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: A numerical model for the blood flow in the human carotid artery bifurcation has been developed and the comparison of the results for a rigid and a distensible wall model demonstrates quantitative influence of the vessel wall motion.
518 citations
TL;DR: In this paper, the Coulomb-Mohr theory of shear failure is used to rationalize the sequence of faults and three-dimensional geometry of wrench failure. But the model is not suitable for the case of a large number of shears.
503 citations
TL;DR: In this paper, the authors revisited the maximum tensile stress (MTS) criterion to predict brittle fracture of polymethylmethacrylate (PMMA) using angled cracked plates.
Abstract: The purpose of this paper is to revisit the maximum tensile stress (MTS) criterion to predict brittle fracture for mixed mode conditions. Earlier experimental results for brittle fracture of polymethylmethacrylate (PMMA) using angled cracked plates are also re-examined. The role of the T-stress in brittle fracture for linear elastic materials is emphasized. The generalized MTS criterion is described in terms of mode I and II stress intensity factors, K I and K II and the T-stress (the stress parallel to the crack), and a fracture process zone, r c . The generalized MTS criterion is then compared with the earlier experimental results for PMMA subjected to mixed mode conditions. It is shown that brittle fracture can be controlled by a combination of singular stresses (characterized by K) or non-singular stress (T-stress). The T-stress is also shown to have an influence on brittle fracture when the singular stress field is a result of mode II loading.
501 citations
TL;DR: In this paper, the influence of the electrical fields on the fracture behavior of piezoelectric materials was investigated using distributed dislocations and electric dipoles to calculate the electro-elastic fields and the energy-release rate for a finite crack embedded in an infinite piezelectric medium which is subjected to both mechanical and electric loads.
Abstract: The concepts of linear elastic fracture mechanics, generalized to treat piezoelectric effects, are employed to study the influence of the electrical fields on the fracture behavior of piezoelectric materials The method of distributed dislocations and electric dipoles, already existing in the literature, is used to calculate the electro-elastic fields and the energy-release rate for a finite crack embedded in an infinite piezoelectric medium which is subjected to both mechanical and electric loads The energy-release rate expressions show that the electric fields generally tend to slow the crack growth It is shown that the stress intensity factor criterion and the energy-release rate criterion differ when the energetics of the electric field is taken into account The study of crack tip singular stress field yields a possible explanation for experimentally observed crack skewing in the presence of a strong electric field
499 citations
TL;DR: In this article, Babcock et al. showed that hole elongation occurs in siltstones, sandstones, limestones, dolomites and one shale formation, and through the stratigraphic column from Devonian to Cretaceous.
496 citations