Open Access

TUTORIAL

Loss Factors and their Effect on Resonance Peaks in Mechanical Systems

by Roman Vinokur^*

Independent Consultant, Woodland Hills, San Diego, 91367, USA

* Corresponding Author: Roman Vinokur. Email:

(This article belongs to the Special Issue: Passive and Active Noise Control for Vehicle)

Sound & Vibration 2023, 57, 1-13. https://doi.org/10.32604/sv.2023.041784

Received 06 May 2023; Accepted 28 June 2023; Issue published 26 July 2023

Abstract

The loss factors and their effects on the magnitude and frequency of resonance peaks in various mechanical systems are reviewed for acoustic, vibration, and vibration fatigue applications. The main trends and relationships were obtained for linear mechanical models with hysteresis damping. The well-known features (complex module of elasticity, total loss factor, etc.) are clarified for practical engineers and students, and new results are presented (in particular, for 2-DOF in-series models with hysteresis friction). The results are of both educational and practical interest and may be applied for NVH analysis and testing, mechanical and aeromechanical design, and noise and vibration control in buildings.

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Keywords

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