Damping capacity improvement of machine structures by close packing with balls

Wakasawa, Yasunori; Hashimoto, Minoru; Marui, Etsuo

doi:10.1016/s0890-6955(01)00143-2

Cited by 4 publications

(6 citation statements)

References 8 publications

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“…In a previous study [7], it was found that damping capacity was not sufficiently improved at some ball sizes in close packing. Excitation of structure is necessary for close packing, however, this process is troublesome.…”

Section: Effect Of Packing Ratio and Impulsive Forcementioning

confidence: 88%

“…1 shows the experimental apparatus of this study. The fundamental structure of this apparatus is the same as that of a previous study [7]. Model structures were suspended by stainless steel wires at the position of nodes of the fundamental vibration mode, and the center was impacted by an impulsive hammer.…”

Section: Experimental Apparatus and Methodsmentioning

confidence: 99%

“…inner surface of the square pipe. It has been clarified in a previous report [7] that the damping ratio could be successfully regulated by the values of the repulsion coefficient for glass balls of different diameters closely packed in structures. However, the damping capacity can be reasonably understood in terms of the specific gravity of the packed balls, as seen when balls of the same size and different material were packed at a 50% packing ratio.…”

Section: Observation Of Packed Ball Movementmentioning

confidence: 97%

“…The authors have investigated the damping capacity improvement of machine tool structures utilizing closely packed glass balls [7]. The effects of ball size, ball arrangement and excitation direction on damping characteristics were examined in an experiment of impulsive excitation.…”

Section: Introductionmentioning

confidence: 99%

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The damping capacity improvement of machine tool structures by balls packing

Wakasawa

Hashimoto

Marui

2004

International Journal of Machine Tools and Manufacture

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Section: Effect Of Packing Ratio and Impulsive Forcementioning

confidence: 88%

Section: Experimental Apparatus and Methodsmentioning

confidence: 99%

Section: Observation Of Packed Ball Movementmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The damping capacity improvement of machine tool structures by balls packing

Wakasawa

Hashimoto

Marui

2004

International Journal of Machine Tools and Manufacture

Self Cite

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“…Different from the impact transient testing through a hammer, 3,9,[12][13][14] the sweep frequency testing 15,16 can provide a larger and constant excitation force. Here, the sweep frequency testing is applied in the experiment.…”

Section: Vibration Generation Systemmentioning

confidence: 99%

Improvement of the damping capacity of the linear damper with an oil groove in the linear guideway system

Feng

Chen

et al. 2017

Advances in Mechanical Engineering

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This article presents an experimental investigation into the damping characteristics of a linear damper with a newly designed oil groove. The damping performance of the damper is tested in four different viscosity grades by the sweep frequency method. And a test bench is used to move the damper for a several kilometers to examine the damping maintenance. The experimental results show that a higher oil viscosity leads to a higher damping capacity of the linear damper, and the increase in the oil viscosity will improve the damping maintenance of the damper. The newly designed oil groove efficiently improved the damping capacity of the linear damper; a proper oil selection will further optimize the effect of the oil groove via minimizing the oil leakage.

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Dynamics of machine tool drive housings

Mohan

Srinivasan

Ramamurti

2010

Proceedings of the Institution of Mechanical Engineers, Part B:

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A review of available literature on machine tool transmission housings with specific reference to structural vibration, chatter analysis, and noise radiation is presented in this paper. Housings include gearboxes and structures supporting other transmission elements like vee pulleys, impellers, and motor shafts. Analytical and experimental methodologies reported in the recent past for strength, vibration and noise analysis, mounts and suspension, structural optimization, overall drive and housing systems are discussed. Typical design guidelines, as outlined by various investigators, are included. Future research trends are also indicated.

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Damping capacity improvement of machine structures by close packing with balls

Cited by 4 publications

References 8 publications

The damping capacity improvement of machine tool structures by balls packing

The damping capacity improvement of machine tool structures by balls packing

Improvement of the damping capacity of the linear damper with an oil groove in the linear guideway system

Dynamics of machine tool drive housings

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