Multi-performance hysteretic rheological device
First Claim
1. A hysteretic device for passive control of the mechanical vibration due to translational motion, comprising:
- at least one frame to which at least a rigid element is connected by a plurality of wire ropes, which are substantially straight in the unloaded condition, wherein;
the wire ropes are mutually parallel along a direction, that is termed horizontal direction, in the condition of absence of mechanical vibrations;
there are two facing rigid elements connected by wire ropes to opposite walls of said at least one frame;
said two facing rigid elements are movable along a vertical translational direction that is perpendicular to said horizontal direction;
the hysteretic device further comprising;
a third rigid element, which is positioned between said two facing rigid elements and connected to these by a movable connection system which allows only the reciprocal motion of the two facing rigid elements along the horizontal direction;
said third rigid element is mounted in a sliding manner along at least a guide which extends along said vertical direction and has two ends, which are secured to said at least one frame.
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Accused Products
Abstract
A multi-performance hysteretic rheological device. The invention concerns a mechanical device capable of providing restoring forces with non-linear hysteresis loops whose shapes can be adjusted depending on the specifications required by the application. The forces exerted on rigid sliding blocks on smooth bars are for example produced by the wire ropes composed of steel and shape-memory material wires. The device according to the invention can be used in very different applications including: vibration damper, hysteretic insulator, energy absorber, shock absorber, applications in which a specific rheological body with force-displacement characteristics of hysteretic type is required.
7 Citations
21 Claims
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1. A hysteretic device for passive control of the mechanical vibration due to translational motion, comprising:
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at least one frame to which at least a rigid element is connected by a plurality of wire ropes, which are substantially straight in the unloaded condition, wherein; the wire ropes are mutually parallel along a direction, that is termed horizontal direction, in the condition of absence of mechanical vibrations; there are two facing rigid elements connected by wire ropes to opposite walls of said at least one frame; said two facing rigid elements are movable along a vertical translational direction that is perpendicular to said horizontal direction; the hysteretic device further comprising; a third rigid element, which is positioned between said two facing rigid elements and connected to these by a movable connection system which allows only the reciprocal motion of the two facing rigid elements along the horizontal direction; said third rigid element is mounted in a sliding manner along at least a guide which extends along said vertical direction and has two ends, which are secured to said at least one frame. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A hysteretic device for passive control of the mechanical vibration due to translational motion, comprising:
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at least one frame to which at least a rigid element is connected by a plurality of wire ropes, which are substantially straight in the unload condition, wherein; the wire ropes are mutually parallel along a direction, termed horizontal direction, in the condition of absence of mechanical vibrations; there are two facing rigid elements connected by wire ropes to opposite walls of said at least one frame; said two facing rigid elements are movable along a vertical translational direction that is perpendicular to said horizontal direction; the hysteretic device further comprising; said two facing rigid elements are connected to said wire ropes by a sliding system configured to allow the relative motion between rigid element and respective wire rope along said horizontal direction; said two facing rigid elements are mounted in a sliding manner on at least one guide which extends along said vertical direction and has two ends, which are secured to said at least one frame. - View Dependent Claims (13)
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14. A hysteretic device for the passive control of mechanical vibrations due to translational motion, comprising:
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at least one frame to which a rigid element is connected by a plurality of wire ropes, which are substantially straight in an unload condition, wherein; the wire ropes are mutually parallel along a direction, termed horizontal direction, in the condition of absence of mechanical vibrations; said rigid element is movable along a vertical translational direction that is perpendicular to said horizontal direction; the hysteretic device further comprising; said rigid element is connected to said wire ropes by a sliding system configured to allow the relative motion between rigid element and respective wire rope along said horizontal direction; said rigid element is mounted in a sliding manner on at least one guide which extends along said vertical direction and has two ends, which are secured to said at least one frame.
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15. A tuned-mass hysteretic device for passive control of the mechanical vibrations due to translational motion, comprising:
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at least one frame to which at least one tuned mass is connected by connection means, wherein; said connection means comprise a plurality of wire ropes, which are substantially straight in the unloaded condition; said at least one tuned mass is movable along at least one translation direction; the wire ropes are connected at one end directly to said frame and the other end directly to said at least one tuned mass, so that they are substantially perpendicular to said at least one translation direction under conditions of no load; wherein; said at least one tuned mass is a spherical mass resting on said frame; said spherical mass is connected, by a plurality of wire ropes aligned in the direction of the force of gravity, arranged with radial symmetry with respect to the spherical mass, to the frame; the connection between each wire rope and said at least one mass is constituted by a sliding system configured to allow the relative motion between said at least one tuned mass and the wire rope along said direction of the force of gravity. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification