A mechanical assembly for a vehicle (10), in particular a motor vehicle, comprises a rotating element (18), a support Got (20) for the rotating element (18), and a cover (22) attached on the support (20) for the rotating element (18). The cover (22) has at least one edge (50) attached on the support (20) for the rotating element (18) and a bottom (52) extending substantially in a plane. The N bottom (52) is at least partially covered by elastomer material (58).

An automotive crashworthiness energy absorptive part absorbs crashworthiness energy by crushing axially when a crashworthiness load is input from a front side or a rear side of an automotive body, and includes: a tubular member formed of a steel sheet with a tensile strength of 590 MPa to 1180 MPa, the tubular member including a top portion and a pair of side wall portions continuous from both ends of the top portion via corner portions; a closed cross section space forming wall member formed of a steel sheet with a tensile strength lower than the tubular member, the closed cross section space forming wall member being disposed on an inner surface side of the tubular member and forming a closed cross section space between the closed cross section space forming wall member and at least the corner portion; and a resin provided in the closed cross section space.

A damper for damping vibrations of a structure comprises: a first damping unit, comprising a first damping body having a first mass (m.sub.1), a first spring element having a first spring constant (k.sub.1) and a first damping element having a first damping constant (c.sub.1), wherein said first damping body is configured to be attached to said structure via said first spring element and said first damping element; and a second damping unit, comprising a second damping body having a second mass (m.sub.2), a second spring element having a second spring constant (k.sub.2) and a second damping element having a second damping constant (c.sub.2), wherein said second damping body is configured to be attached to said first damping body via said second spring element and said second damping element.

A diaphragm holder for an oleo-pneumatic-type shock absorber includes a tubular body made of thermoplastic material, having a first end arranged to hold a diaphragm provided with flow restricting orifices and an opposite second end defining an arched bottom for withstanding pressure forces. Each of the two ends is provided with a localised mechanical reinforcement element forming an axial stop arranged to allow tensile stressing of the tubular body.

An aluminum alloy according to the present invention includes 1.2% by mass to 4.0% by mass of copper, 4.0% by mass to 14.0% by mass of zinc, 0.5% by mass to 4.0% by mass of magnesium, 0.01% or less of silicon, and 0.01% or less of iron, with the balance containing aluminum and inevitable impurities, and has an average equivalent circle crystal grain size of 500 nm or less.

Various embodiments provide a bush for isolating vibrations, the bush comprising: a first anchor part defining a longitudinal axis; a second anchor part disposed coaxially with respect to the first anchor part; a first resilient body operably engaged with the first anchor part; a second resilient body operably engaged with the second anchor part; and an inertial mass element disposed between the first anchor part and the second anchor part. The inertial mass element is independently connected to the first resilient body and the second resilient body. Also, the first resilient body, second resilient body and inertial mass element are arranged to isolate vibrations between the first anchor part and the second anchor part within a predetermined operational frequency range. Further, the inertial mass element is arranged to isolate the first anchor part and second anchor part from dynamic stiffness increases associated with eigenmodes of the first resilient body and the second resilient body in the predetermined operational frequency range.

A block copolymer including a polymer block (A) containing more than 70 mol % of a unit derived from an aromatic vinyl compound, and a polymer block (B) containing 30 mol % or more of a unit derived from a conjugated diene compound is provided. The block copolymer satisfies the conditions: (1): a content of the polymer block (A) in the block copolymer is 1 to 70% by mass; (2): a maximum width of a series of temperature regions where tan δ measured in accordance with JIS K7244-10 (2005), under conditions including a strain amount of 0.1%, a frequency of 1 a measurement temperature of −70 to 100° C., and a temperature rise rate of 3° C./min, is 1.0 or more is less than 16° C.; (3): a temperature at a peak position of tan δ in the condition (2) is 0° C. to +50° C.; and (4): a mobility parameter M indicating a mobility of the polymer block (B) is 0.01 to 0.25 sec.

A shock absorbing member which can increase impact absorption energy and also enables thinning of a steel sheet that is a starting material, a method for producing the shock absorbing member, and a method for producing a steel sheet for cold plastic working are provided. The shock absorbing member includes a ridge portion formed in a curved shape as viewed from a longitudinal direction, and a wall portion extending from the ridge portion. In the wall portion, a ratio σ.sub.5/τ.sub.5 between a tensile stress σ.sub.5 when an elongation in a tensile test is 5% and a shear stress τ.sub.5 when a shear strain in a shear test is 5√3% is 1.70 or less, or a ratio σ.sub.10/τ.sub.10 between a tensile stress σ.sub.10 when an elongation in a tensile test is 10% and a shear stress τ.sub.10 when a shear strain in a shear test is 10√3% is 1.70 or less.

In at least some implementations, an energy absorbing member for a vehicle includes an engine cover adapted to be mounted beneath a vehicle hood and to overlie at least part of an engine, and an upper member coupled to the engine cover. The upper member is cantilevered to the engine cover wherein the upper member has a base coupled to the engine cover and a free end spaced from the base, and the upper member is flexible and a first portion of the upper member spaced from the base and including the free end is movable relative to the base.

An energy absorber for interposition between a cover and a covered object includes a generally planar matrix of cells. Each of the cells includes a plurality of generally elongate micro-elements interconnected to form a cell micro-structure, with each cell having a respective energy absorption capacity such that an energy absorption capacity of the energy absorber varies across at least one direction. The cells are configured such that impulse of an object with the cover with the energy absorber sandwiched between the cover and the covered object causes a deceleration vs. time response in the object, beginning with a generally linear rise in the deceleration to a peak deceleration within 5 ms after the beginning of the impulse event, followed by a generally nonlinear decrease in the deceleration over a period of not greater than 15 ms to a final target deceleration of not greater than 10% of the peak deceleration.