Nonlinear Finite Element Analysis of Concrete Structures

- 17G -
= displacement vector in loacl coordinates,
section 4.3.1;
= displacement in vertical direction, eq. (4.2-1);
= displacement in the Z'-direction, fig. 4.3-2;
- — = stress invariant, see eq. (2.2-5);
/3
= ordinate; and
= ordinate in local coordinate system, fig. 4.3-2;
= angle
= coefficient of thermal expansion, see eqs.
(4.2-11) and (4.3-7) to (4.3-9);
= nonlinearity index, see eqs. (2.2-1) and (2.2-2);
= engineering shearing strain, eq. (4.2-5);
= engineering shearing strain in local coordinates,
eq. (4.3-3);
= area of a triangular element, section 4.2.1;
= temperature rise, eqs. (4.2-11) and (4.3-7) to
(4.3-9);
= Kroneckers delta;
= strain, elongation is positive;
= principal strains;
= strain at uniaxial sompressive failure (e > o)
eq. (2.2-3);
= initial strain;
= radial strain, eq. (4.2-5);
= vertical strain, eq. (4.2-5);
= circumferential strain, eq. (4.2-5);
= creep strain, see eq. (2.3-1);
= elastic strain, section 2.3;
= equivalent plastic strain, see eqs. (3-2) and
(3-6);