Nonlinear Finite Element Analysis of Concrete Structures

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secant value of Poisson's ratio at failure,
eqs. (2.2-7) and (2.2-8);
secant value of Poisson's ratio, eq. (2.2-7);
stress invariant, see fig. 2.1-la);
stress invariant, see fig. 2.1-1;
stress, tensile is positive;
principal stresses, a, _> o ? _> a v
uniaxial compressive strength (a
equivalent stress, eq. (3-1);
radial stress, eq. (4.2-8);
uniaxial tensile strength (a. > o);
vertical stress, eq. (4.2-8);
initial stress, eq. (3-19);
tangential stress, eq. (4.2-8);
> o);
stress in the R'-direction, see fig. 4.3-2;
circumferential stress, section 4.3.1;
biaxial compressive strength (a , > o);
stress tensor;
initial principal stress, eq. (3-11);
initial principal stress, eq. (3-11);
stress tenser in an element, eq. (4.1-28);
initial stress tensor, eq. (4.1-3);
initial stress tensor in an element, eq.
(4.1-28);
stress vector, eq. (4.2-8);
initial stress vector, eq. (4.3-24);
stress vector in the local coordinate system,
fig. 4.2-3;
stress vector for a bar element. This vactor is
related to local coordinates, eq. (4.3-6);