Title: Numerical Analysis of Damage Resistance of A Long Discontinuous Fiber Composite to a Drop-Weight Impact Event

Authors: Marco Didone, Oleksandr G. Kravchenko, Sergii G. Kravchenko

DOI: 10.33599/nasampe/s.24.0069

Abstract: This paper introduces a numerical model for low-velocity impact resistance analysis in a Long Discontinuous Fiber Reinforced Polymer Composite with stochastic meso-structure. The discontinuous fiber type employed in this work is derived from continuous fiber prepreg cut and slit into platelets and compression molded afterwards, herein referred to as Prepreg Platelet Molded Composite. The stochastic nature of this material plays an important role in the effective mechanical properties, which are primarily influenced by the local orientation of the individual platelets and their dimensions. A progressive failure finite element model was developed to study the formation of impact damage in virtual platelets plates, wherein the featuring complex stochastic composite meso-structure were generated in Digimat and exported for analysis to ABAQUS/Explicit. A continuum damage mechanics-based material model with Hashin failure initiation criteria was used to predict intra- and trans-laminar damage modes in prepreg platelets, while cohesive zone modeling was used between all the platelets to simulate delamination damage. The present study established that the numerical model can accurately reproduce low-velocity impacts while allowing more comprehensive studies on the effects of platelets plates complex meso-structure on material behavior under impact loading.

References: [1]Bachmann J, Hidalgo C, Bricout S. Environmental analysis of innovative sustainable composites with potential use in aviation sector—A life cycle assessment review. Sci China Technol Sci 2017;60:1301–17. https://doi.org/10.1007/s11431-016-9094-y. [2]Kravchenko SG, Volle C, Kravchenko OG. An experimental investigation on low-velocity impact response and compression after impact of a stochastic, discontinuous prepreg tape composite. Composites Part A: Applied Science and Manufacturing 2021;149:106524. https://doi.org/10.1016/j.compositesa.2021.106524. [3]D30 Committee. Test Method for Measuring the Damage Resistance of a Fiber-Reinforced Polymer Matrix Composite to a Drop-Weight Impact Event. ASTM International; n.d. https://doi.org/10.1520/D7136_D7136M-20. [4]Barroeta Robles J, Dubé M, Hubert P, Yousefpour A. Repair of thermoplastic composites: an overview. Advanced Manufacturing: Polymer & Composites Science 2022;8:68–96. https://doi.org/10.1080/20550340.2022.2057137. [5]Digimat 2021.4 FE User’s Guide n.d. [6]Taketa I, Okabe T, Kitano A. A new compression-molding approach using unidirectionally arrayed chopped strands. Composites Part A: Applied Science and Manufacturing 2008;39:1884–90. https://doi.org/10.1016/j.compositesa.2008.09.012. [7]Kravchenko SG, Sommer DE, Pipes RB. Uniaxial strength of a composite array of overlaid and aligned prepreg platelets. Composites Part A: Applied Science and Manufacturing 2018;109:31–47. https://doi.org/10.1016/j.compositesa.2018.02.032. [8]Sommer DE, Kravchenko SG, Denos BR, Favaloro AJ, Pipes RB. Integrative analysis for prediction of process-induced, orientation-dependent tensile properties in a stochastic prepreg platelet molded composite. Composites Part A: Applied Science and Manufacturing 2020;130:105759. https://doi.org/10.1016/j.compositesa.2019.105759. [9]Kravchenko SG. FAILURE ANALYSIS IN PLATELET MOLDED COMPOSITE SYSTEMS n.d. [10]Kravchenko SG, Pipes RB. VIRTUAL TENSILE TESTING OF PREPREG PLATELET COMPOSITE MOLDED WITH STOCHASTIC MORPHOLOGY n.d. [11]Hashin Z. Failure Criteria for Unidirectional Fiber Composites. Journal of Applied Mechanics 1980;47:329–34. https://doi.org/10.1115/1.3153664. [12]Abaqus Analysis User’s Manual, vol5 n.d. [13]Sun XC, Hallett SR. Barely visible impact damage in scaled composite laminates: Experiments and numerical simulations. International Journal of Impact Engineering 2017;109:178–95. https://doi.org/10.1016/j.ijimpeng.2017.06.008. [14]Wanthal S, Schaefer J, Justusson B, Hyder I, Engelstad S, Rose C. Session Topic: Verification & Validation of Progressive Damage/Failure Analysis for Stiffened Composite Structures n.d.:17. [15]Reiner J, Feser T, Schueler D, Waimer M, Vaziri R. Comparison of two progressive damage models for studying the notched behavior of composite laminates under tension. Composite Structures 2019;207:385–96. https://doi.org/10.1016/j.compstruct.2018.09.033. [16]Camanho PP, Maimí P, Dávila CG. Prediction of size effects in notched laminates using continuum damage mechanics. Composites Science and Technology 2007;67:2715–27. https://doi.org/10.1016/j.compscitech.2007.02.005. [17]McElroy M, Leone F, Ratcliffe J, Czabaj M, Yuan FG. Simulation of delamination–migration and core crushing in a CFRP sandwich structure. Composites Part A: Applied Science and Manufacturing 2015;79:192–202. https://doi.org/10.1016/j.compositesa.2015.08.026.

Conference: SAMPE 2024

Publication Date: 2024/05/20

SKU: TP24-0000000069

Pages: 15

Price: $30.00