Advanced Rotor Dynamics of Functionally Graded Materials: A Finite ElementApproach for Critical Speed and Stability Optimization - Softcover

Elmeiche, Abbes

Softcover

ISBN 10: 6207460812 ISBN 13: 9786207460816

Verlag: LAP LAMBERT Academic Publishing, 2025

Inhaltsangabe

This study explores the dynamics of functionally graded material (FGM) rotors using a finite element approach based on Timoshenko beam theory. The FGM rotor, composed of SUS304/silicon nitride, is analyzed for critical speeds and stability, incorporating gyroscopic effects, rotary inertia, and shear deformation. Results show that material gradation (power-law index k) significantly impacts natural frequencies, with ceramic-rich compositions achieving up to 15% higher critical speeds. Campbell diagrams reveal forward and backward whirl modes, identifying critical speeds at 1460 rpm, 1980 rpm, and 2650 rpm. The study highlights the inverse relationship between slenderness ratio (L/d) and natural frequencies, stabilizing beyond L/d>10. Validated with benchmark solutions (±2%), the model proves effective for FGM rotor design in high-performance turbomachinery.

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Über die Autorin bzw. den Autor

Dr. Abbes ELMEICHE is a lecturer and researcher at the University of Technology, with extensive experience in supervising and contributing to development projects in engineering. His work focuses on structural dynamics and mathematical modeling, bridging theoretical foundations with practical applications in mechanical and civil engineering.

Details zur Ausgabe

• Verlag: LAP LAMBERT Academic Publishing
• Erscheinungsdatum: 2025
• Sprache: Englisch
• ISBN 10: 6207460812
• ISBN 13: 9786207460816
• Einband: Taschenbuch
• Anzahl der Seiten: 52
• Kontakt zum Hersteller: Editions Vie; customerservice@vdm-vsg.de; ; Brivibas gatve 197; Riga; 1039; Lettland