An alternative procedure to identify stress-strain relation for DP980 sheet over a large strain range

A Strain Range Dependent Cyclic Plasticity Model

Hysteresis loop curves are highly important for numerical simulations of materials deformation under cyclic loadings. The models mainly take account of only the tensile half of the stabilized cycle in hysteresis loop for identification of the constants which don’t vary with accumulation of plastic strain and strain range of the hysteresis loop. This approach may be quite erroneous particularly ...

Large Strain Mechanical Behavior of HSLA-100 Steel Over a Wide Range of Strain Rates

High-strength low alloy steels (HSLA) have been designed to replace high-yield (HY) strength steels in naval applications involving impact loading as the latter, which contain more carbon, require complicated welding processes. The critical role of HSLA-100 steel requires achieving an accurate understanding of its behavior under dynamic loading. Accordingly, in this paper, we experimentally inv...

A New Technique based on Strain Energy for Correction of Stress-strain Curve

Tensile stress-strain curve is of high importance in mechanics of materials particularly in numerical simulations of material deformations. The curve is usually obtained by experiment but is limited by necking phenomenon. Engineering stress-strain curve is converted to true stress-strain curve through simple formulas. The conversion, however, is correct up the point of necking. From this point ...

Flow stress of Nitronic-50 stainless steel over a wide range of strain rates and temperatures

To understand and model the thermomechanical response of Nitronic-50 stainless steel, uniaxial compression tests are performed on cylindrical samples, using an Instron servohydraulic testing machine and an enhanced Hopkinson technique. True strains exceeding 60% are achieved in these tests, over the range of strain rates from 0.001/s to 8000/s, and at initial temperatures from 77 K to 1000 K. T...

Large Strain Range Dynamic Testing at High and Medium Strain Rates, Using a Common Scale SHPB