A microstructural model of steady-state creep that couples grain-boundary transport, micromechanics, and grain sliding is employed to investigate the grain-boundary diffusional creep response of an idealized microstructure with variable boundary diffusivities. Both numerical and analytical methods were used to determine the stress state and, in some cases, the strain rate associated with an app...

Edwin Lewis Dept Elect. Eng. U.C. Berkeley We present a simplified model of the micromechanics of the human cochlea, realized with electrical elements. Simulation of the model shows that it retains four signal processing features whose importance we argue on the basis of engineering logic and evolutionary evidence. Furthermore, just as the cochlea does, the model achieves massively parallel sig...

moving from micro-level of social capital to the macro level is essential for access to the stable benefits of this capital. the aim of this study was to design a model for the promotion of bridging social capital of football fans. this developmental research was done with mix methods. 14 experts were interviewed in targeted way and effective categories and sub categories on promotion of bridgi...

Abstract Micromechanics‐based continuum damage criteria have previously been developed to simulate the initiation of ductile fracture in structural steels under conditions with large‐scale plasticity where conventional mechanics indices are invalid. Such models combined methods crack growth for monotonic loading. In this study, a micromechanics‐based adaptive cohesive zone model simulating prop...

Strain-rate effects in a unidirectional non-crimp fabric carbon/epoxy composite are addressed. To allow for kink-band formation including strain-rate and damage such composites, the paper advances recent model focused on compression loading at small off-axis angles. The is based computational homogenization with subscale represented by matrix fibre constituents finite deformation. constituent a...

A three-dimensional micromechanics-based analytical model is developed to study thermo-mechanical properties of polymer composites reinforced with randomly distributed silica nanoparticles. Two important factors in nanocomposites modeling using micromechanical models are nanoparticle arrangement in matrix and interphase effects. In order to study these cases, representative volume element (RVE)...

A micromechanics based analysis to predict damage initiation in compressively loaded symmetric notched multiply laminates at efevated temperature under remote biaxial loading is described. The finite element method in conjunction with the commercial code ABAQUS® is used to solve the governing system of equations. The results obtained for the predictions are compared against a set of experimenta...