Fraunhofer-gesellschaft Zur Foerderung Der Angewandten Forschung E.v.

William Kaal

Jan Christoph Hansmann

Tobias Melz

Sven Herold

Björn Seipel

Roman Kraus

Andreas Friedmann

Sebastian Riess

Stefan Wolter

Jonathan Millitzer

Christoph Tamm

Bjoern Seipel

A device for reducing vibrations in a hydraulic system may have a separating device which has a side for delimiting a fluid-conducting cavity of the fluid system. The device may also have a vibration-reducing unit, which is designed to mechanically adjust the rigidity of the separating device such that vibrations in the fluid system are reduced.

Device for influencing, in particular reducing, vibrations in a fluid system, and method for influencing, in particular reducing, vibrations in a fluid system

A device and a method for influencing a dynamic property of at least one movably mounted body of two bodies coupled mechanically at least via a variably adjustable stiffness along a first force path. The invention includes a damping element with constant damping properties directly or indirectly coupled in series with the variably adjustable stiffness along the first force path Both bodies are mechanically directly or indirectly coupled via a second force path running parallel to the first force path along which at least one adjustable stiffness is incorporated. The damping property of the damping element and the adjustable stiffnesses are coordinated and configured so that a damping property assigned to the device for mechanical coupling can be varied exclusively by the adjustable stiffnesses.

Device and method for influencing a dynamic property of at least one movably mounted body and use thereof as a variably adjustable damping element

An electroactive elastomer converter is described comprising at least one electroactive elastomer layer () with a top side and underside and an electrically conductive electrode body (') that is two-dimensionally connected to the top side at least in regions. An electrically conductive electrode body (&#x2032;) is dimensionally connected in at least two regions to the underside. At least one electrode body (&#x2032;) in each case has an electrode surface facing the elastomer layer (). At least one opening () is present to which an a two-dimensional region in which there is no two-dimensional bond between the elastomer layer () and the electrode body (&#x2032;). A compressible medium is provided in the area of the opening.

Electroactive elastomer converter

A device for transmitting or decoupling mechanical vibrations between a first component and a second component with at least one of the first and the second components being free to vibrate in the at least one direction including: a planar coupling element, coupling the first and second components together, having a planar top surface and a planar bottom surface, and having a variably adjustable stiffness extending in the at least one direction; the planar coupling element, having planar dimensions with the planar coupling element being dimensionally stable along the planar dimensions and being elastic in a direction perpendicular to the planar surfaces; the first and second components are rotatable relative to each other about an axis extending in the direction perpendicular to the planar surfaces and in which at least one of the components is free to vibrate for adjusting the stiffness.

Device for transmitting or decoupling mechanical vibrations

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Darmstadt, Germany

William Kaal