Dynamic Characterization and Constitutive Modelling of ARMSTAL 500 Steel
Journal Title: Problemy Mechatroniki. Uzbrojenie, lotnictwo, inżynieria bezpieczeństwa - Year 2015, Vol 6, Issue 3
Abstract
The behaviour of a high strength steel (ARMSTAL 500) has been investigated using a combination of quasistatic and dynamic tests for a wide strain-rate range 1•10-4 – 3•103 s-1. A uniaxial testing machine and a Split Hopkinson Pressure Bar (SHPB) have been used under well controlled testing conditions. Next, the effect of the strain hardening, the strain rate hardening, loading history and stress triaxiality on the strength and ductility of the material has been studied. The present work also describes constitutive and damage models and their implementation available in the nonlinear finite element code LS DYNA. Calibration of constitutive model parameters and damage criteria is most often accomplished via regression techniques applied to laboratory data. A 3D numerical simulation of perforation of ARMSTAL 500 plates with 7.62 × 51 mm AP projectile were carried out with detailed models of target and compared with experiment in order to validate the calibrated models. As it will be shown, ARMSTAL 500 steel is a high strength steel with modest strain-rate sensitivity. The study indicates that the penetration depth can be predicted quantitatively and qualitatively with MJC hardening parameters calibrated from compression tests. The Modified Johnson–Cook constitutive model with Cockcroft and Latham failure model can predict the projectile residual speed and the fragmentation process followed very closely by MJC failure criteria.
Authors and Affiliations
Djalel Eddine Tria, Radosław Trębiński
Keywords
Related Articles
- EP ID EP70488
- DOI -
- Views 93
- Downloads 0
Reliability Analysis of Ventube Fan Rotor
Discs of ventube fan rotor were chosen as an object of the study. As a result of an analytical calculation, distribution of radial and circumferential stress and safety factor along rotor’s disc radius was calculated. P...
Aerial Target Flight Path Modeling using B-Spline Curves
A method is presented for generating the flight path of an aerial target using B-spline curves developed for studying the combat effectiveness of anti-aircraft missiles and air defense systems. A procedure is described f...
The Synthesis of the Aluminum Hydride and its Application in Composite Propellants
Results of the research focusing on the wet synthesis of aluminum hydride (AlH3) were summarized. The compound is the object of interest in hydrogen storage due to its high concentration of hydrogen (10,1% by mass). Comp...
Możliwości wspomagania wybranych ekspertyz i opinii specjalistycznych w obszarze bezpieczeństwa przy wykorzystaniu różnych programów komputerowych
W artykule przedstawiono możliwości wspomagania wybranych ekspertyz i opinii specjalistycznych przy wykorzystaniu specjalistycznego oprogramowania, na przykładzie rekonstrukcji wypadków i wyceny pojazdów samochodowych. Z...
Properties of TiN and TiAlN Coatings Deposited onto Samples made from High Speed Steel by Sarc PVD Technique
The paper deals with assesssment of selected properties of TiN and TiAlN coatings deposited on specimens from the high speed steel HS6-5-2-5 (STN 19 852) by Sarc PVD technique. There were essessed trobological properties...