Phenomenological Constitutive Law Research Articles

Constitutive behavior and crack tip fields for materials undergoing creep-constrained grain boundary cavitation

Based on micro-mechanical considerations, a phenomenological constitutive law is proposed for the steady creep of polycrystalline materials undergoing creep-constrained grain boundary cavitation. Singular stress and strain-rate fields at the tip of a stationary, plane strain crack are obtained revealing the role of cavitation on near-tip behavior.