Abstract:
A floor mounting system including an array of variable stiffness supports disposed between and coupled to a base structure and a floor member, and a control system conductively coupled to each variable stiffness support for selectively varying the stiffness of each variable stiffness support is disclosed. Each variable stiffness support has a support housing that is configured to adjust the orientation of an internal elastomer assembly. The support housing includes an adjustment mechanism, and the elastomer assembly includes an outer ring that encircles an elastomeric material, a central bushing embedded in the elastomeric material, and a plurality of shims embedded in the elastomeric material in a parallel plane.
Abstract:
A variable stiffness support (111) has a support housing (113) that is configured to adjust the orientation of an internal elastomer assembly (115) . The support housing (113) includes an adjustment mechanism (117), and the elastomer assembly (115) includes an outer ring (151) that encircles the elastomeric material (115), a central bushing (155) embedded in the elastomeric material (115), and a plurality of shims (159) embedded in the elastomeric material (115) in a parallel planar fashion.
Abstract:
A tunable vibration isolator (451, 551, 651, 681, 691, 721, 801, 901, 973) with active tuning elements (473, 475, 573, 673, 675, 689, 705, 707, 745, 74 7, 747, 819a, 819b) having a housing which defines fluid chambers. A piston (45 5, 555, 655, 695, 725, 805, 970) is disposed within the housing. A vibration isolation fluid is disposed within the fluid chambers. A passage (463, 563, 663, 735, 881, 904) having a predetermined diameter extends through the pist on to permit the vibration isolation fluid to flow from one fluid chamber to th e other. The tunable vibration isolator may employ either a solid tuning mass approach or a liquid tuning mass approach. In either case, active tuning elements, or actuators, are disposed in the fluid chambers to selectively tu ne the vibration isolator.
Abstract:
A variable stiffness support (111) has a support housing (113) that is configured to adjust the orientation of an internal elastomer assembly (115). The support housing (113) includes an adjustment mechanism (117), and the elastomer assembly (115) includes an outer ring (151) that encircles the elastomeric material (115), a central bushing (155) embedded in the elastomeric material (115), and a plurality of shims (159) embedded in the elastomeric material (115) in a parallel planar fashion.
Abstract:
A tunable vibration isolator (451, 551, 651, 681, 691, 721, 801, 901, 973) with active tuning elements (473, 475, 573, 673, 675, 689, 705, 707, 745, 747, 747, 819a, 819b) having a housing which defines fluid chambers. A piston (455, 555, 655, 695, 725, 805, 970) is disposed within the housing. A vibration isolation fluid is disposed within the fluid chambers. A passage (463, 563, 663, 735, 881, 904) having a predetermined diameter extends through the piston to permit the vibration isolation fluid to flow from one fluid chamber to the other. The tunable vibration isolator may employ either a solid tuning mass approach or a liquid tuning mass approach. In either case, active tuning elements, or actuators, are disposed in the fluid chambers to selectively tune the vibration isolator.
Abstract:
A vibration isolator comprising: a piston (1605) resiliently disposed within a housing (1603) with a first set of seals (1607); a mount plate (1609) configured for attachment to a vibrating body, the piston being connected to the mount plate; an upper fluid chamber (1611) and a lower fluid chamber (1613), each being defined by the housing, the piston, and the first set of seals; a tuning port (1620) for fluid communication between the upper fluid chamber and the lower fluid chamber; a tuning fluid disposed within the upper fluid chamber, the lower fluid chamber, and the tuning port; and a piezo piston (1619) resiliently disposed with the housing, the piezo piston being configured to be driven by at least two piezoceramic actuators (1623).