The purpose of this paper is to understand the combined effect of thermal and mechanical plastic deformation on residual stresses in ground components. The interactions between a grinding wheel and a workpiece, including both thermal and mechanical interaction, are simulated by triangular surface loads moving with the table speed of grinding. Cooling is modelled by a uniform convection over the...

We present experimental and numerical results of the effect that a partial discharge has on the morphological and micro-mechanical properties of non-spherical, convex particles in a silo. The comparison of the particle orientation after filling the silo and its subsequent partial discharge reveals important shear-induced orientation, which affects stress propagation. For elongated particles, th...

The origin of stress dip under the apex of a standard sandpile has stimulated significant debate within the scientific community. On the other hand, it could be argued that a semipile built against a vertical wall is of more practical interest since it serves as a model of dams, dykes, and embankments. There is surprisingly little information available for the stress distribution in this case. ...

Aims. We determine the components of the Λ-effect tensor that quantifies the contributions to the turbulent momentum transport even for uniform rotation. Methods. Three-dimensional numerical simulations are used to study turbulent transport in triply periodic cubes under the influence of rotation and anisotropic forcing. Comparison is made with analytical results obtained via the so-called mini...

PURPOSE To report a keratoconus case with bilateral horizontal Vogt's striae. METHOD The clinical findings of the patient and the development of the direction of striae are discussed. RESULTS Vogt's striae, defined as vertical stress lines, are rarely horizontal. One patient with unilateral horizontal stress lines on his left eye has been reported in the literature. Our patient has horizont...

The morphology, stress, and composition distributions of the crosshatch pattern on a SiGe film grown on a Si~001! substrate using a low-temperature Si buffer are studied by atomic force and Raman microscopies. Crosshatching is not related to composition fluctuation regardless of the stress undulation associated with strain relaxation in the SiGe film. The crosshatch morphology arises from verti...

coastal urban areas when onshore flow occurs. However, it may also be of significance in inland urban areas, either because of the contrast with surrounding agricultural rural areas or when there is a contrast between prairie and wooded areas. Under supportive synoptic conditions the developed vertical velocities may trigger convective clouds. The features of the induced vertical velocity may a...

We examine the small-scale dynamics of black hole accretion disks in which radiation pressure exceeds gas pressure. Local patches of disk are modeled by numerically integrating the equations of radiation MHD in the flux-limited diffusion approximation. The shearing-box approximation is used, and the vertical component of gravity is neglected. Magneto-rotational instability (MRI) leads to turbul...