Viscosity method for random homogenization of fully nonlinear elliptic equations with highly oscillating obstacles

Abstract In this article, we establish a viscosity method for random homogenization of an obstacle problem with nondivergence structure. We study the asymptotic behavior of the viscosity solution u ε {u}_{\varepsilon } of fully nonlinear equations in a perforated domain with the stationary ergodic condition. By capturing the behavior of the homogeneous solution, analyzing the characters of the corresponding obstacle problem, and finding the capacity-like quantity through the construction of appropriate barriers, we prove that the limit profile u u of u ε {u}_{\varepsilon } satisfies a homogenized equation without obstacles.