M. Quik et al., DYNAMIC-MECHANICAL PROPERTIES OF AUTOMOTIVE THIN SHEET STEEL IN TENSION, COMPRESSION AND SHEAR, Journal de physique. IV, 7(C3), 1997, pp. 379-384
Thin sheet steel has been tested at different strain rates ranging (10
(-3) to 10(+3) s(-1)) under different deformation modes. The specimens
were cut from thin sheet at 0 and 90 degrees with respect to the roll
ing direction. It was found that pre-strained specimens in tension are
characterised by higher initial yielding and a strong decrease of the
strain hardening. Specimens at 90 degrees show at increasing strain r
ate a higher yielding stress with respect to 0 degrees specimens empha
sising the importance of anisotropy effects in sheet metals. Furthermo
re, the equivalent flow curve at relatively large strain values do not
coincide at different deformation modes (shear, compression and tensi
on).