An evaluation of the finite element program IMPETUS

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Authors
  1. McIntosh, G.W.J.
  2. Rinfret, J.
Corporate Authors
Defence Research and Development Canada, Valcartier Research Centre, Quebec QC (CAN)
Abstract
The goal of this study was to evaluate the finite element code IMPETUS in both a general sense and also for the particular needs of DRDC Valcartier. IMPETUS does a good job as general finite element program. The ability to correctly use tetrahedral elements as easily as hexahedral elements is a definite advantage. There are still bugs in the code but these should disappear with time. IMPETUS also shows promise for DRDC Valcartier applications. The Johnson-Cook model is implemented in it and works for a Taylor test. IMPETUS can also model moderate speed impacts but the ability to handle high speed impacts or shaped charged jets was not examined. Simulations involving blast effects can be handled. There are indications that, with further effort, a fragmentation of an exploding shell might be doable. Modelling fluid-structure interactions does not seem possible at this time but this is a challenge for most finite element codes.

Il y a un résumé en français ici.

Keywords
finite element modelling;IMPETUS
Report Number
DRDC-RDDC-2015-R231 — Scientific Report
Date of publication
01 Nov 2015
Number of Pages
54
DSTKIM No
CA041558
CANDIS No
802753
Format(s):
Electronic Document(PDF)

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