The design of isolation mounts is of critical importance in the protection of structures and sensitive equipment from damage or failure. Simultaneous protection from both shock and vibration is particularly challenging because of the broadband nature of the input signal and because of the deleterious effect of damping on high-frequency isolation. Prior work by the authors has shown that chains of translating and rotating mass/spring elements can act as a “mechanical filter” for input disturbances. If designed correctly, the isolator is able to trap some of the input energy into rotational vibration, preventing it from damaging the structure. However, in finite-length chains, wave reflections can result in secondary pulses that hit the structure and can diminish the effectiveness of the isolator. In this paper, the design of dynamic isolation mounts is improved using an optimization technique. Numerical simulations are performed using a parametric model of the new mount design. The simulated annealing optimization algorithm is used to determine the optimal system parameters for a given chain length. It is shown that the optimized system is able to achieve significant performance improvements. It is also shown that dynamic mounts that allow rotational movement of internal elements outperform optimized purely translational-motion systems.
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ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
August 21–24, 2016
Charlotte, North Carolina, USA
Conference Sponsors:
- Design Engineering Division
- Computers and Information in Engineering Division
ISBN:
978-0-7918-5020-6
PROCEEDINGS PAPER
Optimization of Vibration Isolation Mounts With Internal Rotation in Response to Shock Type Inputs
Eric Smith,
Eric Smith
Georgia Institute of Technology, Atlanta, GA
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Aldo Ferri,
Aldo Ferri
Georgia Institute of Technology, Atlanta, GA
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Griffin Schmitt
Griffin Schmitt
Georgia Institute of Technology, Atlanta, GA
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Eric Smith
Georgia Institute of Technology, Atlanta, GA
Aldo Ferri
Georgia Institute of Technology, Atlanta, GA
Griffin Schmitt
Georgia Institute of Technology, Atlanta, GA
Paper No:
DETC2016-59428, V008T10A050; 10 pages
Published Online:
December 5, 2016
Citation
Smith, E, Ferri, A, & Schmitt, G. "Optimization of Vibration Isolation Mounts With Internal Rotation in Response to Shock Type Inputs." Proceedings of the ASME 2016 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. Volume 8: 28th Conference on Mechanical Vibration and Noise. Charlotte, North Carolina, USA. August 21–24, 2016. V008T10A050. ASME. https://doi.org/10.1115/DETC2016-59428
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