Finite element modelling of high speed rotating pretwisted blades

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a linear finite element model formulation that incorporates the effects of rotary inertia, tip-mass, maneuver speed, the blade pitch angle, and the hub tilting on dynamic responses of high-speed rotating blade experiencing a spin-up maneuver operation. To make the system realistic, a linear finite element beam model is derived by using the Hamilton and variational formulation. The proposed finite element approach enables the study of the maneuver dynamics at various spin-up operations. A state space transformation is employed to convert the dynamic equations into a state space model for dynamic response analysis. Numerical experiments are performed to study the dynamic characteristics of the structure contributed by rotary inertia, tip-mass, maneuver speed, the blade pitch angle and the hub tilting. The dynamics of the rotating blade at different flight conditions are studied and reported. The inadequacy of linear finite element formulation is discussed. A further study by using nonlinear finite element formulation is suggested.

Original languageEnglish
Title of host publicationProceedings of the 14th IASTED International Conference on Applied Simulation and Modelling
EditorsM.H. Hamza
Pages416-421
Number of pages6
Publication statusPublished - 2005
EventProceedings of the 14th IASTED International Conference on Applied Simulation and Modelling - Benalmadena, Spain
Duration: 2005 Jun 152005 Jun 17

Other

OtherProceedings of the 14th IASTED International Conference on Applied Simulation and Modelling
CountrySpain
CityBenalmadena
Period05-06-1505-06-17

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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