Abstract: A mechanical connection for providing desirable stiffness and damping of mechanical energy. The connection includes at least one frusto-conical annular disc element having a radial discontinuity extending from inner to outer peripheral edges, and a visco-elastomeric matrix on at least one annular face thereof. The cross sectional configuration of the element enables it to undergo axial displacement due to flexure of the disc as the matrix simultaneously undergoes shearing strains in generally tangential and radial directions.

Abstract: A flexurally, axially and transversely stiff link for providing a connection of low torsional stiffness between structural elements. The link includes an elongate flexurally stiff tapered beam extending longitudinally inside a filament-wound composite tube of low torsional stiffness and an elastomeric bearing interposed between the small end of the beam and the tube. An inboard connector assembly connects the beam and tube to one of the structural elements, and an outboard connector assembly connects the tube to the other structural element. Tensile loads are carried by the tube; however, when torque is applied, the elastomeric material permits the tube to twist relative to the beam while enabling shear loads to be transferred therebetween. Modified embodiments of links having enhanced flexural and tensile load carrying capabilities are disclosed.

Abstract: Flexurally stiff members having low torsional stiffness, high transverse shear resistance and high stability are disclosed. In several embodiments, each member includes a flexurally and torsionally stiff tapered elongate beam surrounded by an outer tube-like component of lower torsional stiffness and interconnected by an elastomeric medium which enables the tube-like component to twist relative to the beam while permitting some of the flexural and transverse loads applied to the tube-like component to be transferred to the beam. In several embodiments, the tube-like component includes a pair of interarranged corrugated open section members engaged by one or more stabilizers, including a shrunk fit tube of elastomeric material extending lengthwise between attachment fittings at opposite ends. End fittings for applying various loads to the members are also disclosed.

Abstract: A structural element which is particularly suited for use in accommodating torsional displacement while carrying various axial, transverse, and flexural loads. The structural element is of a multi-component construction which includes at least one elongated tube-like thin wall member having a pair of longitudinally-extending edges. The wall member is laterally engaged and constrained by one or more stabilizers which permit yielding relative motion between the edges when torque is applied.

Abstract: A structural element capable of resilient twisting about an axis including a plurality of axially extending open section members of decreasing transverse dimension nested together with adjacent ends of the members being rigidly interconnected at each end of the element.