Abstract: A device for damping a rolling bearing includes a support and a radially flexible cage. The cage includes a ring provided in order to be mounted on the periphery of a rolling bearing. The radial flexibility of this cage results from the structure thereof which is perforated by oblique posts connecting the ring to an attachment annulus of this cage. The support includes a plurality of teeth each extending radially through a respective inter-post opening of the cage. The ring and the support form, radially between one another, a fluid damping cavity suitable for forming a compressed fluid film. The device allows a controlled radial movement of the ring, the latter being radially limited by the support, while having a limited footprint.

Abstract: A support assembly for a bearing of a gas turbine engine includes a shaft extending along an axial direction. The support assembly includes an outer race positioned radially exterior to the bearing such that the outer race supports the bearing. Additionally, the support assembly includes a shape memory alloy damper positioned radially exterior to the outer race and at least partially supporting the outer race. Moreover, the shape memory alloy damper includes a plurality of sleeves. One or more sleeves of the plurality of sleeves include a shape memory alloy material.

Abstract: This motor device is provided with, e.g.: a motor having a motor case and a shaft supported by the motor case so as to be capable of rotating about a rotation center; a housing in which the motor is housed; and an elastic member interposed between the motor case and the housing. A first concave part in communication with both sides of the elastic member in the axial direction is provided between the outer peripheral surface of the elastic member and a cylindrical surface of the housing.

Abstract: A compressor for a gas turbine having means for determining whether a blade of the compressor has been deformed includes a rotor having an outer circumference on which a blade is formed; a monitoring part for monitoring a driving state of the blade in order to acquire monitoring information on the driving state of the blade; and a control part for determining whether the blade has been deformed based on the monitoring information. The monitoring part detects time points at which the trailing edge and the leading edge of the blade pass and acquire the detection time information of the detected time point. The control part receives the detection times of the trailing edge and the leading edge from the monitoring part and determines whether the blade has been deformed based on the detection time of the trailing edge and the detection time of the leading edge.

Abstract: A sleeve for a bearing damper comprising a cylinder shaped body having a forward end opposite an aft end, the body including an interior surface opposite an exterior surface, the body configured insertable between a bearing proximate the interior surface and a housing proximate the exterior surface; a ring portion proximate the forward end, the ring portion having an outer diameter larger than a diameter of the body; and an extension portion configured to provide an active damper surface extending beyond the housing.

Abstract: A turbine engine including a first static structure comprising a first material defining a first thermal expansion coefficient and a second static structure comprising a second material defining a second thermal expansion coefficient different from the first thermal expansion coefficient. The first static structure and the second static structure are together disposed in adjacent arrangement along a load direction. The first static structure and the second static structure together selectively define a gap therebetween along the load direction based at least on a load difference between the first static structure and the second static structure.

Abstract: A load reduction assembly includes an annular bearing cone configured to extend between a bearing assembly and a frame assembly and form a first load path therebetween. The load reduction assembly further includes an annular recoupler member configured to extend between the bearing assembly and the frame assembly and form a second load path therebetween. The second load path is parallel to the first load path. The recoupler member includes a shape memory alloy configured to change stiffness in response to a change in a stress condition, thereby regulating an imbalance condition of a rotor shaft coupled to the bearing assembly.

Abstract: A telescopic steering column assembly includes at least one support bearing assembly that comprises an inner bearing race which is located on the steering shaft, an outer bearing race that is located on an inner face of a shroud, and a set of ball bearings that are located between the inner bearing race and the outer bearing race and are free to roll along bearing surfaces defined by the bearing races. Each of the bearing races comprises a pair of annular bearing race parts, defining a circumferentially extending bearing surface arranged coaxially and spaced apart from each other axially such that varying the spacing between the two parts varies the effective radius of the bearing race.

Abstract: A centering spring assembly of a turbomachine according to an exemplary aspect of the present disclosure includes, among other things, a damper beam, a bearing support, and a spanner nut. At least a portion of the damper beam axially overlaps at least a portion of the spanner nut relative to a rotational axis of the turbomachine.

Abstract: The invention relates to a functional hydro-elastic element to be lodged in a hydro-elastic joint for damping load vibrations between two structural parts, in particular a wheel suspension and a vehicle body, the functional hydro-elastic element having a longitudinal axis and a circumferential direction around this longitudinal axis. The functional hydro-elastic element has at least one row of hydraulic chambers, extending circumferentially and comprising at least three hydraulic chambers and at least one throttling duct that enables a communication of liquid between each pair of respective circumferentially adjacent hydraulic chambers so that a variation of at least one working volume of the hydraulic chambers due to load vibrations can be balanced by enabling a flow of liquid into at least one of the other hydraulic chambers.

Abstract: A center bearing support (1) is provided which prevents a vibration absorbing function from being lowered on the basis of an increase of a dynamic spring constant by a resonance of an elastic body (13), at the time of an input of a vibration of a propeller shaft and a vibration. An inner periphery of an outer ring (11) fixed to a vehicle body side is provided with an inner ring (12) retaining a center bearing (2) via the elastic body (13) formed as a bent shape which is convex to one side in an axial direction and made of a rubber-like elastic material, the elastic body (13) has flexible portions (132, 133) in an inner diameter side and an outer diameter side than the bent portion (131) as a spring, and a resonance frequency thereof is equal to or more than 1500 Hz.

Abstract: The rolling bearing, in particular for a power steering mechanism, comprises an inner ring, an outer ring, an elastic sleeve in contact axially and radially with one of said rings, and a housing holding the sleeve. The housing provides an axial portion and two lateral flanges extending the axial portion and mounted in contact against the sleeve to exert an axial pre-stress on said sleeve.

Abstract: A machine has an outer housing that receives a drive shaft. A bearing housing supports a bearing. The drive shaft is mounted within the bearing and the outer housing. Attachment members extend between the outer housing and the bearing housing. A selected damping includes an elastomeric ring attached to a surface of a bearing housing and an outer housing. A selectively moveable plate is connected to the outer housing and the bearing housing. The plate is selectively moveable from a position at which it engages the elastomeric ring to a point at which it is spaced from the elastomeric ring.

Abstract: The invention relates to a safety bearing for retaining a rotor shaft (4) of a machine (1), wherein the safety bearing (2) comprises a first carrier body (7) rotating about a virtual geometric center line (M) and roller bodies (5), wherein each roller body comprises a region (19) that is located between the center line (M) and the first carrier body (7), wherein the roller bodies (5) are each connected in a rotatable manner to the first carrier body (7) via a shaft (6). The invention creates a safety bearing (2) with which the likelihood of an occurrence of a backward-whirl is considerably reduced as compared to the safety bearings known from the prior art.

Abstract: A bearing assembly includes a first bearing comprising a first inner ring and a second bearing comprising a second inner ring. A sleeve-shaped spacer is disposed between and axially separates the first and second inner rings. An adhesive connects the spacer to the first and second inner rings.

Abstract: A roller bearing assembly includes a plurality of rollers (122), a cage (114) including a plurality of slots (118) for positioning the plurality of rollers, an outer race (134) positioned radially outside the plurality of rollers and the cage, and means (126,130,138) for retaining axial alignment between the cage and the outer race provided integrally with at least one of the cage and the outer race.

Abstract: A rack-assist type electric power steering apparatus, in which when a ball nut slides a rack bar while rotating, a vibration and a noise in the axis direction and the radial direction, generated from the rack bar and a rack housing, are absorbed. This facilitates the operation of the ball nut and the rack bar, and reduces the vibration and the noise, thereby resulting in an effect for providing a comfortable steering feeling to a driver.

Abstract: The present disclosure describes a magnetic fluid sealing device having a shaft centered with respect to a magnetic structure and rolling element bearing, as well as a method for centering the shaft in the device. A compressible ring located in a groove on the shaft is used to partially fill the gap between the shaft and the rolling element bearing and to make contact with the rolling element bearing. The compressible ring aligns and centers the shaft with the rolling element bearing. A liquid locking material is added to the gap and hardened to couple the shaft and compressible ring to the rolling element bearing. An alternative self-alignment mechanism is also disclosed.

Abstract: A bearing support ring includes a plurality of contact pads radially protruding from inner and outer circumferential surfaces of the ring. Flexible portions of the ring are defined between the contact pads and have a radial thickness less than that of the ring at the contact pads, such as to permit elastic deflection of the ring in a radial direction between the contact pads. Openings sized to permit unrestricted oil flow are provided, such as within the flexible portions of the ring.

Abstract: The invention relates to a safety bearing for retaining a rotor shaft (4) of a machine (1), wherein the safety bearing (2) comprises a first carrier body (7) rotating about a virtual geometric center line (M) and roller bodies (5), wherein each roller body comprises a region (19) that is located between the center line (M) and the first carrier body (7), wherein the roller bodies (5) are each connected in a rotatable manner to the first carrier body (7) via a shaft (6). The invention creates a safety bearing (2) with which the likelihood of an occurrence of a backward-whirl is considerably reduced as compared to the safety bearings known from the prior art.

Abstract: A bearing assembly (1) includes at least one bearing (3) that rotatably supports a cylindrical roller tube (2). A cushioning layer (5) is disposed, directly or indirectly, between a ring (4) of the bearing (3) and the cylindrical roller tube (2). At least one contact surface (6, 7) for the cushioning layer (5) extends over a defined axial distance (L) at an angle (?) to the rotational axis (A) of the bearing assembly (1).

Abstract: A roller bearing assembly for supporting a shaft axially and radially in a rack includes a roller bearing with a carrier, a portion of which is supported at the rack with an element with elastomeric properties being interposed between a support for the rack and the portion of the carrier. In order to indicate a roller bearing, which supports the shaft axially and radially, and makes an inclined position of the shaft possible without causing straining of the system of shaft, roller bearing and rack, the element with elastomeric properties, viewed in the tangential (circumferential) direction of the roller bearing, has at least a first region, the stiffness of which is different from that of the remaining tangential (circumferential) region.

Abstract: In a shaft bearing comprising outer and inner parts with an elastic element carrier disposed therebetween, the elastic element carrier includes first and second elastic elements disposed on opposite radial sides thereof and is movable with respect to one of the outer and inner parts in axial direction and with respect to the other of the outer and inner parts in radial direction, and the elastic elements disposed between the element carrier and the outer, and respectively, the inner parts have selectable elasticities so as to provide for distinct selectible radial and axial resiliencies of the shaft bearing.

Abstract: A composite resilient mount for rolling element bearings, comprising a composite hoop portion, and including a plurality of circumferentially dispersed inner pads and outer pads defining a plurality of arcuate beam portions disposed circumferentially between adjacent pads. The hoop portion and the inner and outer pads, may comprise a circumferentially wound fiber, such as a carbon fiber, and a resin. The inner and outer pads may be rounded, feathered or otherwise configured to eliminate edges from the inner and outer pads, thereby preventing damage to adjacent components. A method for providing damping to a rolling element bearing is also disclosed.

Abstract: A decoupling device for the bearing arrangement of a shaft carried in a housing, in particular a shaft of a belt-driven conical-pulley transmission with a chain that functions as the belt. The decoupling device includes an outer bearing ring configured with a circularly cylindrical outer surface and within which the shaft is mounted, and an inner surface of a housing that encloses the bearing ring outer surface. At least one radial ondular washer is arranged between the bearing ring outer surface and the housing inner surface, which allows a limited relative radial movement between the housing inner surface and the bearing ring outer surface by elastic deformation of the washer.

Abstract: A squeeze film damper for a bearing and a vibration damping mechanism capable of damping the vibration of a rolling bearing are provided. The squeeze film damper is small in construction and can be easily made by mass production. The vibration damping mechanism is capable of damping both radial and axial vibrations. A bearing housing 15 is provided with a bearing holding bore 16 of a diameter greater than the outside diameter of the outer ring 14 of a bearing, and an oil hole 19 through which oil is supplied into the bearing holding bore 16. A vibration damping mechanism 1 is formed by inserting a thin, flat sheet 17 provided with slits into an annular space formed between the inner wall of the bearing holding bore 16 and the outside surface of a bearing held in the bearing holding bore 16 so as to surround the bearing. Parts of the thin, flat sheet extending between the adjacent slits serve as elastic beams. The elastic beams center the bearing and support the centered bearing elastically.

Abstract: A bearing arrangement for a medical device in which a rotating component is supported relative to a stationary housing includes a bearing with an inner ring and an outer ring. The inner ring is connected to the component which is to be supported and the outer ring is connected to the housing by way of at least one damping element. To increase quiet running of the rotating component, both the inner ring and also the outer ring are made as integral elements and have an essentially hollow cylindrical base contour, with an extension of the outer ring in the radial direction being at least twice the extension of the inner ring in the radial direction.

Abstract: A dampening bearing support member having a plurality of bearings disposed between an object and a base with rheological medium disposed around the bearings, with the rheological medium being under the control of the user at times when it is desired to stiffen the rheological medium and limit or prevent movement of the bearings and the object in relation to the base.

Abstract: The concept of the invention is based on a machine housing with a bearing housing, the bearing seat of which is connected to a housing wall of the machine housing by a bearing housing wall provided with ribs (42, 43) and is subjected to radially directed forces (11, 44). The proposal is made that the bearing housing wall possess at least one ring shaped annular rib (42) which at least partially encompasses the bearing seat in an area (21), the angle (?) of inclination of which, relative to its original unloaded condition, would change itself to the greatest extent under load (11). Further proposed is that a plurality of additional ribs (43) run transverse to the annular rib (42). Thereby, with a relatively small consumption of material, a good shape-retention is achieved. In addition, a tilting of the bearing seat and the bearing is held to a lesser extent than is the case of conventional bearing housing structures.

Abstract: An elastic rubber bearing is provided with an intermediate tube, namely, a bush bearing with a reinforcing insert arranged in the elastomeric bearing body. The design of the bearing includes a pretension, which is distributed as uniformly as possible both in relation to the circumference and in the axial direction. The pretension is generated in the elastomer in a bearing body after the vulcanization by calibrating the outer sleeve. A reinforcing element of the bearing includes an intermediate tube slotted on two sides in relation to its axial extension.

Abstract: In one aspect of the present invention discloses a dual-stiffness damping system for an evacuated energy storage system, the damping system comprising one or more flexible dampers and a plurality of more rigid bumpers, and a method of damping an evacuated energy storage system using dual-stiffness damping. Indeed, under normal operating conditions, a flexible damper, having a stiffness of about 500 lb/in to about 4000 lb/in, minimizes the rigid body critical speed of the rotor assembly of the energy storage system, allowing relative displacement between the stator assembly and rotor assembly but preventing the assemblies from physically contacting each other. Under more extreme external loading conditions, e.g., during an earthquake, the plurality of more rigid bumpers, having a stiffness of about 50,000 to 250,000 lb/in, engages the outer race of the bearing assembly to arrest further relative displacement substantially.

Abstract: The bearing device 4 is press-fitted between the inside surface of the axis insertion hole of a steering column and the outside surface of a steering axis inserted into the axis insertion hole so as to support the steering axis. The bearing device 4 comprises a roller bearing arranged on the outside surface of the steering axis and a spacer ring arranged between the outside surface of the roller bearing and the inside surface of the axis insertion hole. The spacer ring comprises a wall thickness holding unit for holding the thickness of its wall in the radius direction and a thickness reduction unit which is provided on at least one site of the inside and outside surfaces and its end in the vicinity of the wall thickness holding unit and which reduces the thickness of the wall to facilitate deformation of the spacer ring.

Abstract: A plurality of rolling elements is in rolling contact with a metal outer race and is retained within a bearing cage. An annular bushing partially encloses the outer race, the annular bushing being split along a radial plane into two bushing halves molded of an engineered thermoplastic elastomer. The bushing halves are retained axially together such that axial movement of the outer race is limited. The annular bushing may incorporate integral annular seals and may have a rounded radially outward surface to facilitate self-alignment of the bearing assembly.

Abstract: A dampening bearing support member having a plurality of bearings disposed between an object and a base with rheological fluid disposed around the bearings and structure to retain the rheological fluid in such position, with the rheological fluid being under the control of the user at times when it is desired to stiffen the rheological fluid and limit or prevent movement of the bearings and the object in relation to the base.

Abstract: Coach coupling assembly for coupling together two coaches of a railbound multi-unit set of coaches has a first coupling arm fixed to one of the coaches and a second coupling arm fixed to a second one of the coaches. The first coupling arm has a vertical through-bore that houses the outer race ring of a rolling bearing. The bore in the inner race ring of the bearing receives a depending shaft journal that is fixed to the second coupling arm. An arrangement is provided to damp radial forces acting upon the coupling and to compensate for misalignment between the axes of the through-bore and the shaft journal. In this regard, the through-bore is provided with an elastic lining of resilient material, and the bearing used is an angularly self-aligning rolling bearing that permits a certain degree of misalignment between the through-bore and the shaft journal. The bearing is fitted inside the lining, which is thereby adapted to take up and dampen radial forces acting upon the coupling.

Abstract: A roller bushing assembly (21d, 21e, 21f) designed to enable a low tolerance, frictional fit within an out-of-round or otherwise distorted support member (5, 9) includes a bushing member (29a, 216) having an outer surface (102) machined to provide various axially spaced, annular grooves (127-130, 132 and 242-250). Between or directly adjacent respective ones of the annular grooves (127-130, 132 and 242-250) are defined a plurality of axially spaced and radially extending ribs (113-122 and 232-240). The axial outermost ribs (113, 122 and 240) are preferably elongated relative to the remaining ribs (114-121 and 232-239) and have annularly chamfered portions (124, 125 and 252). The ribs (113-122 and 232-240) are adapted to shear upon mounting of the bushing member (29a, 216) within an out-of-round or otherwise distorted support. By providing the shearable ribs (113-122 and 232-240), the bushing assembly (21d, 21e, 21f) can be effectively mounted within a greater range of varying sized support members.

Abstract: A roller bearing for the radial support of two component parts, includes an inner race, an outer race and rolling elements disposal between the inner and outer races, as well as a damping layer between at least one race and one of the component parts. The outer race has an outer contour facing the component part. The component part has an inner contour that faces the outer race, and essentially corresponds to the shape of the outer contour. With respect to an outer race having a cylindrical outer contour, the outer race according to the present invention shows an increase in thickness, at least sectionally, preferably in the area of the rolling element. The outer contour is shaped such that a pendulum motion of the bearing or of the component part, with deformation of the damping layer, is limited.

Abstract: The inventive cylindrical cartridges are installed in machinery for purposes of isolating vibration of conventional rolling element bearings from major machinery components. Two inventive cartridges are concentrically coupled with a rolling element bearing, one cartridge fitting circumferentially inside the bearing's inner ring, the other cartridge fitting circumferentially outside the bearing's outer ring. Each inventive cartridge comprises inner and outer concentric cylindrical metallic pieces and an intermediate filling which includes two lateral circumferential elastomeric bands separated by a medial circumferential air gap. The inventive cartridges can be inexpensively fabricated and can be permanently integrated with existing machinery.

Abstract: In an elastic frictional member including: a core ring fitted on a sleeve fixedly mounted on a shaft; and an elastic element engaged with the outer cylindrical surface of the core ring, a plurality of small protrusions are extended from the outer surface of a lip forming a part of the elastic element; that is, from a slide surface of the elastic element which is in slide contact with the inner cylindrical surface of a shaft hole formed in the gear. The small protrusions of the lip are in point contact with the inner cylindrical surface of the shaft hole of the gear; that is, the outer surface of the lip from which the small protrusions are extended is spaced from the inner cylindrical surface of the shaft hole of the gear, thus allowing the formation of a lubricant film in the space. The lubricant film thus formed maintains the friction coefficient substantially constant.

Abstract: A bearing assembly for supporting a shaft without play, in particular for use with a steering shaft in a steering column, includes a plurality of needle-like rollers that are circumscribed by a thin-walled, split bush for elastically loading the rollers in radial direction. Fitted about the bush is an elastic ring that applies a preload on the bush and has at least one peripheral surface formed with neighboring ridges of relatively greater radial dimension and relatively smaller radial dimension in alternating relationship.

Abstract: An electric motor (1) has a stator (3) and a rotor (5) having a rotor shaft (7), which rotor shaft is supported relative to the stator by means of ball-bearings (9). The ball-bearings are connected directly to suspension elements (11 ) for the suspension of the electric motor (1) relative to an external device. Resilient elements (13) are arranged between the suspension elements (11) and the stator (3) to suppress vibrations in the suspension elements (11). When the electric motor (1) is used in an apparatus less vibrations are transmitted to the frame of the apparatus, so that the apparatus itself also produces less vibrations and less noise.

Abstract: An improved structure supports a bearing in a bore provided in a portion of a transmission case and prevents relative rotation therebetween. In a preferred embodiment, the clutch housing portion of a transmission case is made from aluminum and includes an interior wall having a bore formed therein. A circumferential groove is formed in the side wall of the bore, and a compressible or elastomeric O-ring is disposed in the groove. A bearing is made from steel and includes an inner race, an outer race, and a plurality of rollers disposed between the races. As the bearing is pressed into the bore, the O-ring is compressed completely within the groove. So long as both the aluminum clutch housing and the steel outer race of the bearing remain in a relatively cold condition, the outer race will frictionally engage the inner surface of the bore, thus preventing any relative rotational movement therebetween.

Abstract: Cantilever shafts (34, 40) support bearing assemblies (54, 56) over which is mounted a tuned compliance or constraint member (92) including flexure members (102, 104, 106) which minimize deflection of the shafts and improve operation of associated rotary tools (18, 20). An improved lock nut (70-86) permits precise installation of the bearing assemblies.

Abstract: A bearing assembly employs an improved seal wear ring comprising a rigid metal sleeve having an internal diameter greater than that of the shaft to provide a clearance therebetween along the full length of the wear ring. An annular spacer ring of a dense, dimensionally stable synthetic resin material such as polyvinylchloride is fitted within an annular recess on the inner surface of the metallic sleeve, with the spacer ring having an internal diameter slightly less than the external diameter of the shaft to provide an interference fit therebetween when the bearing assembly is pressed onto the shaft.

Abstract: A bearing mounting arrangement is provided in which a dimension stabilizing ring is molded into a motor housing bearing cap to limit critical bearing mounting variations in the, as molded, plastic bearing cap. The dimension stabilizing ring has an inner castellated cylindrical surface forming axially parallel grooves. These grooves are filled with plastic during molding which include portions that intrude into the bearing mounting bore so that a bearing may be force fit in this bore, deforming these plastic portions. This fixes the outer race of the bearing and prevents rotation of it relative to the bearing cap of the motor housing.

Abstract: A single-thrust bearing is disclosed. The bearing includes a rolling-contact bearing having an inner ring and an outer ring, as well as a thrust ring concentrically surrounding the outer ring of the rolling-contact bearing with radial clearance. The outer ring and the thrust ring are braced against one another by an intermediate ring of rubber-elastic material that is formed by at least two web members, which are distributed in the circumferential direction and are separated by a circumferential clearance. The design of the web members is such that they are inclined with an involute shape in the same direction of rotation.

Abstract: A resilient central bearing such as for a propeller shaft for motor vehicle drives, having a roller bearing held in a housing which is disclosed and claimed. A bracket for being secured to the motor vehicle body holds the bearing. The inner bearing race of the roller bearing is associated with a carrying ring having resilient member for receiving the shaft to be supported.

Abstract: A multidirectional propeller shaft bearing is disclosed which includes a body made of two die-stamped plates, the first being provided with a cylindrical box having an anchoring flange on one side and the opposite side has an attached, welded and equally shaped other flange made by the plate itself. In addition, within the cylindrical part, an equally cylindrical rubber part is housed, the inside diameter of which includes a core of harder material which is provided with a grease nipple. The core of harder material provides an inner housing for a conventional bearing so that any type of propeller shaft may be accurately passed therethrough, with multidirectional springiness being provided by the rubber part whose outside diameter forms a flange or collar shaped so as to fit closely against the anchoring flange and so that it may be affixed thereto by means of an equally shaped, die-stamped plate, attached by means of nuts and bolts, in an arrangement that resembles a sandwich.

Abstract: A two-piece bearing isolator assembly for mounting roller or ball bearing races to a mounting structure for journalling a shaft. An outer Z-shaped metallic ring has outwardly and inwardly extending flanges on opposite axial margins. The outward flange retains the ring axially in a mounting structure; whereas, the inner flange retains plastic energy absorbing pads receiving the outer race, in line-to-line contact, of a bearing to be mounted. In one embodiment separate pads are disposed in circumferentially spaced apertures in the metallic ring. In another embodiment, separate pads are spaced circumferentially about an integrally formed plastic ring received in the metallic ring. The inner flange also serves as a stop for limiting radial movement of the bearing with respect to the mounting structure.

Abstract: A bearing isolator having an outer metal mounting ring adapted for attachment to a mounting structure, an inner metal mounting ring, adapted for registration on the outer race of a bearing for journalling a shaft, and an energy-absorbing ring of composite material radially intermediate the metal rings. A first plurality of relatively short spokes extends between the composite ring and the outer metal ring; and, a second plurality of relatively short spokes extends between the composite ring and the inner metal ring and is circumferentially staggered from the first plurality of spokes. Resilient wave-like radial deflection of the composite ring occurs between the spokes to absorb vibration and acoustic energy.