Work

Nonlinear anti-vibration compliant mechanism with inertia amplification

Year: 2024

Type: article

Abstract: This paper presents a novel nonlinear anti-vibration compliant mechanism with inertia amplification (NAVCM-IA) for low frequency vibration isolation. This compliant mechanism consists of three-dimensional helical rods with stiffness nonlinearities, and an attached horizontally-installed inertia disc which performs as an inertia amplification. With this unique design, beneficial nonlinear stiffness can be achieved, which reduce the dynamic stiffness at equilibrium position and improve the vibration isolation performance at low frequency range. Moreover, the inertia amplification driven by the compliant mechanism achieves an apparent high dynamic mass and, accordingly, a low resonance frequency. The nonlinear compliant mechanism with inertia amplification is validated by experimental prototypes for their special nonlinear features. The proposed NAVCM-IA is a unique passive and adjustable low frequency anti-vibration solution in extensive engineering applications.

Source: Proceedings of the Institution of Mechanical Engineers Part C Journal of Mechanical Engineering Science

DOI: 10.1177/09544062241281257

Authors: Xiao Feng, Tianhu Liu, Ertai An, Jian Feng, Long Qi

Institution: South China Agricultural University

Language: English

Topic: Vibration Control and Rheological Fluids

Subfield: Civil and Structural Engineering

Field: Engineering

Domain: Physical Sciences

Open Access status: green

Funder: National Natural Science Foundation of China

Award: G3794078821