Bistable mechanisms 3D printing for mechanically programmable vibration control

Zolfagharian, A, Demoly, F, Lakhi, M, Rolfe, B and Bodaghi, M ORCID: https://orcid.org/0000-0002-0707-944X, 2025. Bistable mechanisms 3D printing for mechanically programmable vibration control. Advanced Engineering Materials: 2402233. ISSN 1438-1656

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Abstract

Bistable mechanisms, characterized by their ability to maintain two distinct stable states under external stimuli, offer a versatile solution to engineering challenges, particularly in vibration suppression systems. While tuned mass dampers (TMDs) effectively mitigate vibrations at specific frequencies, their efficacy falls short across a broader spectrum. This work proposes enhanced adaptability for passive vibration reduction without dependence on complex control systems or external power sources by integrating bistable mechanisms into TMD systems. A bistable mechanism is designed based on numerical simulations and is 3D-printed via fused filament fabrication. The bistable mechanism provides more adaptive characteristics by displacing the tuned mass on a flexible link. Following experimental testing, the optimized design for bistable mechanisms has been determined. Then, a chain of bistable mechanisms is introduced to achieve the desired displacement for carrying the TMD payload. The stroke length for the TMD vibration test has been customized to reduce system vibrations by carefully optimizing geometric configurations of bistable mechanisms.

Item Type:	Journal article
Publication Title:	Advanced Engineering Materials
Creators:	Zolfagharian, A., Demoly, F., Lakhi, M., Rolfe, B. and Bodaghi, M.
Publisher:	Wiley
Date:	13 January 2025
ISSN:	1438-1656
Identifiers:	Number Type 10.1002/adem.202402233 DOI 2345887 Other
Divisions:	Schools > School of Science and Technology
Record created by:	Melissa Cornwell
Date Added:	24 Feb 2025 10:40
Last Modified:	24 Feb 2025 10:40
URI:	https://irep.ntu.ac.uk/id/eprint/53118

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