Validation of a Tapered Impact Damper for Traffic Signal Structure Vibrations Using the Method of Harmonic Balance

Ganci, Claire; Kuether, R.; Hurlebaus, S.

doi:10.1007/s40799-024-00743-8

Validation of a Tapered Impact Damper for Traffic Signal Structure Vibrations Using the Method of Harmonic Balance

Journal Article · Fri Sep 20 00:00:00 EDT 2024 · Experimental Techniques

DOI:https://doi.org/10.1007/s40799-024-00743-8· OSTI ID:2447349

^[1]; Kuether, R. ^[2]; ^[1]

Texas A & M Univ., College Station, TX (United States)
Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Significant vibration amplitudes and cycles can be produced when traffic signal structures with low inherent damping are excited near one of their natural frequencies. For the mitigation of wind-induced vibrations, dynamic vibration absorbers coupled to the structure are often used. Here, this research investigates the performance of a tapered impact damper, consisting of a hanging spring-mass oscillator inside a housing capable of reducing vibration amplitude over a broader frequency range than the conventional tuned mass damper. A nonlinear, two degree-of-freedom model is developed with coordinates representing the traffic structure and the tapered impact damper. This research focuses on the application of the harmonic balance method to approximate the periodic solutions of the nonlinear equations to compute the nonlinear dynamics of the damped traffic signal structure. After designing and manufacturing a tapered impact damper, the traffic signal structure is tested with and without the damper using free vibration snapback tests. The experimental frequency and damping backbone curves are used to validate the analytical model, and the effectiveness of the damper is discussed.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: NA0003525

OSTI ID:: 2447349

Report Number(s):: SAND--2024-12487J

Journal Information:: Experimental Techniques, Journal Name: Experimental Techniques Vol. 49; ISSN 0732-8818

Publisher:: WileyCopyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

42 ENGINEERING
Structural vibrations
harmonic balance method
impact damper
nonlinear dynamics
passive vibration reduction
traffic signal structures

Validation of a Tapered Impact Damper for Traffic Signal Structure Vibrations Using the Method of Harmonic Balance

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