  
Stability Diagram ◽  
System Stability ◽  
Mass System ◽  
Boring Bar ◽  
Flutter Suppression ◽  
Chatter Control ◽  
The Stability ◽  
Space Equation

Seen as a cantilever beam with distributed mass system, the boring bar model and its state -space equation is built. On the basis of the dynamic model, a stability diagram of the boring system of the type of regenerative chatter is obtained. According to the stability diagram of the system, we get main analysis and comparison of the system stability near the fundamental frequency. In this paper, piezoelectric smart flutter suppression is carried out on a boring system with distributed mass, which improved the stability of the boring system

Dynamic analysis and vibration control of two-degree-of-freedom boring bar with fractional-order model of magnetorheological fluid

2021 ◽  
pp. 107754632110233
Author(s):  
Jian Hou ◽  
Jiangchuan Niu ◽  
Yongjun Shen ◽  
Shaopu Yang ◽  
Wanjie Zhang
Keyword(s):  
Analytical Solution ◽  
Vibration Control ◽  
Active Control ◽  
Relative Velocity ◽  
Averaging Method ◽  
Approximate Analytical Solution ◽  
Magnetorheological Fluid ◽  
Velocity Control ◽  
Boring Bar ◽  
Two Degree Of Freedom

The dynamic analysis and vibration control of a kind of damping boring bar system with magnetorheological fluid absorber are studied. A two-degree-of-freedom dynamic model of boring bar with magnetorheological fluid dynamic vibration absorber is established, in which the magnetorheological fluid damper adopts the fractional-order Bingham model. The forced vibration of the system is studied, and the approximate analytical solution is obtained by the averaging method. By comparing the analytical solution with the numerical solution, the accuracy of the analytical solution is proved by their high degree of fit. And the parameters of boring bar system are optimized by using the analytical solution. To reduce the amplitude of the system, a semi-active control strategy of modified relative velocity method is used to suppress the resonance response of the boring bar. Under the semi-active relative velocity control, the approximate analytical solution of the system is also obtained by means of averaging method. The stability of the system under semi-active control is analyzed by using the Lyapunov method. Compared with passive control, the semi-active relative velocity control has a very great effect on the vibration amplitude suppression. The results can provide a reference for the study of dynamics and vibration control of the systems with magnetorheological fluid control.

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