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Validation of Compression-after-Impact Experiments Using ABAQUS Simulations

ARUN KRISHNAN, WARUNA SENEVIRATNE, SHENAL PERERA

Abstract


Fiber-reinforced composites are increasingly being used in civilian and military aircraft applications due to better performance indices like high strength-to-weight ratio and ability to tailor mechanical properties. Since composites are made of multiple components, their failure mechanisms are complex and involve competing failure modes. This paper studies the experimental and numerical modeling of compression-after-impact (CAI) experiments of T650-5320 composite laminates. Experimental study is conducted at National Institute of Aviation Research (NIAR) laboratories in accordance with ASTM D7136 and ASTM D7137. The numerical finite element modeling is studied using ABAQUS software. Shell elements as well as solid elements are used to model the composite layup. The impact and the CAI experiments are modeled using ABAQUS/Explicit and ABAQUS/Standard solver respectively. Results are compared with the experiments to show a good match. Shell modeling is demonstrated as a simpler approach to model CAI to get coupon-level results. Solid modeling is proposed to get detailed results to determine damage levels within each ply.


DOI
10.12783/asc33/25923

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