Results 91 to 100 of about 1,454,671 (284)

A simple model for heterogeneous flows of yield stress fluids

open access: yes, 2002
Various experiments evidence spatial heterogeneities in sheared yield stress fluids. To account for heterogeneities in the velocity gradient direction, we use a simple model corresponding to a non-monotonous local constitutive curve and study a simple ...
Ajdari, A.   +3 more
core   +2 more sources

Phase Field Failure Modeling: Brittle‐Ductile Dual‐Phase Microstructures under Compressive Loading

open access: yesAdvanced Engineering Materials, EarlyView.
The approach by Amor and the approach by Miehe and Zhang for asymmetric damage behavior in the phase field method for fracture are compared regarding their fitness for microcrack‐based failure modeling. The comparison is performed for the case of a dual‐phase microstructure with a brittle and a ductile constituent.
Jakob Huber, Jan Torgersen, Ewald Werner
wiley   +1 more source

Punching shear in concrete reinforced flat slabs with steel fibers and shear reinforcement

open access: yesRevista IBRACON de Estruturas e Materiais, 2018
Steel fibers in reinforced concrete increase the performance of slab-column connection once they increase ductility and energy absorption capacity of the concrete. The use of fibers in flat slabs may increase strength and change the mode of failure.
T. H. MUSSE   +4 more
doaj   +1 more source

Static and dynamic shear viscosity of a single layer complex plasma

open access: yes, 2011
We measured the static and dynamic (complex) shear viscosity of a single layer complex plasma by applying, respectively, a stationary and a periodically modulated shear stress induced by the light pressure of manipulating laser beams.
Donkó, Zoltán   +3 more
core   +1 more source

Affecting the Properties of Copper–Graphene Electroconductive Composite by Severe Plastic Deformation

open access: yesAdvanced Engineering Materials, EarlyView.
Copper‐based composites enhanced with carbon feature convenient mechanical properties and favorable electric conductivity. Processing via deformation and thermomechanical treatments can introduce advantageous microstructures further enhancing their performance. Herein, copper–graphene powder‐based composites are directly consolidated via rotary swaging
Radim Kocich   +3 more
wiley   +1 more source

Pacific coast pears: Production trends, utilization, export needs and price prospects

open access: yesCalifornia Agriculture, 1948
California Agriculture - All ...
S Shear, S Hoos
doaj  

Morphologies of three-dimensional shear bands in granular media

open access: yes, 2007
We present numerical results on spontaneous symmetry breaking strain localization in axisymmetric triaxial shear tests of granular materials. We simulated shear band formation using three-dimensional Distinct Element Method with spherical particles.
C. Lee   +16 more
core   +1 more source

A Topology Optimization Framework for the Inverse Design of Nonlinear Mechanical Metamaterials

open access: yesAdvanced Engineering Materials, EarlyView.
This work uses topology optimization to design unit cells for mechanical metamaterials with a prescribed nonlinear stress–strain response. The framework adds contact and postbuckling modeling to synthesize microstructures for three highly nonlinear responses, including pseudoductile behavior, monostable with snap‐through buckling, and bistable ...
Charlie Aveline   +2 more
wiley   +1 more source

Experimental investigation of the influence of internal defects (voids, wrinkles) on the shear properties of CFRP

open access: yesFracture and Structural Integrity
The study focuses on examining the impact of internal manufacturing defects (voids and wrinkles) on the mechanical behavior of structural carbon fiber reinforced polymers (CFRP) under shear loading.
Stanislav Slovikov, Dmitriy Lobanov
doaj   +1 more source

Effect of woven fabric on the shear capacity of short rc beams

open access: yesJournal of Civil Engineering and Management, 2003
Recently, externally bonded fibre-reinforced polymer (FRP) composite plate has been used successfully to enhance the performance of reinforced concrete (RC) members.
Hau-yan Leung
doaj   +1 more source

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