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Dynamic Characteristics Study of Low-pressure Compressor Rotor of Gas Turbine

Huazhi Li

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Abstract

On the basis of the solid model,a finite element model is established by Hypermesh for the low compressor rotor of a gas turbine.The critical speed and harmonic response of the rotor are calculated using ANSYS.The result shows rotor is good in stiffness.The safety factor of the first critical speed of the rotor is reasonable.Special attention should be paid to the strength of rotor adjacent to the 4th stage of the compressor.

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What this paper is about

On the basis of the solid model,a finite element model is established by Hypermesh for the low compressor rotor of a gas turbine.The critical speed and harmonic response of the rotor are calculated using ANSYS.The result shows rotor is good in stiffness.The safety factor of the first critical speed of the rotor is reasonable.Special attention should be paid to the strength of rotor adjacent to the 4th stage of the compressor.

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Available abstract

On the basis of the solid model,a finite element model is established by Hypermesh for the low compressor rotor of a gas turbine.The critical speed and harmonic response of the rotor are calculated using ANSYS.The result shows rotor is good in stiffness.The safety factor of the first critical speed of the rotor is reasonable.Special attention should be paid to the strength of rotor adjacent to the 4th stage of the compressor.

Key concepts: Gas compressor, Rotor (electric), Critical speed, Degree of reaction, Finite element method, Turbine, Structural engineering, Engineering

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