Optimizing the spatial distribution of damping in structures with boundary damping

J. Gregory McDaniel, Andrew S. Wixom

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The present work seeks to optimize the spatial distribution of damping in structures with boundary damping. This work is motivated by design considerations, such as weight and cost, that often limit the amount of damping that can be used. In such cases, the designer must choose the spatial distribution of damping in order to reduce the structural vibration. One intuitively expects that the presence of boundary damping affects the optimal distribution of damping in the structure. In particular, one expects that the optimal design places damping treatments away from such boundaries in order to achieve an even distribution of power flow from the structure. To investigate this effect, finite element models of vibrating structures are developed in which the spatial distribution of damping is parameterized. These parameters are regarded as optimization parameters that are searched to minimize a cost function related to vibration or noise, such as the average response of the structure over a frequency band. Examples are presented that illustrate the effect of boundary damping on the optimal distribution of damping.

Original languageEnglish (US)
Title of host publicationASME 2012 Noise Control and Acoustics Division Conference at InterNoise 2012, NCAD 2012
Pages453-456
Number of pages4
DOIs
StatePublished - Dec 1 2012
EventASME 2012 Noise Control and Acoustics Division Conference at InterNoise 2012, NCAD 2012 - New York City, NY, United States
Duration: Aug 19 2012Aug 22 2012

Publication series

NameAmerican Society of Mechanical Engineers, Noise Control and Acoustics Division (Publication) NCAD

Other

OtherASME 2012 Noise Control and Acoustics Division Conference at InterNoise 2012, NCAD 2012
CountryUnited States
CityNew York City, NY
Period8/19/128/22/12

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering
  • Acoustics and Ultrasonics

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