Numerical simulations of combined size effects acting on an open-hole laminated composite plate under tension
| Autor: | Joel Serra, Christophe Bouvet, Prajwal Karinja Haridas, Léon Ratsifandrihana |
|---|---|
| Přispěvatelé: | Institut Clément Ader (ICA), Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-IMT École nationale supérieure des Mines d'Albi-Carmaux (IMT Mines Albi), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), Segula Technologies [France] |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Finite Element Model
Mechanics of Materials Mechanical Engineering [SPI.MECA.MEMA]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Mechanics of materials [physics.class-ph] Materials Chemistry Ceramics and Composites Discrete Ply Modeling Size effect Thickness effect Open-hole tensile test Blocked plies |
| Zdroj: | Journal of Composite Materials Journal of Composite Materials, In press, ⟨10.1177/00219983221139791⟩ |
| ISSN: | 0021-9983 |
| DOI: | 10.1177/00219983221139791⟩ |
| Popis: | International audience; Numerical and experimental research programs have been carried out to investigate the effect of scaling on the tensile strength of notched composites. This paper presents a computational study of scaled open-hole tensile tests using the Discrete Ply Model (DPM) method. This finite element model is discrete, and only a small number of parameters are required from experimental characterization tests. Experimental and numerical strength values are compared here, and reveal that DPM simulations tend to slightly overestimate strength values, with an average discrepancy of 9.7%. However, DPM Results show that such modeling simulates both the reduction in strength when specimen size is increased for sublaminate level scaled specimens, where failure is fiber dominated, and the increase in strength when specimen size is increased for ply level scaled specimens, where failure is delamination dominated. In all cases, increasing the total thickness of the specimen leads to a decrease in strength and this effect is dominant over the effect of increasing hole diameter. As well as the variation in strength, three distinct failure mechanisms are observed: fiber failure with extensive matrix damage (pull-out failure), fiber failure with little or no matrix damage (brittle failure) and delamination failure. Comparisons with experiments demonstrate that tensile strengths, damage propagation scenarios and failure patterns are predicted with acceptable accuracy. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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