Feasibility study on the efficiency of parametric damping for attenuation of environmental noise

Rodolfo Diaz, Robert L. Petrisko

Research output: Contribution to conferencePaper

Abstract

A new semi-active damping approach for the reduction of transmitted acoustic noise is investigated. It involves the controlled variation of the system's spring constant in response to the system's motion in such a way as to maximize the energy lost in the damping elements. A Discrete Mechanics simulation of a prototypical spring-mass-damper system is used to compare the performance of this approach with the semi-active viscous damping approach being applied to this problem today. It is found that: (1) Parametric damping does not require precise phase matching between the noise signal and the response of the system. (2) "Runaway" catastrophes associated with the nonlinear response of the spring constant are avoided by saturating the response of the spring. (3) An algorithm that controls the response of the element by recognizing when it is storing undesired energy suffices to attenuate harmonic and transient noise below 1:1 transmissibility for all frequencies at and below resonance.

Original languageEnglish (US)
DOIs
StatePublished - Dec 1 2000
Event9th Congresso e Exposicao Internacionais da Tecnologia da Mobilidade - Sao Paulo, Brazil
Duration: Oct 3 2000Oct 3 2000

Other

Other9th Congresso e Exposicao Internacionais da Tecnologia da Mobilidade
CountryBrazil
CitySao Paulo
Period10/3/0010/3/00

Fingerprint

Damping
Phase matching
Acoustic noise
Mechanics

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering

Cite this

Diaz, R., & Petrisko, R. L. (2000). Feasibility study on the efficiency of parametric damping for attenuation of environmental noise. Paper presented at 9th Congresso e Exposicao Internacionais da Tecnologia da Mobilidade, Sao Paulo, Brazil. https://doi.org/10.4271/2000-01-3262

Feasibility study on the efficiency of parametric damping for attenuation of environmental noise. / Diaz, Rodolfo; Petrisko, Robert L.

2000. Paper presented at 9th Congresso e Exposicao Internacionais da Tecnologia da Mobilidade, Sao Paulo, Brazil.

Research output: Contribution to conferencePaper

Diaz, R & Petrisko, RL 2000, 'Feasibility study on the efficiency of parametric damping for attenuation of environmental noise' Paper presented at 9th Congresso e Exposicao Internacionais da Tecnologia da Mobilidade, Sao Paulo, Brazil, 10/3/00 - 10/3/00, . https://doi.org/10.4271/2000-01-3262
Diaz R, Petrisko RL. Feasibility study on the efficiency of parametric damping for attenuation of environmental noise. 2000. Paper presented at 9th Congresso e Exposicao Internacionais da Tecnologia da Mobilidade, Sao Paulo, Brazil. https://doi.org/10.4271/2000-01-3262
Diaz, Rodolfo ; Petrisko, Robert L. / Feasibility study on the efficiency of parametric damping for attenuation of environmental noise. Paper presented at 9th Congresso e Exposicao Internacionais da Tecnologia da Mobilidade, Sao Paulo, Brazil.
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