3D Finite Element Modeling and Vibration Analysis of Gas Turbine Structural Elements.pdf
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This paper is dedicated to the topical problem of vibration reliability of gas turbine units. One of the mosturgent problems during design and manufacturing of gas turbine units is the provision of reliability anddurability of unit’s joints by development and application of perspective turbomachines constructions withapplication of up-to-date CAD/CAE/CAM-technologies. This paper is devoted to finite element analysis ofrotors and casings vibration analysis for various gas turbine units.In the present paper natural frequencies of the gas turbine unit rotor with varying bearings stiffness areanalyzed for axisymmetrical model. Transient process of rotor vibrations after 4-th cascade bladebreakaway is also analyzed. Finite element modeling and analysis of natural frequencies of full-scale gasturbine turbocompressors models and power turbine spatial model is carried out.
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