Results 11 to 20 of about 216 (120)
Micromechanics of shear banding [PDF]
Mechanics of Materials, 1994 Abstract Shear-banding is one of many instabilities observed during the plastic flow of solids. It is a consequence of the dislocation mechanism which makes plastic flow fundamentally inhomogeneous, and is exacerbated by local adiabatic heating.
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Fluids, 2019 In this work, we examine the shear-banding flow in polymer-like micellar solutions with the generalized Bautista-Manero-Puig (BMP) model. The couplings between flow, structural parameters, and diffusion naturally arise in this model, derived from the ...
J. Paulo García-Sandoval +3 more
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Grain-subdivision-dominated microstructure evolution in shear bands at high rates
Materials Research Letters, 2020 Shear banding is an important deformation and failure mechanism in metallic systems, especially at high-rate straining. Dynamic recrystallization was often reported to account for the refined microstructure of shear bands but rarely confirmed using ...
Xiaolong Ma +4 more
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Modelling the Shear Banding in Gradient Nano-Grained Metals
Nanomaterials, 2021 Extensive experiments have shown that gradient nano-grained metals have outstanding synergy of strength and ductility. However, the deformation mechanisms of gradient metals are still not fully understood due to their complicated gradient microstructure.
Tianyu Chen, Jianjun Li
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A Comparison of Plasticity Regularization Approaches for Geodynamic Modeling
Geochemistry, Geophysics, Geosystems, 2023 The emergence, geometry and activation of faults are intrinsically linked to frictional rheology. The latter is thus a central element in geodynamic simulations which aim at modeling the generation and evolution of fault zones and plate boundaries ...
Thibault Duretz +3 more
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Interface Instability in Shear-Banding Flow [PDF]
Physical Review Letters, 2006 We report on the spatio-temporal dynamics of the interface in shear-banding flow of a wormlike micellar system (cetyltrimethylammonium bromide and sodium nitrate in water) during a start-up experiment. Using the scattering properties of the induced structures, we demonstrate the existence of an instability of the interface between bands along the ...
Lerouge, Sandra +2 more
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Shear Banding in a Contact Problem between Metallic Glasses
Metals, 2021 The case of a frictionless contact between a spherical body and a flat metallic glass is studied using a mesoscopic description of plasticity combined with a semi-analytical description of the elastic deformation in a contact geometry (code ISAAC ...
Anne Tanguy +3 more
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Nature of ductile shear banding under shock loading
Micro & Nano Letters, 2021 Under shock loading, the plastic flow of polycrystalline material tends to localise into shear bands. As shear bands form, most materials dramatically lose their strain hardening property and quickly fail.
Feng Zhao
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Morphology of Anisotropic Banded Structures in an Emulsion under Simple Shear
Fluids, 2023 The formation of flow-induced, oriented structures in two-phase systems, as in this study, is a phenomenon of considerable interest to the scientific and industrial sectors.
Jairo Eduardo Leiva Mateus +3 more
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SHEAR BAND OBSERVATIONS AND DERIVATIONS OF REQUIREMENTS FOR A SHEAR BAND MODEL
Le Journal de Physique Colloques, 1985 Observations of shear banding in fragmenting cylinders and in dynamic punch tests were analyzed for guidance in development of a theoretical model. The fragmenting cylinder tests led to a micro-mechanical model containing nucleation and growth processes for micro shear bands.
Seaman, L. +4 more
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