Abstract: The aim of this work is to investigate the energy transfer between acoustic fields, through a contact interface by exploiting the friction nonlinearities. In particular, the work is focused on the development of a device able to transfer the vibrational energy from a known primary vibrational field to a secondary field with a different frequency content. The device is composed by a main resonator capturing the energy from the primary vibrational field and a secondary resonator, excited by the large band excitation at the frictional interface and radiating the secondary vibrational field. The main resonator has been designed as a compliant system able to provide a translational oscillation of the contact surface, allowing for maintaining constant the normal load at the interface. The numerical design of the device has been developed together with its experimental dynamic characterization. Experimental tests, developed on a dedicated set-up, showed the reliability of the device to perform the energy transfer between the vibrational fields.
The aim of this work is to investigate the energy transfer between acoustic fields, through a contact interface by exploiting the friction nonlinearities. In particular, the work is focused on the development of a device able to transfer the vibrational energy from a known primary vibrational field to a secondary field with a different frequency content. The device is composed by a main resonator capturing the energy from the primary vibrational field and a secondary resonator, excited by the large band excitation at the frictional interface and radiating the secondary vibrational field. The main resonator has been designed as a compliant system able to provide a translational oscillation of the contact surface, allowing for maintaining constant the normal load at the interface.The numerical design of the device has been developed together with its experimental dynamic characterization. Experimental tests, developed on a dedicated set-up, showed the reliability of the device to perform the energy transfer between the vibrational fields.
Design of a mechanical system for energy transfer between acoustic fields by frictional contact nonlinearity / Lacerra, Giovanna; Massi, Francesco; Chatelet, E.; Gryllias, K.. - ELETTRONICO. - (2015), pp. 1-10. (Intervento presentato al convegno DINAME, International Symposium on Dynamic Problems of Mechanics tenutosi a NATAL, BRASIL nel 22-27 febbraio 2015).
Design of a mechanical system for energy transfer between acoustic fields by frictional contact nonlinearity
LACERRA, GIOVANNA;MASSI, Francesco;
2015
Abstract
Abstract: The aim of this work is to investigate the energy transfer between acoustic fields, through a contact interface by exploiting the friction nonlinearities. In particular, the work is focused on the development of a device able to transfer the vibrational energy from a known primary vibrational field to a secondary field with a different frequency content. The device is composed by a main resonator capturing the energy from the primary vibrational field and a secondary resonator, excited by the large band excitation at the frictional interface and radiating the secondary vibrational field. The main resonator has been designed as a compliant system able to provide a translational oscillation of the contact surface, allowing for maintaining constant the normal load at the interface. The numerical design of the device has been developed together with its experimental dynamic characterization. Experimental tests, developed on a dedicated set-up, showed the reliability of the device to perform the energy transfer between the vibrational fields.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
