Experimental analysis of nonlinear periodic structures

• Grant number: 20/00659-6
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• Start date: April 01, 2020
• End date: March 31, 2022
• Field of knowledge: Engineering - Mechanical Engineering - Mechanics of Solids
• Principal Investigator: Michael John Brennan
• Grantee: Vinícius Germanos Cleante
• Host Institution: Faculdade de Engenharia (FEIS). Universidade Estadual Paulista (UNESP). Campus de Ilha Solteira. Ilha Solteira , SP, Brazil
• Associated research grant: 18/15894-0 - Periodic structure design and optimization for enhanced vibroacoustic performance: ENVIBRO, AP.TEM

Abstract

This project will design the nonlinear periodic structure and performing experimental tests, aiming at achieving stop-bands at frequencies <100 Hz. The aims of the experiments are to validate the theoretical predictions made from the theoretical models, to investigate the practical issues in realising nonlinear periodic structures, and to determine their practical limitations in terms of the attenuation of vibration transmission. The researcher may also perform some theoretical work in conjunction with the doctoral student. This project is scheduled to be carried out in two years. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

CLEANTE, V. G.; BRENNAN, M. J.; GONCALVES, P. J. P.; CARNEIRO JR, J. P.. On the formation of a super stop-band in finite mono-coupled periodic structures using an array of vibration absorbers: Controlling parameters and physical insight. MECHANICAL SYSTEMS AND SIGNAL PROCESSING, v. 180, p. 14-pg., 2022-11-15. (18/15894-0, 19/19335-9, 20/00659-6)

CARNEIRO JR, J. P.; BRENNAN, M. J.; GONCALVES, P. J. P.; CLEANTE, V. G.; BUENO, D. D.; SANTOS, R. B.. On the attenuation of vibration using a finite periodic array of rods comprised of either symmetric or asymmetric cells. Journal of Sound and Vibration, v. 511, OCT 27 2021. (19/19335-9, 20/00659-6, 18/15894-0)

GONCALVES, P. J. P.; BRENNAN, M. J.; CLEANTE, V. G.. Predicting the stop-band behaviour of finite mono-coupled periodic structures from the transmissibility of a single element. MECHANICAL SYSTEMS AND SIGNAL PROCESSING, v. 154, JUN 1 2021. (18/15894-0, 20/00659-6)