Constitutive models investigation to simulate damage/failure of Aluminium (Al) 6061-T6

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Authors
  1. Leclerc, P.
  2. Toussaint, G.
Corporate Authors
Defence Research and Development Canada, Valcartier Research Centre, Quebec QC (CAN)
Abstract
The design of a military vehicle is a complex science that requires the careful consideration of factors, such as armour protection that is essential for survivability, while considering the need to conceive a lightweight and economical vehicle. Therefore, predicting the material behavior and damage until failure is of primary importance when evaluating the vulnerability of military platforms and could influence the optimization of protection systems. In this report, the aim is to investigate the effect of modifying several constitutive and damage models that could be used to simulate the damage behavior of Aluminium (Al) 6061-T6 using the LS-DYNA hydrocode. Several models are compared numerically and their strengths/weaknesses are presented. The Johnson-Cook constitutive model and GISSMO damage models were combined and the effects of varying several parameters are presented. Since defence applications involve several failure modes, further studies should be performed to investigate the material response under various triaxialities and the mesh dependency in order to simulate accurately the damage/failure of Aluminium 6061-T6.

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Keywords
Damage;Failure;Constitutive model;6061-T6
Report Number
DRDC-RDDC-2018-R198 — Scientific Report
Date of publication
01 Nov 2018
Number of Pages
54
DSTKIM No
CA047885
CANDIS No
808524
Format(s):
Electronic Document(PDF)

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