Experimental analysis and modelling of dynamic deformation and failure behaviour of steel

New specimen geometries with various stress states are designed and applied for dynamic loading tests. Oscillation-free force is measured during multiaxial tests in the strain range of 10 -4 – 3 s -1 . The deformation local fields specimens have been using high-speed camera evaluated by digital image correlation (DIC) techniques. It found that rate effects on fracture stressstate dependent. To model material plasticity ductile behaviour tests, an extended damage mechanics (eMBW model) used. In this work, enhanced implemented into LS-DYNA. cover at a large range, modified Johnson–Cook-type rate-dependency exponential temperature-dependency addition, influences both state locus considered. successfully predicts investigated steel under loading.