First to Nth plate-shaped members (N: an integer not less than 3) are arranged at multiple stages. The plate-shaped member for a kth number counted from the first plate-shaped member is defined as a kth plate-shaped member (k: integers from 2 to N1). The first plate-shaped member has a first wire support portion. The kth plate-shaped member has a kth through hole through which a (k1)th wire support portion of the (k1)th plate-shaped member penetrates. A (k1)th wire suspending the kth plate-shaped member is provided at an upper part of the (k1)th wire support portion penetrating through the kth through hole. A kth wire support portion is provided adjacently to the kth through hole in a predetermined rotational direction around a reference point on the kth plate-shaped member.

A composite material 100 is obtained by laminating and tightly adhering a fabric 60 containing fibers made of spider silk fibroin and a synthetic resin film 50 having a tensile elongation equal to or greater than that of the fabric 60.

According to one embodiment, a vehicle suspension member includes a body of a vehicle suspension member made of a metal, a first layer provided to cover a surface of the body and a second layer provided to cover at least a portion of a surface of the first layer. The first layer includes an epoxy resin, and the second layer includes an epoxy resin and a fluororesin.

Provided is an unconstrained vibration damping metal sheet with foam pores. The unconstrained vibration damping metal sheet of the present invention comprises: a metal sheet; an organic-inorganic pretreatment layer containing an acrylic resin formed on the metal sheet; and a foam resin layer formed on the pretreatment layer, the foam resin layer containing, based on weight % thereof, a thermoplastic polyvinyl chloride resin: 40-80%, a plasticizer: 5-40%, a foaming agent: 0.1-10%, an oxide-based crosslinker: 1-4%, and spherical silica: 1-10%.

Disclosed is a method of manufacturing a damping device, for damping vibrations and/or absorbing shocks, and the corresponding device are disclosed, including: implementing an Additive Manufacturing step to produce a monolithic structure including a first flexible element and at least a second flexible element extending parallel to the first flexible element, wherein at least the first flexible element includes through-going apertures; providing a material, in the region between the first flexible element and the at least second flexible element, which changes physical and/or chemical state to turn into a viscoelastic material when it is submitted to a suitable predefined treatment; and applying the suitable predefined treatment to the material to conform a dissipative layer of viscoelastic material, extending between the first flexible element and the at least second flexible element and secured to both of them, wherein the through-going apertures are at least partially filled by the viscoelastic material.

An isolation energy absorber has at least one core post, two supporting boards, multiple first material layers, and multiple second material layers. The at least one core post is a columnar body and is made of zinc metal or zinc alloy that has been metal smelted to have a shear strain capacity of at least 50%. The two supporting boards are respectively disposed on two ends of the isolation energy absorber at a spaced interval. The first material layers and the second material layers are alternately mounted between the two supporting boards and surround the at least one core post.

A shock absorber includes an expansion-side passage and a contraction-side passage arranged alternately side by side along a circumferential direction, seats provided to surround an outlet port of the expansion-side passage or an outlet port of the contraction-side passage, and valve bodies. The seats has an arc-shaped outer seat portion, middle seat portions extending from respective both ends in a circumferential direction of the outer seat portion toward a center axis side of the piston, and an inner seat portion extending from center axis side ends of the middle seat portions oppositely to the outer seat portion side in a circumferential direction to connect the neighboring middle seat portions. The inner seat portion is placed on a straight line that connects the center axis side ends of the middle seat portions.

Provided herein is are multilayer damping laminates comprising alternating damping and constraining layers. The materials and configurations of the damping layers are selected such that the damping layers have a decreasing glass transition temperature profile beginning at the first damping layer, allowing the laminates to effectively dissipate vibrations over a wider range of operating temperatures and/or frequencies. Also provided are systems and methods using the multilayer damping laminates.

An elastomeric bushing for vehicle suspension includes inner and outer metal tubes, an elastomeric material between the tubes, and one or more bundles of woven wires (ropes or cables) in entangled or mesh form wherein at least a portion of the wires contact at least one of the tubes. The bushing has enhanced thermal conductivity via metal-to-metal contact and improved damping capacity to reduce heat buildup inside the material upon cyclic loading and unloading. The metallic wire rope, metallic wire ropes or wire mesh are embedded in the elastomeric material during injection molding where the ends of the wire ropes are attached to the opposing side walls of the inner and outer metal tubes or are spaced apart from the opposing side walls for tunability and to thereby enable a more effective dissipation of the heat generated inside the elastomeric bushing during its usage into the kinematically connected suspension members.

A torsion spring may be formed as a bar spring or helical spring comprising a spring wire of fiber composite material. In some examples, the torsion spring comprises a number of layers of fiber reinforcement, which are impregnated with a matrix material. The layers may comprise tensile-loaded fibers and compression-loaded fibers. Groups of layers of the same loading direction may exist and, seen from an inside to an outside, the group stiffness of at least two groups may differ. Likewise, methods for making such torsion springs of fiber composite material are disclosed.