The influence of plastic strain ratios on the numerical modelling of stretch forming

The effect of serrated yielding on the determination of r-values in aluminium alloys and yield locus calibration

“…It is known that the r-values will decrease with pre-strain level regardless of the presence of serrated yielding [7]. Therefore, the analysis was conducted by fitting a straight line within the following plastic strain ranges: 0-0.05 to investigate the region without serrated yielding and 0.05-0.10 plastic strain to investigate the region containing serrated yielding.…”

Fatigue crack growth in anisotropic aluminium sheets — phase-field modelling and experimental validation

“…1. As a consequence, many investigators reported anisotropic strength properties [16,17,18]. Regarding the static crack resistance, Amstutz et al [19] tested AA2024-T351 sheet material with a thickness of 2.3 mm in L-T (crack perpendicular to grain elongation) and T-L (crack parallel to grain elongation) orientation under Mode-I loading.…”

A Study of the Dynamic Mechanical Properties of Q460D Steel

“…In light of the foregoing, great efforts are made to obtain relevant experimental data at different stress states, strain rates, and temperatures and calibrate at least uncoupled material models of various degree of complexity which are widely used in engineering practice. Very large amount of experimental data for 2024-T3(51) aluminum alloy is available in literature [60,64,68,[79][80][81][82][83][84][85], In these works samples of various geometry (smooth and notched circular cylinders, thin flat "dog-bone" specimens, thin flat notched specimens, wide smooth and grooved plates, thin-walled tubes, thick-walled tubes, bars with square cross-sections, circular plates, plates with a circular hole, parallelepipeds, specimens with a butterfly-like gauge section, etc.) machined from different blanks (rolled sheets and plates of various thickness, large rolled blocks, extruded bars with circular or square cross-section, etc.)…”