Crack Band Models and Smeared Cracking
In Section 8.3.5, we discussed a simple way to determine the stress-strain curve for a finite element of any size based on the stress-strain curve for the band. However, this applied only for the uniaxial case, which is extremely simple. In this section, we will address the complexities raised by the triaxial nature of most practical problems, although we consider principally two-dimensional problems. We stait by seeking the triaxial strain-softening equations for a finite element of any size.