A strut mount includes an inner member, an outer member, and a body rubber. A stopper rubber which protrudes outward in an axial direction is disposed on the body rubber. The outer member includes a supporting portion which covers the stopper rubber from outside thereof in the axial direction. The stopper rubber includes a pedestal protrusion portion which protrudes outward in the axial direction from the inner member and a tip protrusion portion which protrudes outward in the axial direction from the pedestal protrusion portion, contacts the supporting portion, and has an elasticity in the axial direction lower than that of the pedestal protrusion portion. The pedestal protrusion portion and the tip protrusion portion taper outward in the axial direction.

A power transmitting device includes a first rotor and a second rotor rotatably disposed coaxially with a rotational central axis and in facing relation to each other, a single arc spring that is elastically deformable to a large extent and has a small modulus of elasticity, the arc spring being interposed between the first rotor and the second rotor for urging the first rotor and the second rotor to opposite sides in a ration direction, a first pressing protrusion projecting from the first rotor and a second pressing protrusion projecting from the second rotor, the first pressing protrusion and the second pressing protrusion being disposed in relative positions on superposed rotation trajectories, and a rubber member that is elastically deformable to a small extent and has a large modulus of elasticity, the rubber member being interposed between the first pressing protrusion and the second pressing protrusion with gaps therebetween.

Materials, methods, and manufacture for controlled kinetic energy conversion are provided. In an aspect, a material may include a first section having a first set of voids and an associated first set of properties (e.g., mechanical, thermal), and a second section having a second set of voids and an associated second set of properties. The second set of properties of the second section may be configured to be selectively adjusting by at least partially filling one or more of the second set of voids with a substance. The substance may be configured to inhibit, prevent, or otherwise affect a desired deformation or collapse behavior of the material in response to a load.

A shock absorber having a plurality of pistons in a telescopic or nested configuration. The shock absorber has a first shaft with a first piston disposed within a cylinder filled with a hydraulic fluid. A second shaft is in turn disposed within the first shaft, the second shaft having a second piston extending beyond the position of the first piston. The second shaft is further coupled to a vehicle's suspension system. When undergoing a displacement, the second piston moves through the cylinder and compresses an external spring. After the second shaft has been fully extended, the first piston is then actuated, thereby also moving through the hydraulic fluid. As the pistons traverse through the cylinder, a volume of the fluid is pushed into a reservoir communicated to the cylinder. Both the first and second shafts are configured to move independently with respect to each other and to the cylinder.

A hydraulic compression stop (HCS) assembly includes an HCS base defining an HCS window providing fluid communication between a compression chamber of a damper and an exterior space; a spring guide movable relative to the HCS base by action of a piston; and a closure member attached to the spring guide and configured to selectively and progressively cover a portion of the HCS window to restrict fluid flow therethrough, with the portion of the HCS window covered varying with a position of the spring guide relative to the HCS base. A damper assembly includes a tube defining an interior chamber; a piston slidably disposed in the tube and dividing the interior chamber into a rebound chamber and a compression chamber; and the HCS assembly disposed at least partially within the compression chamber to restrict fluid flow therethrough, the restriction varying in response to the piston moving toward the HCS base.

A head unit device for controlling motion of an object includes a chamber filled with a shear thickening fluid (STF) and a piston. The piston is housed within the chamber and exerts pressure against the STF from a force applied to the piston from the object. The STF is configured to have a decreasing viscosity in response to a first range of shear rates and an increasing viscosity in response to a second range of shear rates. The piston includes at least one piston bypass between opposite sides of the piston that controls flow of the STF between the opposite sides of the piston to selectively react with a shear threshold effect of the first range of shear rates or the second range of shear rates.

A roll mount device for a vehicle includes: a front mount configured to be connected to a power train; a rear mount configured to be connected to a vehicle body; and a rod disposed between the front mount and the rear mount. The front mount comprises: a core configured to be connected to the power train to receive vibration transmitted from the power train; an outer pipe disposed outside the core and spaced from the core by a predetermined distance with respect to a radial direction of the core; an elastic body disposed between the core and the outer pipe to absorb vibration transmitted thereto from the core; and a stopper disposed on an outer surface of the core to be spaced from an inner surface of the outer pipe by a predetermined distance.

A tilger for a rotating body includes an annular body movably coupled to a rotatable portion of the rotating body. The tilger includes a spring interposed between the first annular body and the rotatable portion. Rotation of the rotatable portion relative to the annular body is to compress and decompress the spring. The tilger includes a ring positioned on an outer surface of the annular body and configured to expand as a rotational speed of the ring increases to decrease a total inertia of the annular body and the ring applied to the spring.

A rebound bumper for a shock absorber includes a first portion formed from a first material having a first spring rate and a second portion coupled to the first portion and formed from a second material having a second spring rate greater than the first spring rate. The first portion and the second portion are configured to fit on a piston rod between a piston and a rod guide assembly of the shock absorber. Also, the rebound bumper exhibits a displacement under load relationship with the first spring rate, the second spring rate, and a third spring rate greater than the first spring rate and less than the second spring rate.

Systems, apparatus, and methods provide a material, comprising a first section including a first plurality of geometric elements associated with a first characteristic, the first section having a first set of mechanical properties; a second section including a second plurality of geometric elements associated with a second characteristic, the second section having a second set of mechanical properties different from the first set of mechanical properties; and a third section including a third plurality of geometric elements having a change in configuration that provides a transition from the first characteristic to the second characteristic.