Abstract: Since an airbag module is supported in an interior of a steering wheel via an elastic body so as to be capable of vibrating, the airbag module vibrates while deforming the elastic body to thus function as a dynamic damper, thereby enabling vibration of the steering wheel to be suppressed. Since the elastic body is formed from a support pin itself, which supports the airbag module on the frame of the steering wheel, compared with a case in which the support pin and the elastic body are formed from separate members, it is possible to reduce the number of components and the number of assembly steps. A part of the support pin may form the elastic body, and the entirety of the support pin may form the elastic body.

Abstract: A tool holder (1) in the form of a boring head, a chuck, a milling cutting arbor, or the like, is equipped with a damping element (2) in the form of an elongated body that is arranged in an end housing (3) of the tool holder (1), with corresponding shape and size. The tool holder that is characterized in that it includes a device (4) for preventing excessive heating of the damping element (2). The tool holder is more particularly applicable in the field of numerically-controlled machine tool accessories, machining centers, and flexible cells and workshops.

Abstract: An inflator (10) for a vehicle airbag module comprises an external housing (12) in which a combustion chamber (36) is formed, wherein the inflator (10) can be supported to be oscillating on a body-side component of the vehicle, especially on a component of the airbag module. Inside the external housing (12) a separate balancing weight (58) is arranged for adjusting the vibration behavior of the inflator (10), wherein the balancing weight (58) has no further inflator-specific function. In an airbag module for a vehicle including such inflator (10) the latter is supported by its retaining means on another component of the airbag module so that it is adapted to oscillate about a suspension plane.

Abstract: A damper device is coaxial with a central axis of an electric compressor. The damper device includes a base portion and first and second weight portions. The base portion is configured to be fixed to a casing of the electric compressor. The first and second weight portions are oscillatable relative to the base portion.

Abstract: A vibration damping mechanism allows increase of an absorption amount of vibration energy, with less possibilities of increase in the manufacture cost of a vibration damping weight and of reduction in the strength of a shaft section. Within a cylindrical hollow portion formed inside the shaft section, there are accommodated a plurality of weight members divided from each other along the circumferential direction about the axis of the hollow portion. An urging member is provided for urging the weight members toward the axis such that dividing faces of adjacent weight members are brought into surface contact with each other.

Abstract: A damper having an elastic body formed from a cross-linking product of an EPDM composition, which comprises (a) 100 parts by weight of at least one kind of EPDM, whose propylene content in sum total of ethylene and propylene in the copolymerization rubber is 35-50 wt. %, the EPDM having a Mooney viscosity (ML100) of not less than 40, (b) 5-50 parts by weight of ?-olefin oligomer, which is a polymer of ?-olefin represented by the general formula, CH2CHR, where R is an alkyl group having 3-12 carbon atoms, with a number average molecular weight Mn of 300-1,400 and (c) 1-10 parts by weight of an organic peroxide cross-linking agent.

Abstract: The present invention relates to a damping and dissipation device (10) which can be used for limiting disturbances transmitted between two bodies, generated by forcing elements of a dynamic, seismic nature and by wave-motion in structures in general, which comprises two end elements (18, 14, 32) each destined for being respectively connected to one of the two bodies, the device (10) also comprising at least one disk (11) made of an elastomeric material and at least one elastic element (12) with a variable load, coaxially arranged along an axis A, the elastic element (12) with a variable load having an initial pre-compression degree and is characterized in that at least one of the end elements (18) is connected to the device (10) through a sliding coupling with a sliding direction within a plane tilted with respect to the axis (A), preferably by at least 60°.

Abstract: Provided is a vehicle-mounted active vibration reducing device wherein vibrations in a plurality of directions are reduced by a single dynamic damper. Since an actuator is attached so as to be supported by an elastic member attached to a bracket, the actuator can be used as a mass of a dynamic damper. The moving directions of the actuator are the forward and rearward directions, and are different from the moving directions of the dynamic damper using the actuator as a mass, i.e., the upward and downward directions. Accordingly, vibrations can be controlled in the forward and rearward directions which correspond to the moving directions of the actuator as well as the upward and downward directions which correspond to the moving directions of the dynamic damper.

Abstract: A structure for absorbing energy from impacts thereon, the structure being plastically deformable by an impact, with, if appropriate, the possibility that it is at least to some extent disrupted. The structure can include a) ribs for reinforcement, the ribs arranged with respect to one another at an angle with respect to the axial direction such that on failure of a rib a force acting on the structure is immediately absorbed axially by another rib, b) ribs running axially, the ribs being in essence corrugated or of zigzag shape, c) at least one rib running axially in a first plane and connected to at least two ribs running axially in a second plane rotated with respect to the first plane. The structure includes, in the direction of impact, at least two layers, each of which has different compressibility properties and different failure properties.

Abstract: By providing a tube of deformable material which can be located within a hollow cavity of a blade it is possible to provide an element which through friction engagement can absorb vibration energy and therefore damp vibration in a hollow blade. The tube incorporates a number of cuts and/or grooves in an appropriate pattern in order to define a deformation profile once the tube is expanded in location. The tube is secured in position internally upon an expandable element which is typically an inflatable device. Once in position the tube is retained in its expanded deformable profile and the engagement between the tube and the hollow cavity wall surface results in energy absorption through vibration episodes. It is possible to provide a tube formed from a shape memory alloy which will expand in location to engage the hollow cavity wall surfaces for energy absorption during vibration episodes.

Abstract: The present disclosure relates to a vibration absorber for a drive train of a motor vehicle, including an internal carrier which can be rotated around a rotation axis, a mass ring which is coaxial to the internal carrier and which is arranged at a radial distance from the internal carrier, and a plurality of spring elements which connect the internal carrier and the mass ring to each other. The mass ring has at least one radial profile formation on the inner circumferential surface thereof to provide sliding support in the circumferential direction and is provided with an elastomeric damping layer arranged between the internal carrier and the mass ring, the layer being designed such that the mass ring slides at least in the region of the at least one radial profile formation thereof in the circumferential direction on the internal carrier during a relative rotation.

Abstract: A damper for decreasing a piping vibration capable of enhancing the efficiency in decreasing the piping vibration and adjusting the weight of a weight portion according to the type of the compressor and the shape of the pipe applied to the compressor by separating a fixed portion from a weight portion such that the fixed portion makes a direct contact with a pipe and the weight portion has an interval from the pipe without making a direct contact with the pipe, in which the damper installed on the pipe to decrease the vibration includes a fixation part provided with a coupling hole formed therein to be coupled to the pipe, and coupled and fixed to the pipe such that the coupling hole makes contact with an outer circumferential surface of the pipe, and a weight part connected to the fixation part.

Abstract: An antivibration suspension device (10) comprising at least one tie bar (15) hinged via a bottom end (17) to suspension means (20), the suspension means (20) having a lever (25) extending from a distal end (26) supporting at least one flyweight (30) to a proximal end (27) having a first hinge (35) to a carrier structure (2), a tie bar (15) being hinged via a second hinge (40) to the lever (25). The device includes torsion return means (45) having a rotary actuator (46) with an outlet shaft (47) secured to said lever (25) to generate torque on said lever (25), said device having a computer (50) controlling said actuator (46) to adapt torsion stiffness of the lever (25) to flight conditions.

Abstract: A structure of a roll-rod for a subframe filled with a hydro liquid therein, may include a bracket bar, an inner pipe including a cylindrical pipe and a supporting plate joined with the cylindrical pipe, an endplate joined to the cylindrical pipe, an outer pipe enclosing the inner pipe between the bracket bar and the endplate and including an extension part, where the supporting plate may be disposed with a gap in the extension part having a curved shape, an insulator forming a front liquid chamber and a rear liquid chamber with the supporting plate to receive the hydro-liquid therein, and a housing, wherein the supporting plate may move relative to the outer pipe such that the gap varies while the insulator is elastically transformed according to movement of the bracket bar and the endplate.

Abstract: A control method for a parking release apparatus of a shift-by-wire shifting device can improve the commercial value of a vehicle by improving safety of the vehicle and preventing robbery, by interfering with or preventing an attempt of abnormally and manually releasing a parking state of the vehicle when there is no problem in the electric system of the vehicle, using a part provided to be manually operated in the parking release apparatus such that a P-stage state and an N-stage state can be manually switched when a problem, such as discharge, occurs in the electric system, in the vehicle equipped with a shift by wire apparatus.

Abstract: A system for absorbing vibration in a rotary member having a predetermined rotary speed of the present invention has a selectively moveable mass and a positioning mechanism. The mass is in communication with the rotary member having a predetermined position. The positioning mechanism exerts a force on the mass at least when the rotary member operates below the predetermined rotary speed. The force exerted by the positioning mechanism orients the mass at the predetermined position when the rotary member operates below the predetermined rotary speed.

Abstract: Particular embodiments relate generally to vibration isolation systems and tuned mass dampers. In one embodiment, a vibration isolation system may include a supporting base, an isolated mass, at least one air mount, a control valve, a compressed air supply, and a supervisory controller. The air mount is positioned between the isolated mass and the supporting base. The control valve is pneumatically coupled to the air mount, the compressed air supply and the atmosphere, and is operable to adjust a flow of air to and from the air mount. The supervisory controller receives a mass relative height signal, a mass relative velocity signal, and a mass relative acceleration feedback signal corresponding to a relative acceleration of the isolated mass or a pressure of the air mount.

Abstract: A temperature-compensating damping element, which is suitable for the temperature-independent reduction of vibrations, which has a fixed, non-elastic outer part and a fixed, non-elastic inner part, which is either inserted fully or partly into a mating cut-out or opening of the outer part. The outer and inner parts have contact surfaces which are connected to one another by an elastic layer which comprises an elastomer material and which is, or can be, pre-tensioned with respect to a desired frequency by a tensioning element. The elastic layer which is responsible for the vibration damping is directly connected at one or more points to an additional elastic volume. The additional elastic volume is a multiple of the volume of the elastic layer, and has the effect that the excitation frequency of the damping element changes in the case of a temperature change within a temperature range.

Abstract: The present invention relates to a wind turbine tower suspension arrangement comprising magnetic attachment means adapted to magnetically secure the suspension arrangement to an inner surface portion of the wind turbine tower. The suspension arrangement further comprises guiding means adapted to guide an element suspended in a substantially longitudinal direction of the wind turbine tower, the guiding means being connected to the magnetic attachments means. Moreover, the present invention relates to the method for applying a wind turbine tower suspension arrangement.

Abstract: A dynamic vibration absorber (1) includes: a weight (2); a frame body (3) which surrounds the weight (2); a total of four pairs of vertically mounted U-shaped leaf springs (4, 5, 6 and 7) which are interposed between the frame body (3) and the weight (2) so as to hold the weight (2) with respect to the frame body (3) movably with respect to all directions in a horizontal plane and immovably in a vertical direction (V); and a damping mechanism 8 for damping the vibration of the weight (2) in the horizontal plane.

Abstract: A damper for a linear element of a motor vehicle drivetrain such as a cable, a transmission oil fill tube or an engine oil dipstick tube constitutes a loose fitting sleeve or annulus disposed about the linear component. The damper may be positioned on a substantially vertical tube by a stop which may be any device such as a sleeve of material having an outside diameter larger than the inside diameter of the damper that is clamped or secured to the tube. Alternatively, the damper may be of sufficient length that one end may be clamped to the tube while the other end, which loosely fits on the tube, acts as a damper. The damper may be fabricated of a material such as closed cell foam or other relatively lightweight, resilient and compressible material.

Abstract: The present disclosure relates to spare tire damper assemblies for a vehicle and methods for reducing vibration. The assemblies can include a support frame configured to secure a spare tire thereto and a first adjustable isolator positioned with respect to the support frame. A second isolator is positioned in series with the first isolator so that adjustment of the first isolator adjusts a static preload of the second isolator.

Abstract: A vibration damping mechanism (90) for damping vibrations to prevent coupling of vibration modes of the carrier structure (106) with vibration modes of a rotor (100) secured to the carrier structure (106). The mechanism comprises a support (3) suitable for being fastened to the rotor (100) and at least one resonator (1) including a mass (5) carried by the support (3) via mobile mounts (6) for mounting the mass (5) to move on the support (3), the mechanism (90) including at least one damper (8) for damping the resonator (1), with the damper being interposed between the resonator (1) and an engagement member (9) on the support (3).

Abstract: The invention provides a vibration filter mechanism for aircraft equipment. A weighted lever arm (5) is hinged via bearings (22, 23) associated respectively with a first structure connected to a fuselage and with a second structure connected to the equipment (12). Deformable means (7) oppose pivoting movement of the lever arm. The lever arm (5) is arranged as a one-piece fork that comprises a pair of branches (19, 20) that are interconnected by a crossbar (21) and that are hinged to the bearings (22, 23) about spaced-apart parallel pivot axes (A1, A2). The fork carries a torsion shaft (24) that extends between the branches (19, 20) at their free ends (9), the torsion shaft (24) constituting the weight weighting the lever arm (5) and the deformable means (7) of the mechanism.

Abstract: The damping device comprises a cluster of resonators with a predetermined frequency distribution, that, when attached to a main or ‘master’ structure, is capable of absorbing irreversibly its vibrational or/and acoustic energy produced by a vibrating body. the density of natural frequencies of the plurality of resonators is comprised within a curve that lies below the envelope curve determined by the formula, e( )=1/?1.

Abstract: The present disclosure relates to a vibration damper, in particular for a drive train of a motor vehicle, having a support body which is rotatable about an axis of rotation M, a damper mass which is coaxial with respect to the support body and which is arranged with a radial spacing to the support body, and a plurality of spring elements which connect the support body and the damper mass to one another. It is provided that the support body has axial travel limiting means which extend on the support body in the radial direction relative to the damper mass so as to limit a displacement of the damper mass in the axial direction relative to the support body.

Abstract: A system and method to adjustably create a reacting force in response to a vibrating force of a vibrating structure. The system includes an adjustable vibration absorber that creates a range of reacting forces. The method includes continuously monitoring the reacting force and the vibrating force with a sensor system operably associated with a control unit having an algorithm to determine if adjustment of the vibration absorber is required. If required, the control unit commands a driver to selectively adjust the vibration absorber such that the reacting force equals the vibrating force.

Abstract: An apparatus having reduced phononic coupling between a graphene monolayer and a substrate is provided. The apparatus includes an aerogel substrate and a monolayer of graphene coupled to the aerogel substrate.

Abstract: An apparatus and method for attenuating noise and vibration in a propeller aircraft comprises a tuned vibration absorber adapted to be mounted to the skin of a fuselage of a propeller aircraft. The tuned vibration absorber may be tuned to the second harmonic of a blade passage frequency of a propeller of the aircraft. The tuned vibration absorber may be connectable to a separately formed mount, which can be mounted to the fuselage skin independently of the tuned vibration absorber. The apparatus may include a cover to prevent interference between the tuned vibration absorber and other components in the aircraft. The apparatus may be used in combination with other attenuation systems to attenuate noise and vibration over a broad range of frequencies.

Abstract: A vibration attenuation apparatus may include a mass element, a bracket, and an elastomeric member. The mass element may include a first aperture. The bracket may include first and second portions. The first portion may be attached to a structure that transmits an input vibration. The elastomeric member may engage the mass element and the second portion of the bracket and may suspend the mass element relative to the bracket. The elastomeric member may include a shaft portion and a barb portion. The shaft portion may engage the second portion of the bracket. The barb portion may engage the first aperture of the mass element. The elastomeric member may include properties allowing the mass element to move relative to the bracket in response to the input vibration at a frequency that reduces an amplitude of the input vibration.

Abstract: Disclosed is a damper that is easy to mount and capable of attenuating to a sufficient degree a vibration generated by an electronic component; also disclosed are an electronic component and an electronic apparatus that are provided with such a damper. A mounting insertion portion is provided with a hard portion maintaining the configuration of the mounting insertion portion.

Abstract: A damper for a steering wheel is provided. The damper may include a housing attached to the steering wheel and an energy-storage medium supported by the housing.

Abstract: A method for checking a vibration damper of a motor vehicle in the installed state includes setting start values of the damping constant kA, the spring rate cA, and the body mass mA for a wheel of a motor vehicle; inducing a vertical vibration of the motor vehicle with the aid of a defined excitation sRreal; determining the theoretical body vibration excursion sAmodel; optically detecting the positions of the wheel and the body shell of the motor vehicle at a plurality of detection instants during the vibration; minimizing the error function formed from the deviations between the theoretical body vibration excursion sAmodel and the observed body vibration excursion sAreal at the detection instants, and determining the damping constant kA, the spring rate cA, and the body mass mA therefrom; and determining the damping measure ? of the vibration damper.

Abstract: An item assembly and a shock attenuation method for protecting an item comprising providing an item internal to an assembly and encasing the item in a fluid material such that the material and the item are approximately in hydrostatic balance upon an impact event.

Abstract: The present disclosure relates to a vibration absorber for a drive train of a motor vehicle, including an internal carrier which can be rotated around a rotation axis, a mass ring which is coaxial to the internal carrier and which is arranged at a radial distance from the internal carrier, and a plurality of spring elements which connect the internal carrier and the mass ring to each other. The mass ring has at least one radial profile formation on the inner circumferential surface thereof to provide sliding support in the circumferential direction and is provided with an elastomeric damping layer arranged between the internal carrier and the mass ring, the layer being designed such that the mass ring slides at least in the region of the at least one radial profile formation thereof in the circumferential direction on the internal carrier during a relative rotation.

Abstract: A tuned mass damper is designed for a machine tool head that moves in the X, Y, and Z directions and rotates around a C-axis that is coincident with the axis of an arm that supports the head. The damper comprises a pair of damper masses symmetrically arranged around the head. Each damper mass has a center of gravity which is approximately in the geometric center of the mass. A resilient mounting is provided for each of the damper masses allowing the damper masses to damp out vibration in the X and Y directions regardless of the orientation of the head.

Abstract: A damper for decreasing a piping vibration capable of enhancing the efficiency in decreasing the piping vibration and adjusting the weight of a weight portion according to the type of the compressor and the shape of the pipe applied to the compressor by separating a fixed portion from a weight portion such that the fixed portion makes a direct contact with a pipe and the weight portion has an interval from the pipe without making a direct contact with the pipe, in which the damper installed on the pipe to decrease the vibration includes a fixation part provided with a coupling hole formed therein to be coupled to the pipe, and coupled and fixed to the pipe such that the coupling hole makes contact with an outer circumferential surface of the pipe, and a weight part connected to the fixation part.

Abstract: A method for damping aeroelastic modes, including limit cycle oscillations (LCO), is implemented by determining a mass for a tuned mass damper (TMD) based on an modal frequency for a mode having a potentially positive growth rate and attaching a TMD to at least one attachment point with significant motion such that a damping axis of the tuned mass damper is substantially oriented in a direction aligned with the local modal deflection.

Abstract: A damper device is coaxial with a central axis of an electric compressor. The damper device includes a base portion and first and second weight portions. The base portion is configured to be fixed to a casing of the electric compressor. The first and second weight portions are oscillatable relative to the base portion.

Abstract: A device configured to be arranged on a crankshaft includes a base having a hub journal, the hub journal extending in an axial direction and having a centered opening configured to receive a mounting screw. A hub rim surrounds the hub journal. An inertia ring encircles the hub rim and is connected to the hub rim via an elastomer. At least one of the hub rim and the hub journal is fitted with a support device configured to provide support against a torque. The support device includes elements that project in a pin-like manner from the at least one of the hub rim and the hub journal in the axial direction.

Abstract: A system for isolating vibration among a plurality of instruments on a spacecraft includes at least two platforms, each of which is configured to couple to and isolate vibration for a single one of the plurality of instruments. Each of the at least two platforms is configured to mount to the spacecraft. A device is also provided for isolating vibration for one instrument among a plurality of instruments on a spacecraft.

Abstract: An oscillation damper (3) which is designed for being mounted on a housing (2) of a hand-held power tool (1) and includes an oscillating damping mass (4); and at least one spring (5) located completely, with respect to its axial length, within the damping mass (4) for axially compressively preloading the damping mass (4) against the housing (2) of the power tool (1).

Abstract: A Tuned Mass Damper (TMD) for reducing vibration and noise radiation from rails incorporates a series of oscillation mass (8) of different sizes held in position by layers of resilient material (9) and attached to the rail via several steel mounting plates (4). Each mounting plate (4) is fixed to the rail by two magnets (5). A bolt (10) is inserted through the mounting plates (4), resilient layers (9) and oscillation masses (8) alternatively. The bolt (10) is fixed to a middle mounting plate (4) such that different compressive forces can be provided on the two sides by tightening nuts (11) to different pre-set torques. When the resonance frequency of the oscillation masses (8) is tuned to that of rail, most of the rail vibration energy at resonance frequency is transferred to the oscillation masses (8) and eventually dissipated in the resilient layers (9).

Abstract: The present disclosure relates to a vehicle braking assembly with reduced squeal, having: a brake pad operative to apply a braking force to a brake rotor or drum, the brake pad being subject to vibration during braking; and a damper attached to the pad, configured to force a squeal reducing vibration in the brake pad, the damper including: (i) a first mass; (ii) a second mass connected to the first mass by a first shaft; and (iii) a third mass connected to the first mass by a second shaft.

Abstract: It is intended to provide a vibration control apparatus that can be installed in a small pace and can be produced at low cost, as well as a wind turbine generator equipped with the vibration control apparatus and a vibration control method. The vibration control apparatus 7 includes a first vibration system 10 of inverted-pendulum type, second vibration systems 20 of inverted-pendulum type which are provided on both sides of the first vibration system 10, a restraining unit 30 which restrains a first weight 11 of the first vibration system 10 and a second weight 21 of the second vibration system 20 and a damper which damps vibration of the first weight 11 and the second weight 21. The vibration control apparatus 7 is installed on an upper floor 8a of a plurality of floors 8.

Abstract: A vibration isolating system is disclosed. The vibration isolating system comprises a passive mechanical system comprising a damping assembly, a first resilient member coupled in series with the damping assembly, and a second resilient member coupled in parallel with the series combination of the damping assembly and the first resilient member. The vibration isolating system further comprises a support member coupled in series with the passive mechanical system, a viscoelastic mount coupled to the support member, and a motion limiter coupled to the support member such that the passive mechanical system transmits a force to the support member when the passive mechanical undergoes longitudinal displacement greater than a predetermined displacement.

Abstract: A damper for a steering column assembly includes a housing attached to and extending along an axis of the steering column assembly. A mass is attached to a distal end of the housing with a resilient member being disposed between the housing and the mass that permits movement of the mass along an axis that is substantially parallel to the axis of the steering column assembly relative to the housing to absorb vibrational forces exerted on the steering column assembly along the axis.

Abstract: A servo system is provided for controlling movement of a flexible structure having multiple masses and elements. Each element couples a respective two of the masses and functions as a spring when the flexible structure is subject to a linear or rotational input at or above a frequency at which the respective element exhibits flexure. The servo system includes multiple sensors, where each sensor is disposed relative to a respective one of the masses to sense a respective acceleration. A motor having a torque input may operatively be configured to output one of a linear or rotational force on the first mass based on a torque signal present on the torque input. A servo controller that receives each sensed acceleration from each sensor may generate a compensation feedback signal based on a sum of sensed accelerations. The torque signal may be output to the motor based on the compensation feedback signal.

Abstract: A multi-axis spring damping element includes two spring damping cushion members received between caps on a bolt shaft, and an axial adjustment mechanism at a free end of the bolt shaft. The other end of the bolt shaft is connected to a support structure, and a load to be supported in a vibration-damped manner is carried by intermediate caps between the two spring damping cushion members. A plurality of such spring damping elements forms a spring damping system, for example for supporting a payload-carrying pallet on a load platform of a spacecraft.

Abstract: It is intended to provide a vibration control apparatus that can be installed in a small pace and can be produced at low cost, as well as a wind turbine generator equipped with the vibration control apparatus and a vibration control method. The vibration control apparatus 7 includes a first vibration system 10 of inverted-pendulum type, second vibration systems 20 of inverted-pendulum type which are provided on both sides of the first vibration system 10, a restraining unit 30 which restrains a first weight 11 of the first vibration system 10 and a second weight 21 of the second vibration system 20 and a damper which damps vibration of the first weight 11 and the second weight 21. The vibration control apparatus 7 is installed on an upper floor 8a of a plurality of floors 8.