Simple shear behavior and constitutive modeling of 304 stainless steel over a wide range of strain rates and temperatures

A novel single shear specimen (SSS) together with a correction coefficient method is used to study the deformation behavior of 304 stainless steel under loadings. Shear stress-shear strain relations over wide range rates (0.001 39000 s?1) at three initial temperatures (77 473 K) are obtained experimentally. The effects rate and temperature on flow stress curves determined. With increasing or temperature, hardening decreases continuously. At maximum s?1, negative observed. very high above 13000 sharp increase in observed, indicating rapid rise sensitivity. fracture morphology post-mortem specimens analyzed no well-developed adiabatic bands This may be due shear-tension state without hydrostatic pressure process. Based experimentally curves, parameters modified Johnson-Cook (MJC) model good agreement between experiments predictions found, an average error 3.9%. Using finite element analysis, distributions components zone analyzed. It found that play dominant roles, simple low triaxiality (0.015) Lode angle parameter (0.014) obtained.