H∞ Control-Based Optimization Design for Active and Passive Dynamic Vibration Absorber

Li, Bin; Ouyang, Huajiang; Zhang, Jia Fan; Jiang, Yajun; Hu, Zhigang

doi:10.1007/s42417-023-00875-y

Cited by 1 publication

(1 citation statement)

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“…This has the effect of being able to isolate the transmission of the applied loads without reducing the stability of the whole system and avoiding excessive fluctuation. [ 27 ] A bioinspired toe‐like structure has also been developed by Yan et al, who were able to develop an isolator which was able to effectively isolate excitation loads at very low frequencies below 3 Hz. [ 28 ] Robertson et al [ 16 ] described a magnetic spring and the design parameters to achieve a QZS spring for vibration isolation in a vehicle's suspension.…”

Section: Introductionmentioning

confidence: 99%

Additive Manufacturing of Composite Foam Metamaterial Springs for Vibration Isolation

Zolfagharian,

Picken,

Bodaghi

et al. 2023

Adv Eng Mater

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This research introduces a novel approach for reducing the vibrations experienced by passengers in vehicles using metamaterials embedded in polyurethane foam to improve the existing vibration isolation capacity of car seats. An exploration of quasi‐zero and negative stiffness metamaterials has been conducted to develop metamaterial springs that exhibit a region of high‐static and low‐dynamic stiffness to achieve vibration isolation. Metamaterials were developed using low‐cost open‐source additive manufacturing methods and thermoplastic polyurethane filament. This investigation followed a process of determining the geometric, material, and systemic design requirements, to identify the quasi‐zero and negative stiffness force‐displacement regions. Small‐scale models of a car seat were developed by embedding the designed metamaterials into different grades of polyurethane foam and completing static and dynamic testing. The results demonstrated practical applications for implementing metamaterial springs into polyurethane foam to enhance vibration isolation under dynamic loading. The developed material library, and the key geometric variables in the metamaterial design allow for application specific solutions where the selection of the appropriate metamaterial and foam combination can be tailored to suit the system requirements.This article is protected by copyright. All rights reserved.

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Section: Introductionmentioning

confidence: 99%