TY - JOUR
T1 - A nonlinear shell augmented finite element method for geometrically nonlinear analysis of multiple fracture in thin laminated composites
AU - Ma, Xueshi
AU - Xiong, Ke
AU - Yang, Qingda
AU - Wang, Jia
AU - Wang, Liang
N1 - Funding Information:
The authors would like to acknowledge the financial support from the National Natural Science Foundation of China (Grant No. 11232007 ), and Graduate Research and Innovation Projects of Jiangsu Province , China (Grant No. 016001), and National Natural Science Foundation of China (Grant No. 51705217 ). Furthermore , the first author Xueshi Ma also appreciates the award and sponsorship from the Chinese Government Scholarship (No. 201606830009). Thanks also go to the editors and reviewers whose constructive comments greatly improved the integrity and quality of this paper.
PY - 2021/4
Y1 - 2021/4
N2 - A nonlinear shell augmented finite element method (NS-AFEM) is proposed in this paper to account for the multiple fractures and their interactive evolutions in thin laminated composites with large deformations. This NS-AFEM employed a nonlinear elemental condensation algorithm based on Newton-Raphson method, which explicitly treated the strong discontinuity of a cracked element without the need of extra nodes. In addition, an improved geometrically nonlinear shell-like cohesive zone model (CZM) was developed and integrated into the NS-AFEM to represent the nonlinear fracture processes of composites, including matrix cracking in tension/compression, fiber tensile rupture and fiber compressive kinking, and interface delamination. The high-fidelity simulations in open-hole tension and three-point-bending tests of composite laminates demonstrate that the proposed method is capable of dealing with the geometrically nonlinear coupled crack system in thin laminated composites, which is of particular challenge in other alternative numerical methods.
AB - A nonlinear shell augmented finite element method (NS-AFEM) is proposed in this paper to account for the multiple fractures and their interactive evolutions in thin laminated composites with large deformations. This NS-AFEM employed a nonlinear elemental condensation algorithm based on Newton-Raphson method, which explicitly treated the strong discontinuity of a cracked element without the need of extra nodes. In addition, an improved geometrically nonlinear shell-like cohesive zone model (CZM) was developed and integrated into the NS-AFEM to represent the nonlinear fracture processes of composites, including matrix cracking in tension/compression, fiber tensile rupture and fiber compressive kinking, and interface delamination. The high-fidelity simulations in open-hole tension and three-point-bending tests of composite laminates demonstrate that the proposed method is capable of dealing with the geometrically nonlinear coupled crack system in thin laminated composites, which is of particular challenge in other alternative numerical methods.
KW - Coupled multiple fracture
KW - Geometrical nonlinearity
KW - Nonlinear shell augmented finite element
KW - Shell-like cohesive zone model
KW - Thin laminated composites
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U2 - 10.1016/j.tws.2020.107433
DO - 10.1016/j.tws.2020.107433
M3 - Article
AN - SCOPUS:85099154829
VL - 161
JO - Thin-Walled Structures
JF - Thin-Walled Structures
SN - 0263-8231
M1 - 107433
ER -