  The ratio of directional strength-to-stiffness is important in governing the
relative order in which individual crystals within a polycrystalline aggregate
will yield as the aggregate is loaded. In this paper, a strength-to-stiffness
parameter is formulated for multiaxial loading that extends the development of
Wong and Dawson for uniaxial loading. Building on the principle of
strength-to-stiffness, a methodology for predicting the macroscopic stresses at
which elements in a finite element mesh yield is developed. This analysis uses
elastic strain data from one increment of a purely elastic finite element
simulation to make the prediction, given knowledge of the single-crystal yield
surface. Simulations of austenitic strainless steel AL6XN are used to
demonstrated the effectivness of the strength-to-stiffness parameter and yield
prediction methodology.
