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

Elmeiche, Abbes

 
9786207460816: Advanced Rotor Dynamics of Functionally Graded Materials: A Finite ElementApproach for Critical Speed and Stability Optimization
Couverture souple
ISBN 10 : 6207460812 ISBN 13 : 9786207460816
Editeur : LAP LAMBERT Academic Publishing, 2025

Synopsis

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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Éditeur
LAP LAMBERT Academic Publishing
Date d'édition
2025
Langue
anglais
ISBN 10 
6207460812
ISBN 13 
9786207460816
Reliure
Broché
Nombre de pages
52
Coordonnées du fabricant
non disponible
Personne responsable
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