Vibration response and isolation of X-shaped two-stage vibration isolators: Analysis of multiple parameters

Inspired by the vibration mitigation effect of kangaroo's legs, a novel bio-inspired kangaroo leg structure (BKLS) is proposed for low-frequency vibration isolation. The BKLS is composed of two main rods with different lengths (simulating the calf bone and thigh bone), two linear springs (simulating the internal and external muscles) and two auxiliary rods. The dynamic model is established based on the Lagrange principle to describe the nonlinear effects of BKLS, which are mainly contributed by the internal and external springs and the rotary joints. Experiments were carried out to verify the theoretical predictions and demonstrate that the proposed BKLS indeed possess superior low-frequency isolation performance without sacrificing the carrying capacity, which can effectively suppress vibration with frequencies higher than 1.06 Hz. Regardless of the isolation mass and the excitation conditions, the vibration isolation performance can be significantly improved by selecting appropriate structural parameters. The innovative and simple BKLS provides an effective method for low-frequency vibration isolation.

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Parameter optimization of a two-stage quasi-zero-stiffness system with linear dynamic vibration absorber

Xing,

Yang

2024

Nonlinear Dyn

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Vibration response and isolation of X-shaped two-stage vibration isolators: Analysis of multiple parameters

Cited by 10 publications

References 72 publications

Dynamic stability and vibration isolation property of a foot-leg coupling bio-inspired vibration isolation structure

Dynamic stability and vibration isolation property of a foot-leg coupling bio-inspired vibration isolation structure

A novel bio-inspired kangaroo leg structure for low-frequency vibration isolation

Parameter optimization of a two-stage quasi-zero-stiffness system with linear dynamic vibration absorber

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