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Published in:
Standardized Analytical Weight Function Method Based on Crack Opening Displacements Read chapter Read first chapter

2022 | OriginalPaper | Chapter

8. Weight Function Method for Collinear Cracks and Its Application to Multiple Site Damage

Authors : Xue-Ren Wu, Wu Xu

Published in: Weight Function Methods in Fracture Mechanics

Publisher: Springer Nature Singapore

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Abstract

Structure with multiple site damage (MSD) is a serious threat to aircraft safety. The weight function method (WFM) for multiple collinear cracks is derived and exact weight functions (WF) for two and three collinear cracks are given this chapter. The WFM is then used to determine the stress intensity factors (SIFs), crack opening displacement (COD) and plastic zones of two and three collinear cracks in unstiffened and stiffened plates. These results are verified by finite element method (FEM) and existing results from literature. The WFM is used with CTOA criterion to predict the stable crack growths and residual strengths of sheets with MSD. The predicted crack behaviors and residual strengths agree well with the experimental results. Compared to FEM for predicting residual strength of plate with MSD, the WFM is much more efficient.

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previous chapter Weight Function Method for Crack in Orthotropic Materials
next chapter Mode II Weight Functions and Mixed Mode Stress Intensity Factors
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Metadata
Title
Weight Function Method for Collinear Cracks and Its Application to Multiple Site Damage
Authors
Xue-Ren Wu
Wu Xu
Copyright Year
2022
Publisher
Springer Nature Singapore
Book
Weight Function Methods in Fracture Mechanics

Print ISBN: 978-981-16-8960-4

Electronic ISBN: 978-981-16-8961-1

Copyright Year: 2022

DOI
https://doi.org/10.1007/978-981-16-8961-1_8

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