A new multibody modelling methodology for wind turbine structures using a cardanic joint beam element

This paper presents a new multibody modelling methodology for wind turbine structures. The methodology is based on the hybrid multibody system being composed of rigid, flexible bodies, force elements and joints. With a cardanic joint beam element based on the Timoshenko beam theory, the flexible bod...

Full description

Saved in:
Bibliographic Details
Published in:Renewable energy 2007-03, Vol.32 (3), p.532-546
Main Authors: Zhao, Xueyong, Maißer, Peter, Wu, Jingyan
Format: Article
Language:English
Subjects:
Applied sciences
Cardanic joint beam
Energy
Exact sciences and technology
hybrids
Modal analysis
Multibody system
Natural energy
Q1
Renewable energy
Vibration
Water springs
Wind energy
Wind turbine
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper presents a new multibody modelling methodology for wind turbine structures. The methodology is based on the hybrid multibody system being composed of rigid, flexible bodies, force elements and joints. With a cardanic joint beam element based on the Timoshenko beam theory, the flexible bodies, e.g. rotor blades and tower, shafts, are modelled by a set of rigid bodies connected by cardanic joints geometrically and constrained by spring forces elastically, thus a whole wind turbine structure can be represented by a discrete system of rigid bodies, springs, and dampers. Using some concepts of the differential geometry, the Lagrange's motion equations of the multibody system are represented in explicit form. With this model, the global natural vibrations of a wind turbine structure of 600 kW are analysed.
ISSN:0960-1481
1879-0682
DOI:10.1016/j.renene.2006.04.010