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Showing 1 to 19 of 19 for “"Interfacial friction"”.
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Uma equação para o cálculo do atrito entre fases em escoamentos turbulentos estratificados em tubulações circulares
… there are several methods to calculate friction pressure losses in such processes. These methods involve friction factors, parameters that depend on flow conditions and fluid property. The interfacial friction factor represents the friction tension generated from the interaction between …
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Partial-interaction behaviour of composite steel-concrete bridge beams subjected to fatigue loading / by Rudolf Seracino.
Determines the effect of partial-interaction and interfacial friction on the fatigue behaviour of composite bridge beams and develops a set of design rules for the assessment of the residual strength and performance of composite bridge beams.
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Computational Study of the Effect of Interparticle Contact in Conductive Properties of Random Particulate Systems
… To represent more realistic material system, interfacial friction and gap conductance (or contact resistance) are included among the contacting particles. The Monte Carlo simulations are implemented to give a quantitative relationship between the effective conductivity and the inclusion volume …
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A Simple Numerical Model for the Study of Baroclinic Estuarine Shelf Interactions
… except at the inflow. Effects of varying interfacial friction, Newtonian cooling (vertical mixing of density or detrainment), channel configuration and wind stress were examined. The principal result was to show that Newtonian cooling rather than interfacial friction played key role in …
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Investigation of the Processing History during Additive Friction Stir Deposition using In-process Monitoring Techniques
Additive friction stir deposition (AFSD) is an emerging solid-state metal additive manufacturing technology that uses deformation bonding to create near-net shape 3D components. As a developing technology, a deeper understanding of the processing science is necessary to establish the …
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Multilayer Ionic Transducers
… is developped. It is used to model the interfacial friction in multilayer transducers. Experiments on transducers with one to three layers are performed and the results are compared to Newbury's equivalent circuit model, which was modified to accommodate the multilayer polymers. The …
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Microtribodynamics of Sub-Five Nanometers Flying Head -Disk Interfaces in Magnetic Storage
… feature of this work is the incorporation of the interfacial adhesive forces in sub-10 nm flying and contacting HDIs, and the inclusion of realistic surface roughness. Furthermore, a systematic modeling approach was established that includes system independent fundamental interfacial (friction, …
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Multiscale models for structure and dynamics of confined fluids
… we use the GLE formulation to compute the interfacial friction coefficient at solid-liquid interface. Interfacial friction coefficient is an important macroscopic modeling parameter that provides the atomistic to continuum bridge by incorporating the effect of the wall-lattice structure and …
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The influence of a steady baroclinic deep ocean on the shelf
… boundary forced models which incorporate bottom friction. One set of models, for a vertically well mixed shelf, includes the horizontal advection of density. The second set of models comprises a three-layer model without and a two-layer model with interfacial friction. It is found that near …
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Finite Element Analysis of Super Elastomer Mechanical Behavior and Failure for High Pressure Sealing Applications
… approaches to investigate the impacts of interfacial friction and packer geometry on elastomer stress/strain evolvement and deformation, and resulting effects on sealing performance. First, we found that the often-neglected friction forces between the packer and contact surfaces during …
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Micro-scale scratching by soft pad asperities in chemical-mechanical polishing
… the asperity contact pressure along with the interfacial friction that can induce surface layer yielding are first derived, for different asperity deformation modes: elastic, elastic but at the onset of yielding, elastic-plastic, and fully-plastic. Under multi-asperity sliding contact, the …
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Ultrasonic hot spots in solids
… formation in explosive crystals, void collapses, interfacial friction and triboelectric discharge. Although model calculations have suggested that interstitial regions between crystals are critical locations for hot spot generation, it is still difficult to identify specific contributions from …
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On the role of topography and of boundary forcing in the ocean circulation
… reason for this failure is twofold: on one hand friction, especially interfacial friction, tends to make the flow more barotropic (and we believe that indeed this is one of the processes that the eddies accomplish in a stratified fluid) and therefore the phenomena that rely strongly on …
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Polymer Nanocomposites: Polymer And Particle Dynamics And Its Application As Lubricant
… hybrid lubricants simultaneously exhibit lower interfacial friction coefficients, enhanced wear and mechanical properties, and superior thermal stability in comparison with either PAO or its nanocomposites created at low nanoparticle loadings. Profilometry and energy dispersive X-ray …
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Extraction of mechanical properties over a range of strain rates from indentation data
… although a parameter characterizing interfacial friction is also required. Using experimental data from (both work-hardened and annealed) copper samples, this procedure has been carried out and best-fit values of C (∼0.016 and ∼0.030) have been obtained. This procedure has been …
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Generation and maintenance of recirculations by Gulf Stream instabilities
… model has two energy states for a wide range of interfacial friction coefficients. The high energy state is characterized by well-developed recirculations and displays strong variability associated with either large recirculating gyres and a weak eddy field or small recirculations and a strong …
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Generation and maintenance of recirculations by Gulf Stream instabilities
… model has two energy states for a wide range of interfacial friction coefficients. The high energy state is characterized by well-developed recirculations and displays strong variability associated with either large recirculating gyres and a weak eddy field or small recirculations and a strong …
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Multiscale methods for transport phenomena
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2018-03-13 without embargo terms
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Simulation of aluminium extrusion process.
… The effect of the initial billet temperature on friction, and the extent of the surface zone affected by surface friction and the consequence changes in material flow were investigated. The changes in the subgrain size during quasi-static deformation were predicted. This allows a construction of …