Abstract: A phenomenological constitutive model is proposed which aims at describing the overall effect of microfracture in ceramics. Based on this model, the asymptotic stress, strain, and displacement ...

Abstract: A statistical mechanical theory of forest hardening is developed in which yielding arises as a phase transition. For simplicity, we consider the case of a single dislocation loop moving on a ...

Abstract: In specimens undergoing strain localization, applied forces and the corresponding measured displacements cannot be directly constraed as stress‐strain data, owing to the inhomogeneous character of the deformation. This ...

Abstract: We analyze the operation of melting probes as a Stefan problem for the liquid/solid interface surrounding the probe. We assume that the liquid layer is thin and, therefore, amenable to analysis by the lubrication theory. ...

Abstract: The problem studied in this paper concerns the dynamic expansion of a spherical void in an unbounded solid under the action of remote hydrostatic tension. The void is assumed to remain spherical ...

Abstract: A fuelcell stack produces a low and unregulated dc voltage; therefore, a dcdc converter is required to step up and regulate the output voltage. A major drawback is that the output voltage of the fuelcell stack exhibits a ...

Abstract: The problem addressed in this paper concerns the statistical characterization of the state of residual stress generated in polycrystalline ceramics during cooling from the fabrication temperature. ...

Abstract: We explore whether the continuum scaling behavior of the fracture energy of metals extends down to the atomistic level. We use an embedded atom method (EAM) model of Ni, thus bypassing the need to model straingradient ...

Abstract: Experiments have shown that there may be an optimal grain size which maximizes the toughness of polycrystalline ceramics. In this paper, we attempt to develop a theoretical model which can ...

Abstract: This paper summarizes a new approach to the probabilistic modeling of fatigue crack growth. The material’s resistance to fatigue crack growth is modeled as a stochastic process, which varies ...