Method for determining an unbalance of a shaft-elastic rotor with reference to the outward deflection

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United States of America Patent

PATENT NO 11060941
SERIAL NO

16445884

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Abstract

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In a method for determining an equivalent modal unbalance for the first bending characteristic form of a shaft-elastic rotor, which unbalance is to be compensated for, a rotor model is created describing the geometric shape and material properties of the shaft-elastic rotor. The magnitude of compliance of the rotor model is calculated at a measurement point and at the center of gravity of the rotor at an assumed speed. The shaft-elastic rotor is received in a rotatable bearing and accelerated to the assumed speed which is below its first critical speed. Subsequently, the magnitude of outward deflection at the measurement point of the shaft-elastic rotor rotating at the assumed speed can be measured. The equivalent modal unbalance for the first bending characteristic form of the shaft-elastic rotor, which unbalance is to be compensated for, can be calculated from the magnitudes of the calculated compliance and the measured outward deflection.

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Patent Owner(s)

Patent OwnerAddress
SCHENCK ROTEC GMBH64293 DARMSTADT

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hartnagel, Matthias Bensheim, DE 4 1
Wanke, Thomas Gross-Umstadt, DE 9 30

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