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Simultaneous supply of infinite and infinitesimal stiffness of active isolation systems that are exposed to multiple vibration sources

Kletz, Björn Timo and Melcher, Jörg (2013) Simultaneous supply of infinite and infinitesimal stiffness of active isolation systems that are exposed to multiple vibration sources. Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring 2013, San Diego, USA.

Full text not available from this repository.

Abstract

Commonly, vibration isolation systems reduce the transmissibility from seismic base vibrations to sensitive structures. To obtain a desirable low isolation frequency, vibration isolation systems are typically equipped with low stiffness interfaces between the involved structures. Strongly detrimental influences to the possible vibration reduction performance are caused by the effects of additional force disturbances that act directly on the isolated object. To protect sensitive structures from vibrations, isolation systems need to generate high flexibility against the vibrating ground. In the same time those systems need to generate high stiffness against the direct (force) disturbances as well. The technique described in this paper enables vibration reduction at such a sensitive object while seismic base and direct force disturbances are concurrently present. It is theoretically introduced and experimentally examined how the emerging conflict of simultaneous vibration isolation and energy reflection can be solved at a single isolation interface. This paper shows that even soft, adaptively altered isolation interfaces can reach these contrary goals. These interfaces are equipped with piezoelectric foil actuators to enable active control. The used active control mechanism and the very promising experimental results are highlighted in this paper.

Item URL in elib:https://elib.dlr.de/86649/
Document Type:Conference or Workshop Item (Speech)
Title:Simultaneous supply of infinite and infinitesimal stiffness of active isolation systems that are exposed to multiple vibration sources
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Kletz, Björn TimoUNSPECIFIEDUNSPECIFIED
Melcher, JörgUNSPECIFIEDUNSPECIFIED
Date:March 2013
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:vibration isolation, seismic base, seismic ground, direct force, control, stability, infinite stiffness, infinitesimal stiffness, piezoelectric actuator, rear view mirror
Event Title:Smart Structures and Materials & Nondestructive Evaluation and Health Monitoring 2013
Event Location:San Diego, USA
Event Type:international Conference
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:other
DLR - Research area:Transport
DLR - Program:V - no assignment
DLR - Research theme (Project):V - no assignment
Location: Braunschweig
Institutes and Institutions:Institute of Composite Structures and Adaptive Systems > Adaptronics
Institute of Composite Structures and Adaptive Systems
Deposited By: Böhringer-Thelen, Isolde
Deposited On:18 Dec 2013 12:12
Last Modified:08 May 2014 23:26

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