摘要:
A stabilizer bar or stabilizer link in fiber composite construction is of a monolithic construction without fiber interruption. The cross section geometry, the wall thickness, and the fiber orientation vary in axial direction and radial direction such that the requirements defined by the available construction space and the expected loads are fulfilled. The fiber orientation is adjusted axially and radially load-appropriately. The middle section of the stabilizer bar that is primarily torsion-loaded is reinforced with fibers oriented between +/−35° and +/−55° relative to the longitudinal axis and the end members that are primarily bending-loaded are reinforced with fibers oriented between +/−20° and +/−40° relative to the longitudinal axis. In the transitional areas between the middle section and the end members there are transitions between these fiber orientations relatively to the longitudinal axis.
摘要:
A leaf spring for a vehicle suspension is formed from a composite material and includes first and second ends that are longitudinally spaced apart from each other. A resilient element is attached to at least one of the first and second ends. The resilient element includes at least one hole that receives a connecting element. The resilient element and the connecting element cooperate to attach the leaf spring to a vehicle structure. In one example, the resilient element comprises a rubber block that is bonded to the leaf spring. In another example, the resilient element comprises a longitudinally orientated bushing that is inserted through a thickness of the leaf spring.
摘要:
A composite material is provided that includes a matrix material, and a plurality of deflectable elements or “machines” disposed in the matrix material, the machines acting to modify one or more physical properties of the composite material in response to forces acting upon the composite material. Preferably, the machines have an elongate shape defining a longitudinal axis, which are disposed within the matrix material in a predetermined array. The elongate members have an asymmetrical cross-section which is deflectable between first and second shapes, and consequently the composite material exhibits different physical properties because the elongate members deflect between the first and second shapes. The machines may include a variety of asymmetrical cross-sections, such as a generally “Z” shape, an hourglass shape, a cantilever shape or a leaf spring shape.
摘要:
A composite torsional vibration damper is disclosed. The torsional vibration damper has a first central hub region and a plurality of radially disposed composite arms. A cylindrical mass is coupled to and annularly disposed about the composite arms. The composite arms are tuned to form composite springs having specific radial stiffness and damping properties.
摘要:
Provided is a composite spring assembly configured to provide non-linear stiffness in response to a load. The spring assembly comprises a body portion and a reinforcing element. The body portion defines a longitudinal axis along which the load may be placed. The reinforcing element is embedded in the body portion and is oriented in general disalignment with the longitudinal axis such that deformation of the body portion under the load causes the reinforcing element to move toward alignment with the load direction. The spring assembly may be provided as a prosthetic spine disc wherein the body portion is cylindrically shaped and has an outer wall and planar opposed body end faces. The reinforcing elements are cylindrically shaped and coaxially disposed relative to one another and to the outer wall. The spring assembly may be configured as an elongate tension band with the reinforcing element being configured as a continuous loop of material arranged in a double bowtie configuration.
摘要:
A stress-bearing assembly is for use in a vehicle body. The assembly includes a composite laminate resin-cured structure comprising at least a pair of oriented fiber mats separated by a layer of foamed plastic and at least one closed loop structure attached to the composite structure. The mats preferably comprise glass fibers, carbon fibers or fabric material, and the composite structure preferably constitutes the floor structure of a vehicle.
摘要:
A helical spring is formed by winding a fiber bundle onto a core at a predetermined wind angle and then winding the wound core onto a grooved mold. The fibers have a thermosetting material thereon which is cured as the wound core advances along the groove by heating of the mold, the mold rotated to achieve this advance. A frictional engagement at the delivery end is set up between the wound core and the groove to pull and stretch the wound core and to thereby optimally orient the fibers before setting.
摘要:
An impact absorption member comprises a sheet of crushable material having curvilinear projections having a width, height, length and spacing selected for different impact absorption characteristics. In a preferred embodiment of the invention, the projections are sinusoidal. In a preferred embodiment also, the material comprises a mixture of recycled, reground thermo-formable material and reprocessed fibrous bats including polyester fibers, glass fibers and a thermo-setting resin. In the preferred embodiment of the invention, the member constitutes an elongated arch-shaped base having integrally superimposed thereon the curvilinear projections.
摘要:
An interface (3) for vibration reduction in structural-dynamic systems comprises a base-side construction element (8) and a structure-side construction element (9) and at least one actuator (14), for example a piezoelectric or a magnetostrictive actuator. The actuator (14) has a main direction (17), and the extension of the actuator (14) in its main direction (17) between a first engagement point (15) on the base-side construction element (8) and a second engagement point (16) on the structure-side construction element (9) can be voluntarily changed by means of a drive signal. Therein, the actuator (14) is under pressure prestress between the first engagement point (15) and the second engagement point (16), and at least one elastic element (18) is arranged in parallel to the actuator (14) between the base-side construction element (8) and the structure-side construction element (9), the elastic element (18) having a longitudinal stiffness parallel to the main direction (17) of the actuator (14) which is as low as possible, and a transversal stiffness perpendicular to the main direction (17) of the actuator (14) which is as high as possible.
摘要:
A vibration damping composition is provided which is made from a combination of a resin capable of being molded into a desired shape, an aggregate capable of reducing the amount of resin needed in a given volume, a structural fiber capable of increasing the strength of the composition and increasing the acoustical characteristics of the composition, and a filler material which reduces the amount of resin needed in a given volume. The resin binds the aggregate, the structural fiber and the filler material into a moldable material that, upon hardening, serves to damp vibrations.