| Full text | |
| Author(s): |
Carneiro Jr, Jean P.
;
Brennan, Michael J.
;
Gonsalves, Paulo J. P.
;
Sorokin, Vladislav S.
;
Cleante, Vinicius G.
;
Mace, Brian R.
Total Authors: 6
|
| Document type: | Journal article |
| Source: | Journal of Sound and Vibration; v. 602, p. 14-pg., 2025-01-22. |
| Abstract | |
This paper is concerned with the control of vibration transmission along a thin beam using a vibration neutraliser. The analysis focuses on the case where the position of the neutraliser is constrained such that it cannot be at the source or the receiver, and the frequency is sufficiently high so that the evanescent waves are localised near the discontinuities, such as the neutraliser, the excitation point and each end of the beam. The neutraliser, which may be of the translational or rotational type, creates a dip in the displacement transmissibility, which corresponds to an anti-resonance in the transfer receptance between the force source at one end of the beam and the displacement at the other end. It is shown that the frequency at which the dip occurs is not equal to the natural frequency of the neutraliser, which is often the case in many practical situations. It is shown that the frequency at which the dip occurs is dependent only on the local interaction between the neutraliser and the beam, so that the boundary effects of the beam may be neglected. This is demonstrated both analytically and experimentally. (AU) | |
| FAPESP's process: | 22/09543-6 - Strategies to form a super attenuation band in a finite metastructure beam using an array of resonators |
| Grantee: | Jean Paulo Carneiro Junior |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate (Direct) |
| FAPESP's process: | 19/19335-9 - Modeling, design and experimental analysis of nonlinear periodic structures |
| Grantee: | Jean Paulo Carneiro Junior |
| Support Opportunities: | Scholarships in Brazil - Doctorate (Direct) |
| FAPESP's process: | 24/02409-8 - On the use of local resonators to form a super attenuation band in a beam meta-structure |
| Grantee: | Vinícius Germanos Cleante |
| Support Opportunities: | Scholarships abroad - Research Internship - Post-doctor |
| FAPESP's process: | 18/15894-0 - Periodic structure design and optimization for enhanced vibroacoustic performance: ENVIBRO |
| Grantee: | Carlos de Marqui Junior |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 22/11995-2 - Designing Metamaterials Using Geometrical Nonlinearity to Form a Super Attenuation Band at Low Frequencies |
| Grantee: | Vinícius Germanos Cleante |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |