TY - JOUR

T1 - Progressive delamination analysis through two-way global-local coupling approach preserving energy dissipation for single-mode and mixed-mode loading

AU - Akterskaia, Margarita

AU - Camanho, Pedro P.

AU - Jansen, Eelco

AU - Arteiro, Albertino

AU - Rolfes, Raimund

N1 - Funding information: The research leading to these results has received funding from European Union’s Horizon 2020 research and innovation program (FULLCOMP/2015-2019) under Marie Sklodowska-Curie actions grant agreement number 642121. The provided financial support is gratefully acknowledged by the authors.

PY - 2019/9/1

Y1 - 2019/9/1

N2 - Together with fiber breakage and matrix cracking, delamination is one of the common damage mechanisms occurring in laminated fiber-reinforced composite structures. Delamination initiates due to the relatively low interlaminar strength of adjacent plies. Delamination onset and propagation can be induced by various combinations of loads and usually leads to a significant reduction of the load-carrying capacity of the structure. For this reason, an efficient and reliable progressive failure analysis capability is required. In this work, the delamination process is simulated by means of a two-way global-local coupling approach. In particular, within this novel global-local approach a method is introduced that ensures the preservation of the dissipated energy when switching between the global and local level. This approach is tested and illustrated under single-mode I and II, and mixed-mode loading in the double cantilever beam (DCB), the end-notched flexure (ENF)and the mixed-mode bending (MMB)benchmark tests, respectively, and the results are compared to available analytical solutions. Finally, the developed method has been applied to a one-stringer stiffened panel and a good agreement was attained compared to the solid model reference solution.

AB - Together with fiber breakage and matrix cracking, delamination is one of the common damage mechanisms occurring in laminated fiber-reinforced composite structures. Delamination initiates due to the relatively low interlaminar strength of adjacent plies. Delamination onset and propagation can be induced by various combinations of loads and usually leads to a significant reduction of the load-carrying capacity of the structure. For this reason, an efficient and reliable progressive failure analysis capability is required. In this work, the delamination process is simulated by means of a two-way global-local coupling approach. In particular, within this novel global-local approach a method is introduced that ensures the preservation of the dissipated energy when switching between the global and local level. This approach is tested and illustrated under single-mode I and II, and mixed-mode loading in the double cantilever beam (DCB), the end-notched flexure (ENF)and the mixed-mode bending (MMB)benchmark tests, respectively, and the results are compared to available analytical solutions. Finally, the developed method has been applied to a one-stringer stiffened panel and a good agreement was attained compared to the solid model reference solution.

KW - Composite structures

KW - DCB tests

KW - Delamination

KW - ENF tests

KW - Global-local method

KW - MMB tests

KW - Multiscale analysis

KW - Progressive failure analysis

KW - Skin-stringer debonding

UR - http://www.scopus.com/inward/record.url?scp=85065593680&partnerID=8YFLogxK

U2 - 10.1016/j.compstruct.2019.110892

DO - 10.1016/j.compstruct.2019.110892

M3 - Article

AN - SCOPUS:85065593680

VL - 223

JO - Composite structures

JF - Composite structures

SN - 0263-8223

M1 - 110892

ER -