Characterization and Modelling of the Damage Behavior of Extruded Aluminum Profiles for Crash Simulations

Dong Zhi Sun; Michael Krawiec; Hariaokto Hooputra

doi:10.4028/www.scientific.net/MSF.877.674

Paper Titles

Modelling of the Age-Hardening Behavior in AA6xxx within a Through-Process Modelling Framework
p.640

Effects of Heat Transfer Coefficients on Quenching Residual Stresses in 7055 Aluminum Alloy
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Numerical Analysis of Wavy Interface Formation and Successive Temperature Change in Magnetic Pulse Welded Al/Cu Joint
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Modelling of Strain-Path Transients in Commercially Pure Aluminium
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Optimized Design of Aluminum Cross Car Beam (CCB) Based in Modal Strain Energy Analysis
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Characterization and Modelling of the Damage Behavior of Extruded Aluminum Profiles for Crash Simulations
p.674

Multiscale Approach for the Damage Modeling of an Aluminum Casting Alloy with Stochastic Character
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Rolling Texture Simulation of Aluminium Sheets Based on the Mechanism of Intergranule Reaction Stresses
p.686

Effect of Natural Ageing on Strength and Anisotropy in Aluminium Alloy AA 6005C
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HomeMaterials Science ForumMaterials Science Forum Vol. 877Characterization and Modelling of the Damage...

Characterization and Modelling of the Damage Behavior of Extruded Aluminum Profiles for Crash Simulations

Abstract:

The damage behavior of aluminum profiles depends strongly on the stress state. Many investigations have shown that both ductile and shear fracture have to be taken into account in damage analysis. Since fracture strains of aluminum profiles are relatively low, damage modelling has to be included in component simulations. However, it is an open question, which kind of damage model can be used for crash simulations and which tests should be performed in order to calibrate the model. An extruded aluminum profile with double chambers of AA6060-T79 was characterized under different stress triaxialities and shear ratios. The damage criteria IDS (Instability, Ductile and Shear fracture) in ABAQUS/Explicit were used for the simulations. An explicit relationship between triaxiality and shear ratio was derived for plane stress state. The influence of the model parameter on the overlapping of both criteria (ductile and shear fracture) was systematically studied for shell element applications. The applied damage model was validated by comparing experimental and calculated results of component tests.