(3), it can be seen that the exponent of strain hardening
n is 0.9679, which exceeds the normal range (0-0.5).
where [[sigma].sub.sc,d] is the Von Mises equivalent flow stress of the corroded rebars (MPa), A is the yield stress at a given reference strain rate (MPa), B is the coefficient of strain hardening
, C is the coefficient of strain rate hardening, n is the strain hardening
exponent, e is the equivalent plastic strain, and [mathematical expression not reproducible] is the dimension less strain rate with [??] being the strain rate and [[??].sub.0] the reference strain rate.
Giannakopoulos, "Total deformation, plane-strain contact analysis of macroscopically homogeneous, compositionally graded materials with constant power-law strain hardening
," Journal of Applied Mechanics, Transactions ASME, vol.
Effect of strain hardening
on the elasto-plastic behavior of beams and grillages, Proceedings of the Institution of Civil Engineers 28: 489-504.
There is a competition between strain hardening
and necking, The unirradiated sample of nickel did not fracture even with 56 per cent elongation.
The strain hardening
test method, which SABIC says reduces the time and cost associated with getting material for plastic pressure pipes to market, was first launched in 2010.
For an elastic-plastic material with strain hardening
, the mean static load carrying capacity, [??], for a double-hat specimen is given as (with [[epsilon].sub.u] = 0.3 and n = 0.1 for a strain hardening
Negative values of [psi] are expected for strain hardening
materials, and positive values are for strain softening.
(2006) indicated that critical stated model was capable of simulating strain hardening
, softening, normal dilatancy and stress-path dependency of interface between sandy soil and structures during shearing.
During bending deformation hardening occurs only in small part of bend (in local deformation) of stamped part, in non-deformed parts (in straight parts of stamped part) deformation strain hardening
Kunieda, "Evaluation of shear failure of strain hardening
cementitious composite beams," in Proceedings of the 12th East Asia-Pacific Conference on Structural Engineeringand Construction (EASEC12 '11), vol.
Morrow (7) also shows that fatigue strength and ductility exponents (b and c) can be estimated from cyclic strain hardening
exponent (n'), according to: