Vibration Control of Stiff Beams and Plates Using Structurally Integrated PZT Stack Actuators

Redmond, James M.; Barney, P.

doi:10.1177/1045389x9700800605

Cited by 11 publications

(4 citation statements)

References 13 publications

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“…A two-point preloaded mounting scheme allows positive and negative control moments while shielding the actuators from harmful tensile stresses. The efficacy of this approach for controlling bending vibrations of thick bar and plate like structures has been previously verified (Redmond and Barney, 1997).…”

Section: Introductionmentioning

confidence: 89%

“…Mounted in material cutouts offset from the neutral axis, the actuators induce bending moments in the bar through their extensional deformation. While the coupling mechanism is only summarized here, a more thorough description can be found in previous publications (Redmond and Barney, 1997).…”

Section: Actuator Integrationmentioning

confidence: 99%

“…The resulting coupling of the tangential and normal vibrations can then become problematic, since the tangential component of the cutting force is much larger than the radial component. The impact of variations in the bar's dynamics resulting from inconsistent mounting can be minimized by mounting as few as two actuators orthogonal to each other (Redmond et al, 1997). For the prototype bar, two actuators are mounted along the non tangential directions relative to the workpiece surface.…”

Section: Actuator Integrationmentioning

confidence: 99%

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A Bi-Axial Active Boring Tool for Chatter Mitigation

Redmond

Barney

1998

Adaptive Structures and Material Systems

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This paper summarizes results of metal cutting tests using an actively damped boring bar to suppress regenerative chatter. PZT stack actuators were integrated into a commercially available two-inch diameter boring bar to suppress bending vibrations. Since the modified tool requires no specialized mounting hardware, it can be readily mounted on a variety of machines. A cutting test using the prototype bar to remove metal from a hardened steel workpiece verifies that the actively damped tool yields significant vibration reduction and improved surface finish as compared to the open-loop case. In addition, the overall performance of the prototype bar is compared to that of an unmodified bar of pristine geometry, revealing that a significant enlargement of the stable machining envelope is obtained through application of feedback control.

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Section: Introductionmentioning

confidence: 89%

Section: Actuator Integrationmentioning

confidence: 99%

Section: Actuator Integrationmentioning

confidence: 99%

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A Bi-Axial Active Boring Tool for Chatter Mitigation

Redmond

Barney

1998

Adaptive Structures and Material Systems

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“…To facilitate understanding of this coupling mechanism, a simple model for the actuatorbar interaction is now developed (Ref. 14).…”

Section: Actuation Methodologmentioning

confidence: 99%

Development and testing of an active boring bar for increased chatter immunity

Redmond¹,

Barney²

1997

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Recent advances in smart materials have renewed interest in the development of improved manufacturing processes featuring sensing, processing, and active control. In particular, vibration suppression in metal cutting has received much attention because of its potential for enhancing part quality while reducing the time and cost of production. Although active tool clamps have been recently demonstrated, they are often accompanied by interfacing issues that limit their applicability to specific machines.Under the auspices of the Laboratory Directed Research and Development program, the project titled "Smart Cutting Tools for Precision Manufacturing" developed an alternative approach to active vibration control in machining. Using the boring process as a vehicle for exploration, a commercially available tool was modified to incorporate PZT stack actuators for active suppression of its bending modes. Since the modified tool requires no specialized mounting hardware, it can be readily mounted on many machines. Cutting tests conducted on a horizontal lathe fitted with a hardened steel workpiece verify that the actively damped boring bar yields significant vibration reduction and improved surface finishes as compared to an unmodified tool.

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Effect of porosity on active damping of geometrically nonlinear vibrations of a functionally graded magneto-electro-elastic plate

Esayas

Kattimani

2022

Defence Technology

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Vibration Control of Stiff Beams and Plates Using Structurally Integrated PZT Stack Actuators

Cited by 11 publications

References 13 publications

A Bi-Axial Active Boring Tool for Chatter Mitigation

A Bi-Axial Active Boring Tool for Chatter Mitigation

Development and testing of an active boring bar for increased chatter immunity

Effect of porosity on active damping of geometrically nonlinear vibrations of a functionally graded magneto-electro-elastic plate

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