Benefits of Using Lode Angle Dependent Fracture Models to Predict Ballistic Limits of Armor Steel
Department of Mechanical and Process Engineering, ETH Zurich,
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: firstname.lastname@example.org
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
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