Invention Grant
- Patent Title: Piezoelectric damping rings
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Application No.: US14845478Application Date: 2015-09-04
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Publication No.: US10557352B2Publication Date: 2020-02-11
- Inventor: Roy D. Fulayter , Daniel Hoyniak
- Applicant: Rolls-Royce Corporation
- Applicant Address: US IN Indianapolis
- Assignee: Rolls-Royce Corporation
- Current Assignee: Rolls-Royce Corporation
- Current Assignee Address: US IN Indianapolis
- Agency: Barnes & Thornburg LLP
- Main IPC: F01D5/10
- IPC: F01D5/10 ; F01D5/12 ; G10K11/00

Abstract:
A blisk assembly for vibration dampening includes a disk portion extending circumferentially about a central axis of the blisk, a plurality of blades integrally coupled to the disk, and a piezoelectric damping ring that includes a damping ring and a plurality of piezoelectric elements coupled to the damping ring. The disk portion includes a groove configured to receive the piezoelectric damping ring. As a result of centrifugal forces applied to the piezoelectric damping ring during rotation of the blisk assembly, mechanical energy may be generated at one or more of the plurality of piezoelectric elements, which is converted to electrical energy and transmitted to another one or more of the plurality of piezoelectric elements. Accordingly, the one or more of the piezoelectric elements having received the electricity can convert the electricity to mechanical energy to provide vibration damping.
Public/Granted literature
- US20160194961A1 PIEZOELECTRIC DAMPING RINGS Public/Granted day:2016-07-07
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