Auxetic foams have previously been shown to benefits including higher indentation resistance than their conventional counterparts, due negative Poisson’s ratio, making them better at resisting penetration by concentrated loads. The ratio and Young’s modulus of auxetic open cell rarely measured the high compressive strain rates typical during impacts energy absorbing material in sporting protect...

in this research formability behavior and texture of st14 low carbon steels produced by foolad mobarakeh plant for deep drawing application had been studied. plate textures were characterized by x-ray diffraction technique. to evaluate formability behavior one dimensional tensile test was carried out and related parameters were recognized. moreover eriksson experiment and spherical pattern prin...

in this paper, the mean value of strain energy density criterion has been used to predict the critical fracture load in specimens with u-shaped notch under bending loads. an equation for calculation of averaged strain energy density in this zone has been presented. bending loads under mode i have been considered. two cases have been studied: 1) the control volume only includes the semicircular ...