Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 14 of 14 for “"frictional sliding"”.
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Spatiotemporal evolution of seismic and aseismic frictional sliding with bulk plasticity
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2024-09-16 without embargo terms
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Micro and nano mechanics of materials response during instrumented frictional sliding
… have investigated quantitative aspects of frictional sliding contact in the elasto-plastic regime. In this thesis, a new framework was developed to establish relationships between the frictional sliding response, material properties and contact parameters. Dimensional analysis enabled to …
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Investigation of Processing Conditions and Viscoelastic Properties on Frictional Sliding Behavior of Unidirectional Carbon Fiber Epoxy Prepreg
… the forming tool and surface of the laminate. Frictional measurements of composites can vary widely depending on processing parameters, measurement technique, and instruments used. In this study, a commercial rheometer was used to evaluate tool-ply friction of unidirectional carbon fiber epoxy …
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Effect of nano-scale twinning on the fracture, fatigue and wear properties of copper
… contact fatigue response of nano twinned copper, frictional sliding experiments were performed with a conical diamond indenter. The effects of twin density and number of repetitions of sliding cycles on the evolution of frictional coefficient and material pile up around the diamond indenter were …
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Effect of Micro-Particle Additions on Frictional Energy Dissipation and Strength of Concrete
… loading. Correlations between microscopic (frictional sliding of mesocracks) and macroscopic (energy dissipation) properties are investigated. The second part focuses on the description of a series of uniaxial cyclic tests on concrete and concrete-like materials performed in the "Rock …
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Kinematics and Kinetics of Granular Mixture: Experimental and Numerical Studies
… major dissipation of energy is found to be frictional sliding. Additionally, the distribution of forces in the solid-like bulk and the fluid-like flow are investigated for different mixtures---for all cases, the probability distribution function of the forces decays exponentially, though the …
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Fatigue crack growth in polycrystalline alumina at high temperatures
… crack was found to advance in shear by the frictional sliding of grains on alternating sets of planes of the maximum shear. Evidence of shear-driven crack growth was supported by topological and morphological analyses of cyclic fatigue crack surface; grain sliding; frictional debris; and …
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Dynamics of sliding mechanisms in nanoscale friction
… inappropriate due to the small dimensions of the sliding elements and the lack of excessive plastic deformation. This thesis presents a theoretical investigation of friction at the sliding interface by Molecular Dynamics (MD) simulations of ideal Lennard-Jones solids. The effect of the interfacial …
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Localization instability and the origin of regularly-spaced faults in planetary lithospheres
… I show that a material deforming brittly or by frictional sliding has ne < 0. Localization by shear heating or grain size feedback in the ductile field requires significant deviations from non-localized deformation conditions. The buckling analysis idealizes the lithosphere as a series of …
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Effects of fault failure parameterization and bulk rheology on earthquake rupture
… nucleation and propagation. These processes are frictional sliding along faults of different roughness, fracturing of the intact rock sections connecting the preexisting planes of weakness (fault step overs) or cemented fault segments, fault branching and "wing-crack" formation, inelastic …
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An efficient finite element method for embedded interface problems
… extend this approach to handle non-linear,frictional sliding constraints at the interface. The naturally non-symmetric nature of these problems motivates us to omit the symmetry term arising in Nitsche’s method.We contrast the performance of the proposed approach with the more commonly used …
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3d rheological modelling in the aegean region and its importance for the seismotectonics of the area
… mechanisms have been considered, namely the frictional sliding and the power-law creep representing, respectively, the brittle and the ductile behaviours. Literature data have been collected in order to define the proper range of values for most of the input parameters in the rheological …
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Multiscale Peridynamics Analysis of Nanocomposites and Energetic Materials Using Nonlocal and Local Interface Models
… to reflect differences in opening mode and frictional sliding behaviors.
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Mechanical behavior of nonwoven felts
… began by interbundle bond fracture followed by frictional sliding between bundles, leading to the localization of damage in a wide band. The mechanical behavior of the non-woven felt until final fracture was modeled by the finite element simulation of a 2D random network in which the geometric …