Criterion and Fracture Propagation Criterion of the Soft Coal Seam.
In the stage of plastic deformation, with the increase in the model size, the limit yield stress and the corresponding yield strain of the material decrease and the plastic yield
point moves forward.
The plastic yield
function, damage, and healing evolution equations are plugged into the consistency condition.
(3) Plastic yield
deformation phase: in this phase, the curve exhibited an ascending tendency in the upward concave profile; that is, the curve ascended with gradual decreases in the slope until the peak value was reached.
"The average plastic yield
over these seven years is 16t/ha which is over 3t/ha more than the open maize and most of this extra yield is high value starch."
The stress-strain behavior of MPR is linear with no evidence of a "plastic yield
" point like TPEs, and MPR recovers elastically from 100% strain.
Lund, "Atomistic basis for the plastic yield
criterion of metallic glass," Nature Materials, vol.
Fresh concrete measurements Truck Measurements ICAR Rheometer Mixture Slump Yield Plastic Yield
Plastic Stress designation stress viscosity stress viscosity growth value value value value Max torque (mm) (kPa) (kPa*s) (N*m) (N*m*s) (N*m) Empty 2131 1397 truck C10 70 8074 2034 4.38 0.321 24.26 C11 110 7651 1595 3.04 0.155 9.98 C12 170 6250 1848 2.65 0.115 9.26 C13 240 4115 2374 1.42 0.086 4.18 C14 150 6074 1901 1.97 0.151 9.42 C20 60 8472 3334 4.66 0.154 13.69 C21 120 6939 3282 2.73 0.105 8.77 C22 60 6080 3278 2.33 0.126 12.30 C23 40 7792 3177 4.11 0.121 20.77
The Plastic Yield
Stress, defined as the stress at which the stress/strain curve became approximately horizontal, was higher for the axial specimens than for the transverse specimens.
where [[Omega].sub.ij] is the activation volume tensor, and the quantity [[Omega].sub.ij]/f denotes the volume of the polymer segment needed to move as a whole for plastic yield
to occur, while yield occurs when the magnitude of shear stress reaches a critical value.
Furthermore, it has been recognized that volume relaxation, viscoelastic response and plastic yield
share the same structural relaxation mechanism (12).