Buckling behavior of rotor blade sandwich panels with spatially distributed material uncertainties

authored by

Felix Prigge, Claudio Balzani

Abstract

The study evaluates the impact of material uncertainties on the buckling behavior of sandwich panels in wind turbine rotor blades. The analysis is limited to linear buckling and is performed using stochastic finite element Monte Carlo simulation on a rectangular and flat submodel of the rotor blade's trailing edge panel. The finite element model of the panels is simply supported on all edges. To generate the spatial material property distributions, the Karhunen-Loève expansion is used in combination with Latin hypercube sampling. The results compare the effects of various correlation lengths of the spatial distributions. The buckling loads vary in correlation to the average panel stiffness caused by the random distributions. The spatial distribution has a less dominant effect, reducing the mean value of the buckling load results. The amount of reduction in buckling load is highest when the correlation length of the distribution is close to the harmonic half-wave of the dominant buckling shape.

Organisation(s)

Institute of Wind Energy Systems

Type

Conference article

Journal

IOP Conference Series: Materials Science and Engineering

Volume

2767

No. of pages

10

ISSN

1757-8981

Publication date

10.06.2024

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Building and Construction, Mechanical Engineering, Computational Mechanics

Research Area (based on ÖFOS 2012)

Lightweight design, Computational engineering, Lightweight design, Computational engineering

Sustainable Development Goals

SDG 7 - Affordable and Clean Energy

Electronic version(s)

https://doi.org/10.1088/1742-6596/2767/5/052027 (Access: Open)