The CDM constitutive model for the mechanical behavior of rock salt: Recent developments and extensions

Chapter

ABSTRACT

The total effective stress results from a combination of these local stress levels (Vogler 1992):

σ σeff s s h hf fσ (1)

f f f fs h s h= ⇒1 (2)

where fs and fh denote the volume fractions of the soft and hard regions, respectively.