Journal
DYMAT 23RD TECHNICAL MEETING - INTERNATIONAL CONFERENCE ON DYNAMIC FRACTURE OF DUCTILE MATERIALS
Volume 197, Issue -, Pages 285-293Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.proeng.2017.08.106
Keywords
Ductile failure; High strain rate; Hat specimen; Compression/Shear; Tension/Shear; FEM; Constitutive modeling
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Ductile fracture is an important field in dynamic materials research. The simulation of ductile failure by means of numerical codes requires accurate material models that are validated with data obtained from precise high-rate mechanical testing. In this work, a high strength quenched and tempered steel is studied over a wide range of strain rates using different test methods to achieve a range of stress states with numerical computations being used to determine the precise stress and strain rate states for the multiaxial GIS SMO model. The consideration of stress state, not only in tensile triaxiality 0.33 and above but also in shear, tension/shear and compression/shear, will lead to greater accuracy in failure predictions for a wide range of applications involving complex multiaxial stress states, particularly for thick and high strength materials. (C) 2017 Published by Elsevier Ltd.
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