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

verfasst von

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.

Organisationseinheit(en)

Institut für Windenergiesysteme

Typ

Konferenzaufsatz in Fachzeitschrift

Journal

IOP Conference Series: Materials Science and Engineering

Band

2767

Anzahl der Seiten

10

ISSN

1757-8981

Publikationsdatum

10.06.2024

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Bauwesen, Maschinenbau, Numerische Mechanik

Fachgebiet (basierend auf ÖFOS 2012)

Leichtbau, Computational Engineering, Leichtbau, Computational Engineering

Ziele für nachhaltige Entwicklung

SDG 7 – Erschwingliche und saubere Energie

Elektronische Version(en)

https://doi.org/10.1088/1742-6596/2767/5/052027 (Zugang: Offen)