초록 ▼

Undesirable vibrations are controlled in a mechanical structure by confining the vibrations to one or more specified areas of the structure and then dissipating the confined energy by damping. Vibration confinement is achieved using a confinement device which effectively applies both translational a

Undesirable vibrations are controlled in a mechanical structure by confining the vibrations to one or more specified areas of the structure and then dissipating the confined energy by damping. Vibration confinement is achieved using a confinement device which effectively applies both translational and torsional forces to the structure. The strength of the translational and torsional forces, and the position of the confinement device are chosen to select a vibrational energy confinement region. Damping elements are concentrated in the vibration confinement region to dissipate the confined vibrational energy. Judicious selection of the confinement region permits the structure to avoid the transfer of vibrational energy to particularly sensitive portions of the structure, or to direct vibrational energy to a portion of the structure. Optimization procedures are presented for designing structures having optimized placement and selection of the vibration confinement device and damping devices.

대표청구항 ▼

[ I claim:] [1.] A method for reducing vibrational energy in a structure having a vibrating member using a vibration confinement device and a vibration damping element, the vibrating member having boundaries and vibrating relative to the boundaries, the method comprising:selecting a vibration confin

[ I claim:] [1.] A method for reducing vibrational energy in a structure having a vibrating member using a vibration confinement device and a vibration damping element, the vibrating member having boundaries and vibrating relative to the boundaries, the method comprising:selecting a vibration confinement region in the vibrating member relative to the boundaries;determining an effective torsional stiffness and an effective translational stiffness for the vibration confinement device;determining an operating position relative to the boundaries for the vibration confinement device on the vibrating member to define a determined position;determining a damping position for the damping element on the vibrating member, within the vibration confinement region;positioning the vibration confinement device at the determined position, thereby confining vibrational energy to the vibration confinement region;positioning the damping element at the damping position of the vibrating member; anddissipating the vibrational energy from the vibration confinement region by the vibration damping element,wherein the vibration damping device is an active vibration damping device.