This submission presents the results of a preliminary numerical study of an un-tensioned spiral-strand cable subjected to explosively formed fragment impact. An effective approach to generate finite element models of multi-layer spiral-strands with complex contact conditions has been devised. The modified Johnson-Cook model coupled with the Cockcroft-Latham fracture criterion was used to model ...

Degradation, damage evolution, and fatigue models in the literature for various engineering materials, mostly metals composites, are reviewed. For empirical established under framework of Newtonian mechanics, Gurson–Tvergaard–Needleman (GTN) type model, Johnson-Cook (J-C) microplasticity some other micro-mechanism based models, using irreversible entropy as a metric with an evolution function t...

Abstract In this study, tensile tests of 304 and 316 austenitic stainless steels (ASS) at various strain rates were performed to investigate the rate effect on properties. It is shown that stress depends not only but also plastic level. Accordingly, a modification existing Johnson–Cook (J–C) model proposed incorporate interacting for ASS. The modified J–C can reduce difference from experimental...

Advances in plasticity based analytical modeling and finite element methods (FEM) based numerical modeling of metal cutting have resulted in capabilities of predicting the physical phenomena in metal cutting such as forces, temperatures and stresses generated. However, accuracy and reliability of these predictions rely on a work material constitutive model describing the flow stress, at which w...