Work

Dynamic performance of an HSLDS-SMI isolator with primary mass variation

Year: 2025

Type: article

Abstract: The high-static-low-dynamic-stiffness (HSLDS) isolator is sensitive to mass deviation, which causes a shift in static equilibrium and results in softening of the dynamic response. This study introduces sliding mass inertia (SMI) to an HSLDS to mitigate the softening and enhance the dynamic performance of the system under mass deviation. The harmonic balance method (HBM) is employed to obtain the dynamic response of the vibrating system with the proposed nonlinear isolator. Key characteristics, such as the backbone curve, amplitude-frequency response, resonance peak, and displacement transmissibility are analyzed in detail through parametric analysis. The results indicate that mass deviation worsens the softening behavior of the HSLDS isolator. A higher mass deviation ratio results in an increase in both the amplitude and the resonance frequency of the system. Fortunately, however, the sliding mass eliminates the softening behavior, reduces the peak response, and improves the overall dynamic performance.

Source: Journal of low frequency noise, vibration and active control

DOI: 10.1177/14613484251383063

Authors: Muhammad Umair, Zhichao Hou

Institution: Tsinghua University

Language: English

Topic: Vibration Control and Rheological Fluids

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: gold

Estimated APC paid: $2,500