Low frequency vibration testing of a pedestrian walkway with an active Force-Frequency Shifting shaker

Christopher J. Hudson, Martin W. Trethewey, Leonard L. Koss

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

Abstract

A novel approach known as Force Frequency Shifting (FFS) has been under development for low frequency (less than 1 Hz) vibration excitation of large structures (i.e., buildings, bridges, stadiums, ballroom floors, etc.). Work to date has focused upon modeling, analysis, and evaluation to describe and optimize the system design. This development effort has produced a laboratory tabletop scale prototype utilizing an actively controlled magneto-rheological fluid damper for evaluation purposes. In this work, the low frequency excitation capabilities of the prototype active FFS shaker system will first be evaluated. Secondly, the prototype shaker will be used to perform modal analysis test of a pedestrian walkway with natural frequencies below 15 Hz. The outcomes are used to assess the applicability of the novel shaker system for low frequency modal testing.

Original languageEnglish (US)
Title of host publicationIMAC-XXVI
Subtitle of host publicationConference and Exposition on Structural Dynamics - Technologies for Civil Structures
StatePublished - Dec 1 2008
Event26th Conference and Exposition on Structural Dynamics 2008, IMAC-XXVI - Orlando, FL, United States
Duration: Feb 4 2008Feb 7 2008

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Other

Other26th Conference and Exposition on Structural Dynamics 2008, IMAC-XXVI
CountryUnited States
CityOrlando, FL
Period2/4/082/7/08

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Computational Mechanics
  • Mechanical Engineering

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