Communication Dans Un Congrès Année : 2016

Nonlinear Cyclic Transient Dynamic Analysis for Bladed Disk Tip Deflection

Résumé

High aspect ratio rotating structures such as fan blade and first stage compressor blades have the potential to undergo large dynamic deflections under unsteady aerodynamic excitation. The presence of nonlinear geometric effects in the vibratory response limits the use of traditional cyclic symmetry in linear harmonic forced response analyses. In this paper a methodology is developed to calculate the nonlinear dynamic response of cyclic structures undergoing large vibratory deformation under a traveling wave excitation using a double-sector model and transient dynamic analysis. It is shown that the results from the double-sector model are in good agreement with the results obtained from a full wheel nonlinear transient dynamic analysis when nonlinear geometric effects are concentrated near the blade tip away from the sector edges where cyclic constraint equations are enforced. The quality of agreement gradually degrades as the amount of nonlinear geometric effects near the cyclic sector boundaries increase.

Fichier principal
Vignette du fichier
144Final_Nonlinear_Cyclic_Transient_Dynamic_Analysis_for_Bladed.pdf (1.12 Mo) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)
Licence
Loading...

Dates et versions

hal-01516498 , version 1 (01-05-2017)

Licence

Identifiants

  • HAL Id : hal-01516498 , version 1

Citer

Tong Hui, Letian Wang, Suryarghya Chakrabarti, Siddharth Ashar, Steven Szczap, et al.. Nonlinear Cyclic Transient Dynamic Analysis for Bladed Disk Tip Deflection. 16th International Symposium on Transport Phenomena and Dynamics of Rotating Machinery (ISROMAC 2016), Apr 2016, Honolulu, United States. ⟨hal-01516498⟩

Collections

149 Consultations
282 Téléchargements

Partager

  • More