A steering wheel damper for a vehicle, and a manufacturing method thereof, the method includes putting a plate which is directly fixed to a steering wheel and has a plurality of through holes and a mass member having a predetermined weight to reduce vibration and a central pin in a mold in order, injection-molding rubber, and molding a connection member for connecting the plate and the mass member and a cushion member for limiting movement of the mass member. Therefore, the steering wheel damper and the manufacturing method thereof can simplify the manufacturing process, improve productivity, and enhance durability and marketability since the plate, the mass member and the connection member are firmly coupled and movement of the mass member is limited so that the mass member does not collide with surrounding components while the vehicle is shaken.

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.

A method for continuously manufacturing a complex acoustic multi-element panel for an acoustic attenuation structure, the method including supplying a thermoplastic resin film at the entry of a stamping system including at least one pair of complementary cylinders, a heating of the thermoplastic resin film upstream of the entry of the stamping system, and a passage of the thermoplastic resin film between the at least one pair of complementary cylinders, the pair of complementary cylinders including a male cylinder with teeth radially protruding from the cylinder and a female cylinder with cavities on its radial surface, the cavities of the female cylinder being of shapes complementary to the shapes of the teeth of the male cylinder and a separation of the stamped film at the exit of the stamping system using a separator disposed at the exit of the stamping system between the stamped film and the female cylinder.

A method and system for increasing damping capacity utilizing dry friction between individual wires of a rope embedded in a component formed from a composite is illustrated. The individual wires allow inter-wire friction to occur during part vibration. The component includes a body that is a molded matrix formed form a composite material. The body may be of any material selected from the group consisting of a polymer, a metal or a ceramic material. One or more vibration-damping ropes are embedded in the body. The vibration-damping ropes may be elongated segments or may be a rope having connected ends that form one or more rings. Each vibration-damping rope includes an outer layer of wires that surrounds a plurality of inner wires. Inflowing composite material is prevented from passing by the outer layer of wires and into the inner wires during the manufacturing process, thereby forming voids between the inner wires.

An isolator device comprises a first mount coupleable to an input structure subject to shock and/or vibration energy, a second mount coupleable to an object to be isolated (e.g., an electronics device). A flexure structure is coupled between the first and second mounts, and comprises a plurality of parallel flexures, a series of flexures, and a plurality of transition portions, all defining an isolation path between the first and second mounts. The parallel flexures are tuned to resonant frequency to attenuate shock and/or vibration in an axial direction relative to a normal axis. The series of radial flexures are tuned to resonant frequencies to attenuate shock and/or vibration energy in both radial directions relative to the normal axis. The isolator device can be a single piece of metallic material. An elastomeric damping material can be disposed within openings defined by the flexure structure to dampen response at the isolator's resonant frequency. Associated systems and methods are provided.

A shock-absorber and/or vibration-absorber device is proposed, comprising at least one flexible element able to deform under the effect of a stress; said device being remarkable in that it includes at least one so-called dissipative layer made from a material having a shear modulus lower than the shear modulus of the flexible element, a shock-absorbing factor greater than the shock-absorbing factor of said flexible element, and at least partially secured to said flexible element such that a flexion of the flexible element, under the effect of a stress, provides shearing of the dissipative layer making it possible to dissipate at least part of the energy from said stress. A method for manufacturing said shock-absorber device is also disclosed.

A bush main body having a circumferential part divided by a first virtual plane includes a first portion that is extended over a predetermined circumferential distance from the first virtual plane, a second portion that is disposed opposite the first portion with the first virtual plane sandwiched in between and is extended over a predetermined circumferential distance from the first virtual plane, and a third portion that is a portion other than the first and second portions. The inside diameter of the inner peripheral surface in a second virtual plane that includes an axial center and is perpendicular to the first virtual plane is set to be greater than the inside diameter of the inner peripheral surface in the first virtual plane while the first portion is in contact with the second portion in a no-load state before bonding to the stabilizer bar.

A support ring used as part of an air spring assembly, where the support ring provides support for a top cap against radial forces applied by a clamping ring. The support ring is made of a plastic material which is less costly than a metal support ring. The plastic material is a high creep resistance plastic material, which provides increased strength and improved creep resistance, to withstand the compressive radial forces of the clamping ring. Once the support ring is formed, the top cap, which is also made of plastic, is overmolded such that a portion of the top cap is overmolded around the support ring. The high creep resistance plastic material is oriented during the injection molding process around the entire circumference of the support ring, to provide sufficient strength to withstand the radial forces from the clamping ring.

An isolator device comprises a first mount coupleable to an input structure subject to shock and/or vibration energy, a second mount coupleable to an object to be isolated (e.g., an electronics device). A flexure structure is coupled between the first and second mounts, and comprises a plurality of parallel flexures, a series of flexures, and a plurality of transition portions, all defining an isolation path between the first and second mounts. The parallel flexures are tuned to resonant frequency to attenuate shock and/or vibration in an axial direction relative to a normal axis. The series of radial flexures are tuned to resonant frequencies to attenuate shock and/or vibration energy in both radial directions relative to the normal axis. The isolator device can be a single piece of metallic material. An elastomeric damping material can be disposed within openings defined by the flexure structure to dampen response at the isolator's resonant frequency. Associated systems and methods are provided.

An engine mount control apparatus that is an active noise vibration control apparatus according to the present disclosure is characterized by being provided with a housing that has an outer core, an inner core that is disposed inside the outer core, and an electromagnetic coil that is positioned between the outer core and the inner core and by a portion between the outer core and the inner core being filled with a magneto-rheological elastomer containing magnetic particles. The present disclosure enables the maintenance of good static load support performance.