A progressive interlaminar damage model, based on the Northwestern University theory and a trapezoidal trilinear traction-separation law, is presented to predict the initiation and propagation of delamination in layered composites under Mode I and Mode II loadings. The capability and reliability of the damage model proposed is assessed by comparing its results with experimental data. It was found that the model was able to accurately predict the maximum load and postfailure behavior of composite laminates. The model proposed was also compared with the Abaqus inbuilt cohesive surface model, which is also based on a bilinear tractionseparation law, and our model was found to give more accurate results.
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This work was funded by the National Science Foundation of China (contract No. 41602373, 51905353) and the China Postdoctoral Science Foundation Grant (2018M631817).
Russian translation published in Mekhanika Kompozitnykh Materialov, Vol. 56, No. 6, pp. 1067-1080, November-December, 2020.
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Wang, Z.Z., Zhao, J., Ma, X. et al. Numerical Simulation of Progressive Delamination in Composite Laminates Under Mode I and Mode II Loadings. Mech Compos Mater 56, 735–746 (2021). https://doi.org/10.1007/s11029-021-09919-4
- softening law
- cohesive zone method
- computational model