Crack propagation in buckling plates: test results and a simplified numerical approach

Julia Bierbaum (Institute of Aircraft Design and Lightweight Structures, Technische Universität Braunschweig, Braunschweig, Germany)
Peter Horst (Institute of Aircraft Design and Lightweight Structures, Technische Universität Braunschweig, Braunschweig, Germany)

International Journal of Structural Integrity

ISSN: 1757-9864

Publication date: 22 November 2011

Abstract

Purpose

The purpose of this paper is to present the first results of tests where cracks lie in the tension field of a shear forced aluminium panel. The paper's main focus is on the crack propagation behavior and possible 3D‐effects caused by the bending of the plate. A simplified numerical approach is presented to confirm the observed phenomena.

Design/methodology/approach

Experiments have been performed to investigate the influence of buckling on accidental damages. A simplified numerical approach is presented and compared to the experimental results.

Findings

It can be shown that the crack propagates due to buckling of the plate. The principal stress of the neutral axis of the plate has significant influence on the crack propagation.

Originality/value

Investigations of stability problems and damage tolerance behavior of metallic structures have been realized but mainly separately. This paper shows that cracks propagate due to buckling and that both phenomena influence one another considering accidental damages. The paper presents the first experimental and numerical results of cracked aluminium panels subjected to cyclic shear load.

Keywords

Citation

Bierbaum, J. and Horst, P. (2011), "Crack propagation in buckling plates: test results and a simplified numerical approach", International Journal of Structural Integrity, Vol. 2 No. 4, pp. 373-382. https://doi.org/10.1108/17579861111183902

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Publisher

:

Emerald Group Publishing Limited

Copyright © 2011, Emerald Group Publishing Limited

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