Topic
Stress field
About: Stress field is a research topic. Over the lifetime, 11926 publications have been published within this topic receiving 226417 citations.
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TL;DR: In this article, the authors present the mathematical theory of stress and velocity fields for the steady gravity flow of bulk solids in converging channels, based on the concepts of soil mechanics and plasticity.
Abstract: This paper presents the mathematical theory of stress and velocity fields for the steady gravity flow of bulk solids in converging channels. The basic equations based on the concepts of soil mechanics and plasticity are presented along with the appropriate boundary conditions. A simplified stress field (called the “radial stress field” by Jenike), compatible with straight-walled converging channels, is shown by calculated and experimental evidence to approximate closely the physical stress fields occurring in the deforming portions of the solid in plane-strain and axisymmetric straight-walled converging channels.
100 citations
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TL;DR: In this article, the authors investigated the reasons for the superimposition of several maximum principal stress directions (σ1) in the same area, and examined the contrast between unperturbed areas (stable direction of σ1) and perturbation areas (changing σ 1 direction).
100 citations
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TL;DR: In this paper, the scaled boundary finite-element method is extended to analyze the in-plane singular stress fields at cracks and multi-material corners, where the singular functions are represented analytically and are not evaluated close to the singular point.
100 citations
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TL;DR: In this paper, the authors highlight an outer trough south of the flexural bulge in central India where surface stresses are double the contiguous compressional stresses to the north and south, and the overall flexural stress distribution provides a physical basis for earthquake hazard mapping and suggests that areas of central India with no historic earthquakes are recorded may yet be the locus of future damaging events.
Abstract: The flexural bulge in central India resulting from India's collision with Tibet has a wavelength of approximately 670 km. It is manifest topographically and in the free-air gravity anomaly and the geoid. Calculations of the stress distribution within a flexed Indian plate reveal spatial variations throughout the depth of the plate and also a function of distance from the Himalaya. The wavelength (and therefore local gradient) of stress variation is a function of the effective elastic thickness of the plate, estimates of which have been proposed to lie in the range 40–120 km. The imposition of this stress field on the northward moving Indian plate appears fundamental to explaining the current distribution of intraplate earthquakes and their mechanisms. The current study highlights an outer trough south of the flexural bulge in central India where surface stresses are double the contiguous compressional stresses to the north and south. The Bhuj, Latur and Koyna earthquakes and numerous other recent reverse faulting events occurred in this compressional setting. The N/S spatial gradient of stress exceeds 2 bars/km near the flexural bulge. The overall flexural stress distribution provides a physical basis for earthquake hazard mapping and suggests that areas of central India where no historic earthquakes are recorded may yet be the locus of future damaging events.
100 citations
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TL;DR: Geymonat et al. as discussed by the authors proposed a variational method based on the minimization of a separate convex functional which leads to the reconstruction of the elastic tensor and the stress field.
100 citations