| Issue |
EPJ Web Conf.
Volume 183, 2018
DYMAT 2018 - 12th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading
|
|
|---|---|---|
| Article Number | 01052 | |
| Number of page(s) | 6 | |
| Section | Modelling and Numerical Simulation | |
| DOI | https://doi.org/10.1051/epjconf/201818301052 | |
| Published online | 07 September 2018 | |
https://doi.org/10.1051/epjconf/201818301052
Benefits of Using Lode Angle Dependent Fracture Models to Predict Ballistic Limits of Armor Steel
1
Department of Mechanical and Process Engineering, ETH Zurich,
Switzerland
2
French-German Research Institute of Saint-Louis (ISL),
5 rue du Général Cassagnou,
68301
Saint-Louis,
3
Impact and Crashworthiness Lab, Department of Mechanical Engineering, Massachusetts Institute of Technology,
Cambridge
MA,
USA
*
Corresponding author: ccroth@ethz.ch
Published online: 7 September 2018
Ductile fracture experiments are carried out at different stress states, strain rates and temperatures on a range of flat Mars 300 steel specimens to calibrate both a plasticity and a fracture model. To predict the onset of fracture a stress state and strain rate-dependent Hosford–Coulomb fracture initiation model is used. Single material impact experiments are performed on targets of homogenous and perforated Mars 300 plates by accelerating cylindrical Mars 300 impactors in a single-stage gas gun. It is shown that the chosen modeling approach allows accurate modeling of the plastic response as well as the fracture patterns.
© The Authors, published by EDP Sciences, 2018
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.