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Prediction of Load-Bearing Capacity of Composite Parts with Low-Velocity Impact Damage: Identification of Intra- and Inter-Ply Constitutive Models

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Department of Mechanical, Automotive and Materials Engineering, University of Windsor, 401 Sunset Ave., Windsor, ON N9B 3P4, Canada
2
Department of Aircraft Construction and Design, Samara National Research University, Moskovskoe Shosse 34, Samara 443086, Russia
*
Author to whom correspondence should be addressed.
Appl. Mech. 2020, 1(1), 59-78; https://doi.org/10.3390/applmech1010005
Received: 9 January 2020 / Revised: 28 February 2020 / Accepted: 1 March 2020 / Published: 6 March 2020
Assessments of residual load-carrying capacity are often conducted for composite structural components that have received impact damage. The availability of a verified simulation methodology can provide significant cost savings when such assessments are required. To support the development of a reliable and accurate simulation methodology, this study investigated the predictive capabilities of a stacked solid-shell finite element model of a cylindrical composite component with a damage mechanics-based description of the intra-ply material response and a cohesive contact model used for simulation of the inter-ply behavior. Identification of material properties for the model was conducted through mechanical characterization. Special attention was paid to understanding the influence of non-physical parameters of the intra- and inter-ply material models on predicting compressive failure load of damaged composite cylinders. Calibration of the model conducted using the response surface methodology allowed for identifying rational values of the non-physical parameters. The results of simulations with the identified and calibrated finite element model showed reasonable correlation with experimental data in terms of the predicted failure loads and post-impact and post-failure damage modes. The investigated modeling technique can be recommended for evaluating the residual load-bearing capacity of flat and curved composite parts with impact damage working under the action of compressive loads. View Full-Text
Keywords: impact modeling; composite structures; compression after impact; finite element analysis; identification of constitutive material models impact modeling; composite structures; compression after impact; finite element analysis; identification of constitutive material models
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Cherniaev, A.; Pavlova, S.; Pavlov, A.; Komarov, V. Prediction of Load-Bearing Capacity of Composite Parts with Low-Velocity Impact Damage: Identification of Intra- and Inter-Ply Constitutive Models. Appl. Mech. 2020, 1, 59-78.

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