A parametric study is developed to investigate the effect of geometry, material stiffness and the rotational motion on the coupled flapwise bending and torsional vibration modes of a wind turbine blade. The assumed modes method is used to discretize the derived kinetic and potential energy terms. Lagrange’s equations are used to derive the modal equations from the discretized terms, which are solved for the vibration frequencies. The parametric study utilizes dimensional analysis techniques to study the collective influence of the investigated parameters by combining them into few non-dimensional parameters, thus providing deeper insight to the physics of the dynamic response. Results would be useful in providing rules and guidelines to be used in blade design.
A Study on Coupled Bending and Torsional Vibrations of Wind Turbine Blades
2012
7 Seiten
Conference paper
English
Coupled torsional and bending vibrations of actively controlled drillstrings
Online Contents | 2000
|Coupled bending, longitudinal and torsional vibrations of a cracked rotor
Online Contents | 2004
|Actuator control of edgewise vibrations in wind turbine blades
Online Contents | 2012
|Coupling of airplane propeller bending vibrations with crankshaft torsional vibrations
Engineering Index Backfile | 1938
|