Method for Spatially Confining Vibrational Energy
DEPARTMENT OF THE NAVY WASHINGTON DC WASHINGTON DC United States
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There is a need for a technique for computing isolating active vibration that only requires an actuator for each support. It is also desirable to have a technique for isolating broadband vibration from a specified region between the source and the end of a beam. The present invention is directed to a method to confine vibrational energy within a physical structure and more particularly to a method to confine vibrational energy to a beam having various end conditions. The principal advantage is the ability to confine vibrational energy to any region on a beam by introducing two source terms whose values are calculated by this approach. This can be useful in sonar and other acoustic applications to isolate and remove self-noise due to machinery and other sources. Although the example here focused on beam vibration, this approach will work on any system that leads to a banded coefficient matrix.
- Operations Research