Open AccessNumerical Methodology for Aerostructures Hail Impact Damage Prediction
Author(s) -
Darko Ivančević,
Ivan Badurina Žakan,
Ivica Smojver
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1024/1/012082
Subject(s) - smoothed particle hydrodynamics , isotropy , nonlinear system , robustness (evolution) , plasticity , materials science , strain rate , constitutive equation , structural engineering , mechanics , eulerian path , lagrangian , material failure theory , computer simulation , finite element method , mathematics , engineering , composite material , physics , biochemistry , chemistry , quantum mechanics , gene
The two numerical approaches for modelling of soft-body impact in Abaqus/Explicit have been applied in this work for prediction of high-velocity hail impact damage in aeronautical structures. The applied methods are the CEL (Coupled Eulerian Lagrangian) and SPH (Smoothed Particle Hydrodynamics), while the impacted structure is a metallic slat structure. Comparison of the CEL and SPH methods has been performed by impact simulations at a rigid plate, aimed to validate the applied material model, and by simulation of the slat structure impact. Two material models have been applied to study the effect of high strain-rates at the damage process in the metallic structure. The first is the standard isotropic plasticity model that defines material failure based on the value of equivalent plastic strain. The second constitutive model in the analyses is the Johnson-Cook model that includes the effects of strain rate and temperature on the material failure process. The simulations have been stable, illustrating the robustness of Abaqus/Explicit in these highly nonlinear impact cases. Compared to the CEL, the SPH method is computationally more efficient.