Experimental and numerical analysis of unfolding failure of L-shaped CFRP specimens
Autor: | Léon Ratsifandrihana, Christophe Bouvet, Pierre Journoud, Bruno Castanié, Frédéric Laurin |
---|---|
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], DMAS, ONERA, Université Paris Saclay (COmUE) [Châtillon], ONERA-Université Paris Saclay (COmUE), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-IMT École nationale supérieure des Mines d'Albi-Carmaux (IMT Mines Albi), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)-Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO), Centre National de la Recherche Scientifique - CNRS (FRANCE), Ecole nationale supérieure des Mines d'Albi-Carmaux - IMT Mines Albi (FRANCE), Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE), Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE), Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Segula Technologies (FRANCE), Département de Mécanique des Structures et Matériaux - DMSM (Toulouse, France) |
Jazyk: | angličtina |
Rok vydání: | 2019 |
Předmět: |
Materials science
UNFOLDING FAILURE Stacking 02 engineering and technology Curvature COMPOSITE L-ANGLE [SPI]Engineering Sciences [physics] 0203 mechanical engineering Translaminar matrix cracking Ultimate tensile strength Perpendicular [CHIM]Chemical Sciences Civil and Structural Engineering Shearing (physics) TRANSLAMINAR MATRIX CRACKING [PHYS]Physics [physics] Unfolding failure business.industry Numerical analysis DELAMINATION Structural engineering 021001 nanoscience & nanotechnology Composite L-angle Transverse plane 020303 mechanical engineering & transports Delamination Ceramics and Composites Bending moment Mécanique des matériaux 0210 nano-technology business |
Zdroj: | Composite Structures Composite Structures, 2019, 232, 111563, p. 1-13. ⟨10.1016/j.compstruct.2019.111563⟩ Composite Structures, Elsevier, 2019, 232, 111563, p. 1-13. ⟨10.1016/j.compstruct.2019.111563⟩ |
ISSN: | 0263-8223 |
DOI: | 10.1016/j.compstruct.2019.111563⟩ |
Popis: | International audience; Highly curved laminated parts are used at the junction between two different perpendicular panels on aircraft primary structures. Usually, these laminates fail by delamination due to a bending moment, which appears when the part is loaded. The bending moment tries to flatten the part and out-of-plane tensile stresses are generated in the curvature. This failure is traditionally called unfolding failure. The modelling strategy called the 'Discrete Ply Model' (DPM) is used to simulate four-point bending tests on L-angle specimens. Experimental results of four point bending tests carried out at ONERA are used to validate the approach. Four different stacking sequences with the same thickness are taken into consideration in this study. In a second part, a sensitivity analysis on frictional coefficient, intralaminar matrix cracking, transverse tensile and shearing strength, and critical energy release rate in modes I and II is performed numerically and provides an original explanation of the failure scenario and the most influential parameter. |
Databáze: | OpenAIRE |
Externí odkaz: |