摘要:
The present invention is a self-fusion type damping material formed from hard ferrite powder as a filler with a binder, in which the binder comprises an ethylene-vinyl acetate copolymer and a petroleum resin and 100 parts by weight of the combined binder and 150 to 600 parts by weight of the filler are mixed, or a self-fusion type damping material formed from hard ferrite powder and an auxiliary filler as a filler, if necessary, with a binder, in which the binder comprises an ethylene-vinyl acetate copolymer and a petroleum resin and 100 parts by weight of the combined binder and 100 to 600 parts by weight of said combined filler, in which the amount of said hard ferrite powder is in the range of 50 to 400 parts by weight and that of said auxiliary filler is in the range of 1 to 200 parts by weight, are mixed.
摘要:
The present invention provides a method for internally damping a rotatable storage article which is subject to resonant vibrations. More specifically, the present invention provides a method of improving the damping properties of a rotatable storage article by introducing a viscoelastic material as an inner layer(s) of the rotatable storage article. The invention also provides the damped rotatable storage articles themselves.
摘要:
A rotary damper comprising a housing and a cylindrical rotor rotatably supported in the housing, and an annular clearance between the rotor and housing being filled with a viscous flowable material, wherein the housing comprises a pivot extending from one end inwardly within the housing and forming an annular space with the housing; and the rotor comprises an annular cylindrical portion received by the annular space and forming annular clearances filled with the viscous material at both sides thereof.
摘要:
The cylindrical enclosure 12 of a recuperator 10 as in FIG. 2 contains an annular coaxial heat exchanger 50 full of cooling liquid 22 circulating therethrough. Exhaust gas from an internal combustion engine flows from an inlet end 32 through the heat exchanger 50, first in an axial region 15 via a conduit 14, then back through a surrounding annular region 18, then through tubes 37 to an outlet end 34. The inlet 30 and outlet 31 for the gas are in the side wall 40 of the cylindrical body 12, and the exhaust gas 11 enters and leaves via conduits 14 and 19 that are perpendicular to the side wall 40 at the inlet 30 and at the outlet 31. So the ends 41 and 42 of the body 12 are free of adjacent obstruction, and at least one of them is removable, as in FIG. 4 or FIG. 5 . Thus, the recuperator 10 can be opened and closed to make the interior accessible for inspection, cleaning, or other desired purpose.
摘要:
A bonded structure 1 including an aluminum alloy plate 3 and a rubber 7 of vibration proof rubber adhering to each other with an adhesive wherein the aluminum alloy plate 3 includes aluminum alloy containing no more than 12% by weight of silicon and no more than 2.2% by weight of copper and the application of such aluminum alloy to the bonded structure 1 decreases the total weight of the structure 1 and improves both corrosion resistance and adhesiveness under corrosive conditions wherein the bonded structure is favorably applied to damper pulleys and shock-absorbing body mounts of vehicles.
摘要:
A fused plastisol shock absorbing pad that is encapsulated in an impermeable elastic cover formed from a blown polyester or polyether based urethane film and the method for manufacturing the same that includes the steps of forming the film cover, filling the film cover with the liquid plastisol, heating the pad to fuse the plastisol. In an application of the pad on bicycle seats, a pad assembly is provided that, in addition to the pad, includes a pad retainer constructed from stretch material, this fits over the pad and securely holds the pad on the bicycle seat.
摘要:
A composite structure of elastic and viscoelastic components in which dynamic loads are effectively damped by transmission through the viscoelastic components. The structure includes a continuous sandwich comprised either of a single elastic layer enclosed by two viscoelastic layers or of a single viscoelastic layer enclosed by two elastic layers such that the sandwich has little stiffness in any intended direction of loading, and two segmented elastic layers having stiffness in a desired loading direction. The segmented layers have alternating segments and gaps and are disposed one on each side of the viscoelastic layer in such a manner that the gaps of one segmented layer overlap the segments of the other segmented layer. Dynamic loads in the loading direction are transmitted back and forth from one segmented layer to the other, through the continuous sandwich layer containing the viscoelastic material, which thereby provides a high degree of damping. Static loads in the loading direction are transmitted through the elastic material in the continuous sandwich layer. By appropriate selection of elastic materials, the structure can be made suitable for the damping of loads in all directions while maintaining considerable strength and static stiffness. Appropriate selection of fiber orientations can increase the damping effect on either axial and bending loads, or on torsional loads.
摘要:
In the field of viscoelastic dampers, a new strut design comprises a viscoelastic material sandwiched between multiple layers, some of which layers bear and dampen load force. In one embodiment, the layers are composite plies of opposing orientation. In another embodiment, the strut utilizes a viscoelastic layer sandwiched between V-shaped composite plies. In a third embodiment, a viscoelastic layer is sandwiched between sine-shaped plies. Strut strength is equal to or greater than conventional aluminum struts due to the unique high interlaminar shear ply design.
摘要:
To extend the temperature range of composite materials the composite material is made up of more than two hard layers which are joined with thin intermediate layers of viscoelastic material where one intermediate layer differs from another intermediate layer in that its softening range lies in a different temperature range so that the damping ranges of the intermediate layers also are different.
摘要:
An apparatus for damping a plurality of vibrations applicable to an apparatus for mounting a vehicular engine on a vehicle body. The apparatus comprises: (a) a first block; (b) a second block; (c) a block member for damping first vibrations having high frequencies and having large amplitudes, the first vibrations being generated and transmitted from the first block to the second block; and (d) at least one viscous shearing force resistance generator for damping second vibrations having low frequencies and large amplitudes, the second vibrations being generated and transmitted from the first block to the second block and from the second block to the first block. The viscous shearing force resistance generator is formed within the block member. The viscous shearing force resistance generator, e.g., comprises: (a) a cavity formed within the block member; (b) a viscous fluid having a high viscosity filled within the cavity; and (c) at least one shearing resistant element disposed within the cavity with minute gaps against the opposing inner wall surfaces of the cavity.