Nonlinear finite element analysis of a pretwisted rotating blade subjected to aerodynamic loads

Steven Hsin-Yi Lai, Chuh Jung Chen

Research output: Contribution to journalArticle

Abstract

This paper investigates the effect of rotary inertia, tip-mass, maneuver speed, the blade pitch angle, and the hub tilting angles on the dynamic responses of a cantilever rotating rectangular blade experiencing a spin-up maneuver operation. To make the system realistic, a geometrically-exact finite element beam model is derived using the Hamilton and variational formulation. The finite element approach enables the study of the maneuver dynamics of different spin-up operations. The state space transformation is used to transform the dynamic equations into the state space model for system 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 and the hub tilting angles. The dynamics of the rotating blade at different flight conditions are studied and reported.

Original languageEnglish
Pages (from-to)299-312
Number of pages14
JournalJournal of the Chinese Society of Mechanical Engineers, Transactions of the Chinese Institute of Engineers, Series C/Chung-Kuo Chi Hsueh Kung Ch'eng Hsuebo Pao
Volume25
Issue number4
Publication statusPublished - 2004 Aug

All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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