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 9 of 9 for “"Force chains"”.
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Interacting Stochastic Processes: from Viciousness to Caging to Force Chains
… also includes analysis of the heterogeneous force network present in amorphous solids near the onset of rigidity, or jamming. The onset of rigidity can, in some sense, be viewed an interacting stochastic process with added constraints to enforce force-balance on each particle, for example. …
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Experimentally validated DEM modelling of granular materials under simple shear testing
… stress and a more contractive response. Inclined force chains could be observed in the vertical plane that paralleled the direction of shearing. Contact fabrics tended to orient at around 45o from the horizontal direction at large strain. The change of the direction of shearing caused the …
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Actomyosin Contractility in Nonmuscle Cells
<p>Forces and stresses generated by the action of myosin minifilaments are analyzed via simulation of their motion in idealized computer-generated random, isotropic actin networks and actin bundles. The networks and bundles are generated as random collections of actin filaments in two dimensions …
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Experimental and numerical study of the rod shear test for determining steel-sand interface behavior
… following pile displacement, the existence of force chains and work with discrete element systems showing that stress distribution in dense arrays is nonuniform.
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Mesoscale Forces and Grain Motion in Granular Media Exhibiting Stick-Slip Dynamics: Effects of Friction and Grain Shape
… on grain-scale dynamics, properties of mesoscale force chains, and macroscopic stick-slip dynamics of granular materials through novel experiments. In one set of experiments, an intruder is pushed by a spring through an annular cell filled with a quasi-2D monolayer of photoelastic grains that …
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Stress Transmission in a Granular System
… new insights beyond the commonly reported force chains. The ‘stress chain’ concept is considered as an alternative way to reflect grain breakage that may initiate on the weak force network and compromise the stability of the assembly. It is thus suggested that the ‘stress chain’ concept can …
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Measurement of displacements in granular systems in response to penetration and compaction
… as porosity, initial particle arrangement and force chain formation, were investigated. Samples which were conducive to the formation of force chains spanning the whole sample were discovered to have anomalously high strengths. Small amounts of added water were shown to increase the …
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Multi-scale multiphase modelling of granular flows
… at the grain scale level, such as orientation of force chains, which are micro-structural effects. Discrete element methods (DEM) are capable of simulating these micro-structural effects, however they are computationally expensive. In the present study, a multi-scale approach is adopted, using …
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Force Chain Detection in Unconsolidated Sands
… element modeling approach to simulate the force chain network of the sand pack and predict its behavior under further stress loading. The model will allow to extract the statistics and the distribution of the stress across the calculated volume and find the regions where the probability of …