Optical table with embedded active vibration dampers (smart table) as an educational tool in structural acoustics and vibration

2006 ◽  
Vol 119 (5) ◽  
pp. 3381-3382
Author(s):  
Vyacheslav M. Ryaboy
Keyword(s):  
Structural Acoustics ◽  
Educational Tool ◽  
Optical Table ◽  
Active Vibration ◽  
Vibration Dampers

Optical table with embedded active vibration dampers (smart table)

2005 ◽  
Author(s):  
Vyacheslav M. Ryaboy ◽  
Prakash S. Kasturi ◽  
Adrian S. Nastase ◽  
Thomas K. Rigney
Keyword(s):  
Optical Table ◽  
Active Vibration ◽  
Vibration Dampers

scholarly journals Performance of a Suspension Bridge with Active Vibration Dampers

2018 ◽  
Vol 196 ◽  
pp. 01017
Author(s):  
Anatolij Konovalov ◽  
Marina Pustovalova
Keyword(s):  
Cross Sections ◽  
Dynamic Properties ◽  
Suspension Bridge ◽  
Suspension Bridges ◽  
Initial Model ◽  
Strain Behavior ◽  
Pedestrian Bridges ◽  
Active Vibration ◽  
Active Damper ◽  
Vibration Dampers

Suspended structures that are used extensively in construction of motorway and pedestrian bridges allow bridging wide spans without having to install intermediate supports. Being less stiff in comparison to girder and arch bridges, suspension bridges require their dynamic properties to be controlled [1, 2]. This is a vital task when it comes to suspension bridges. Several engineering arrangements are available to control the dynamic properties of the structures [3]. This paper addresses the use of active dampers [4] installed on the tops of the towers as the means to control vibrations of a suspension bridge. To this end, a planar 3D model of suspension bridge was built using ANSYS software. The authors compared stress-strain behavior and dynamic properties of the models with and without active vibration dampers. In contrast to the initial model, the model of a bridge equipped with active dampers exhibits less displacement in all cross-sections. Thus, the displacements are reduced 1.7 times in the middle of the central span of suspended stiffening truss; 2.7 times in the middle of the end span; and displacements of the top of the bridge tower are 1.6 times less. The modal analysis has shown that in the model with active dampers the frequency of transverse vibrations at the tower tops has increased 1.9 times, while vertical vibrations have increased within 23%. Under maximum applied overpressure in the active damper, torsional vibrations of the structure have increased 2.4 times as compared to the initial model. The results obtained by the authors allow for the conclusion that active dampers are useful tools for controlling the dynamic properties of a suspension bridge.

scholarly journals Efficiency of active vibration dampers for ship structures

2019 ◽  
Vol 2 (388) ◽  
pp. 150-158
Author(s):  
V. Belov ◽  
◽  
A. Gladilin ◽  
V. Maslov ◽  
A. Petrov ◽  
...  
Keyword(s):  
Ship Structures ◽  
Active Vibration ◽  
Vibration Dampers

Stability and Effectiveness of Active Vibration Dampers

1963 ◽  
Vol 35 (5) ◽  
pp. 797-797
Author(s):  
James M. Lawther ◽  
Thomas H. Rockwell
Keyword(s):  
Active Vibration ◽  
Vibration Dampers

The Use of Supplementary Podcasting as an Instructional Tool in an Online Classroom Setting

2008 ◽  
Vol 11 (2) ◽  
pp. 61-66
Author(s):  
Jennifer C. Friberg
Keyword(s):  
Continuing Education ◽  
Teaching And Learning ◽  
Classroom Setting ◽  
Educational Tool ◽  
Instructional Tool ◽  
Online Classroom ◽  
Potential Applications ◽  
Education Tool ◽  
Professional Learners ◽  
Professional Disciplines

Abstract The use of podcasting is incredibly widespread, with experts estimating that 60 million Americans will be using podcasting in some form by 2010. The use of podcasting has grown beyond entertainment to become an educational tool, showing promise as a way to disseminate information and create networks of professional learners. However, despite the growing clinical and educational uses of podcasting in other professional disciplines, podcasting is being used primarily as a continuing education tool for speech-language pathologists and audiologists at this time. This article provides guidelines and examines the potential applications for use of podcasting in teaching and learning in communication sciences and disorders.

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