METHOD FOR INFLUENCING, DAMPING, OR SUPPRESSING MECHANICAL VIBRATIONS OCCURRING DURING OPERATION IN A TURBOMACHINE BLADE, A TURBOMACHINE BLADE USEFUL FOR CARRYING OUT THE METHOD, AND A PIEZOELECTRIC DAMPING ELEMENT
First Claim
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1. A method for suppressing mechanical vibrations occurring during operation in a turbomachine blade, the method comprising:
- converting mechanical vibratory energy of the turbomachine blade into electrical energy; and
piezoelectrically converting said electrical energy into heat loss.
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Abstract
In a method for influencing, in particular damping or suppressing, mechanical vibrations occurring during operation in a turbomachine blade (10), the mechanical vibratory energy of the turbomachine blade (10) is first converted into electrical energy and the electrical energy generated is then converted into heat loss. Effective damping which can be used especially simply and in a versatile way is achieved in that the piezoelectric effect is used in order to convert mechanical vibratory energy into electrical energy.
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Citations
29 Claims
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1. A method for suppressing mechanical vibrations occurring during operation in a turbomachine blade, the method comprising:
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converting mechanical vibratory energy of the turbomachine blade into electrical energy; and piezoelectrically converting said electrical energy into heat loss. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A turbomachine blade comprising:
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a blade leaf; and at least one piezoelectric damping element installed firmly in the blade leaf. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A piezoelectric damping element useful for installation in a turbomachine blade, the piezoelectric damping element comprising:
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a piezo element; and an electrical network connected to the piezo element. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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Specification