Modeling of wind-induced vibration control and energy harvesting of traffic signal structures

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

Abstract

Traffic signal support structures are slender, highly flexible, and lightly damped. Therefore, they are particularly susceptible to wind-induced vibrations, which result in repeated load stresses and fatigue failures. A tuned energy harvesting inerter damper (TEHID)is proposed to reduce wind-induced vibrations of traffic signal support structures and convert the wasted vibration energy into electricity. The TEHID creates a large inertia mass by converting the low-frequency vibration motion of the light head to a high-speed rotation thereby eliminating the need for a large physical mass and accommodation space required by the conventional tuned mass damper (TMD). This paper focuses on the nonlinear dynamics modeling of the wind-induced vibration control and energy harvesting system for traffic signal support structures. The traffic signal structure is modeled as an L-shaped beam with multi-segments and the TEHID is simplified as a three-element device consisting of a spring, a damper, and an inerter. The nonlinear equations and the boundary conditions governing the motion of the integrated vibration control and energy harvesting system are derived from the energy method and presented herein. Modal analysis is conducted and the derived natural frequencies and mode shapes are compared with the finite element simulation results to validate the analytical model.

Original languageEnglish (US)
Title of host publicationActive and Passive Smart Structures and Integrated Systems XVII
EditorsJinkyu Yang
PublisherSPIE
ISBN (Electronic)9781510660731
DOIs
StatePublished - 2023
EventActive and Passive Smart Structures and Integrated Systems XVII 2023 - Long Beach, United States
Duration: Mar 13 2023Mar 16 2023

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12483
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceActive and Passive Smart Structures and Integrated Systems XVII 2023
Country/TerritoryUnited States
CityLong Beach
Period3/13/233/16/23

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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