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Open holes in composite laminates with finite dimensions: structural assessment by analytical methods

Nguyen-Hoang, M. ; Becker, W. (2025)
Open holes in composite laminates with finite dimensions: structural assessment by analytical methods.
In: Archive of Applied Mechanics, 2022, 92 (3)
doi: 10.26083/tuprints-00028537
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Open holes in composite laminates with finite dimensions: structural assessment by analytical methods
Language: English
Date: 16 January 2025
Place of Publication: Darmstadt
Year of primary publication: March 2022
Place of primary publication: Berlin ; Heidelberg
Publisher: Springer
Journal or Publication Title: Archive of Applied Mechanics
Volume of the journal: 92
Issue Number: 3
DOI: 10.26083/tuprints-00028537
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

Open circular holes are an important design feature, for instance in bolted joint connections. However, stress concentrations arise whose magnitude depends on the material anisotropy and on the defect size relative to the outer finite plate dimensions. To design both safe and light-weight optimal structures, precise means for the assessment are crucial. These can be based on analytical methods providing efficient computation. For this purpose, the focus of the present paper is to provide a comprehensive stress and failure analysis framework based on analytical methods, which is also suitable for use in industry contexts. The stress field for the orthotropic finite-width open-hole problem under uniform tension is derived using the complex potential method. The results are eventually validated against Finite-Element analyses revealing excellent agreement. Then, a failure analysis to predict brittle crack initiation is conducted by means of the Theory of Critical Distances and Finite Fracture Mechanics. These failure concepts of different modelling complexity are compared to each other and validated against experimental data. The size effect is captured, and in this context, the influence of finite width on the effective failure load reduction is investigated.

Uncontrolled Keywords: Open hole, Finite-dimensions effect, Stress and strength analysis, Complex potentials, Theory of Critical Distances, Finite Fracture Mechanics
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-285378
Classification DDC: 500 Science and mathematics > 510 Mathematics
600 Technology, medicine, applied sciences > 620 Engineering and machine engineering
600 Technology, medicine, applied sciences > 690 Building and construction
Divisions: 16 Department of Mechanical Engineering > Institute of Structural Mechanics (FSM)
Date Deposited: 16 Jan 2025 09:59
Last Modified: 16 Jan 2025 09:59
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/28537
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