ABSTRACT

Complex nonlinear time-dependent analyses require special features not often found in commercial codes. The constitutive model developed in Chapter 2 at the very least requires an evaluation of the AAR-induced strain at each Gauss point (Eq. 2.1). From a practical point of view however and as shown in the referenced analyses, the following features must also be incorporated:

1. Transient (linear) thermal analysis 2. Transfer of nodal temperature from the thermal analysis to the stress anal-

ysis (different meshes are typically used due to the presence of interface elements)

3. Nonlinear joint elements for dam analysis and/or nonlinear continuum elements for reinforced concrete structures

4. Ability to reset displacements to zero while maintaining the stress-strain state (to separate deformations due to dead load from other loads)

5. Generation of a fairly complex input data file that specifies for each time increment: pool elevation, and nodal temperatures.