摘要:
An elastomeric mounting of the type comprising a plurality of elastomeric layers 21 having a plurality of reinforcement layers 20 interleaved between and bonded to the elastomeric layers 21. The reinforcement layers 20 are of corrugated profile each comprising a plurality of alternate peaks 22 and valleys 23 whereby a more even distribution of the stress concentrations generated in use of the mounting, e.g. in a vehicle axle suspension, is obtained. The reinforcement layers 20 may all be of the same size and shape such that a compact mounting is obtained which occupies a smaller space envelope then a comparable chevron spring.
摘要:
The buckling strength of a laminated rubber (1) is increased to fully make use of the deformation ability of a hollow laminated rubber either by making the inside and/or the outside of the hollow laminated rubber of non-uniform section in a vertical direction so that the width in a horizontal section may be gradually enlarged from the vertical central portion to both vertical ends or by forming a plurality of projections (5) in a vertical direction on the inside and/or the outside, the laminated rubber may be used as a spring element in an active or passive vibration control device or as a supporting device, resulting in the construction of a vibration control device suitable for a structure having a long natural period such as a multi-storey building.
摘要:
A vibration damping device for a structure 1 includes a circular tubular member 3 having a circular tubular inner peripheral surface 2; a columnar elongated member 6 which is disposed in the circular tubular member 3 relatively movably in a direction X with respect to the circular tubular member 3 and having a circular tubular outer peripheral surface 5; and a circular tubular elastic member 10 which has a circular tubular member outer peripheral surface 8 fixed to the inner peripheral surface 2 of the circular tubular member 3 and a circular tubular member inner peripheral surface 9 fixed to the circular tubular outer peripheral surface 5 of the elongated member 6, and which is disposed between the inner peripheral surface 2 of the circular tubular member 3 and the outer peripheral surface 5 of the elongated member 6.
摘要:
The centrifugal force bearing (301) includes a plurality of tapered metal shims (305) such that the thicker end of each tapered metal shim (305) is near the inner portion of bearing. The bearing (301) can include a plurality of tapered elastomeric members (303) that are consequently tapered so that the inner portions are narrower than the outer portions. The tapered metal shims (305) can increase the axial stiffness in the direction (307) of the centrifugal force, thereby reducing the axial deflection under loading, as compared to non- tapered shims. Further, reducing axial deflection reduces clearance issues that may arise when the rotor blade (123) is allowed to axial deflect significant distances. As such, the tapered metal shims (305) can increase the capacity of the bearing. Tapering the metal shims can decrease the compression induced shear strain near the outer portions of the elastomeric member (303), where loads are typically higher.