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 paper, a finite-volume procedure is used to compare the performance of the k-epsilon eddy-viscosity model with that of a Reynolds-stress transport closure, and it is shown that the former returns a seriously excessive level of turbulent diffusion and misrepresents the experimentally observed flow characteristics.
Abstract: The ability of a turbulence model to capture the interaction between swirl and the turbulent stress field is, therefore, crucial to the predictive performance of the computatinal scheme as a whole. A finite-volume procedure is used here to contrast the performance of the k-epsilon eddy-viscosity model with that of a Reynolds-stress transport closure. It is shown that the former returns a seriously excessive level of turbulent diffusion and misrepresents the experimentally observed flow characteristics. In contrast, the Reynolds-stress model successfully captures the subcritical nature of the flow by returning significantly lower levels of the shear stress components and predicts velocity and turbulence fields that are in good agreement with corresponding measurements. 22 references.
143 citations
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TL;DR: In this paper, the stiffness reduction as a result of multiple transverse cracking in cross-ply laminates and the crack density dependence on the applied tensile stress are analyzed by linear elastic fracture mechanics.
Abstract: The stiffness reduction as a result of multiple transverse cracking in cross-ply laminates and the crack density dependence on the applied tensile stress are analyzed by linear elastic fracture mechanics. The stress field distribution is obtained by the principle of minimum complementary energy. Two models are suggested which describe the non-uniform stress distribution in the thickness direction of the 0° layer. They contain the variational approach presented by Hashin as a particular case. Elastic ply properties and the Mode I critical strain energy release rate GIc for transverse cracking are the experimental data needed. Model predictions are compared with experimental data for glass fiber/epoxy, AS4/3502, and AS/3501-06 carbon fiber/epoxy cross-ply laminates. The predictions from the suggested models describe both the constraint effect and the crack saturation phenomenon.
143 citations
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TL;DR: In this article, the authors show that the joint pattern can reflect perturbations of the regional stress field around faults and that the corresponding joints converge at these points and are sub-parallel to the fault along the remainder of the fault plane.
143 citations
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TL;DR: In this article, simulated nanoindentation tests on a three-dimensional model of a binary metallic glass-forming alloy reveal how the stress field and material structure interact to control deformation beneath the indenter.
143 citations
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TL;DR: In this article, the variations of the amplitude of the stress field, the triaxiality of stress and the crack tip opening displacement against the Triaxial stress constraint T = are analyzed in detail based on the work of Part I and Part II of this study.
142 citations