In this study, a technique is presented for developing constitutive models for polymer composite systems reinforced with single-walled carbon nanotubes (SWNT). Because the polymer molecules are on the same size scale as the nanotubes, the interaction at the polymer/nanotube interface is highly dependent on the local molecular structure and bonding. At these small length scales, the lattice stru...

In this study, a technique has been proposed for developing constitutive models for polymer composite systems reinforced with single-walled carbon nanotubes (SWNT). Since the polymer molecules are on the same size scale as the nanotubes, the interaction at the polymer/nanotube interface is highly dependent on the local molecular structure and bonding. At these small length scales, the lattice s...

The mechanics of biological tissue is largely determined by the mechanics of biopolymer networks such as the extracellular matrix on cellular scale or the cytoskeleton on subcellular scale. Micromechanical simulations of biopolymer networks have thus attracted increasing interest in the last years. Here we introduce a simulation framework for biopolymer networks based on a finite element model ...

Given a montmorillonite clay at high porosity and saturated by monovalent counterions, the particle level responses of the clay to different external loadings are investigated. As analytical solutions are not possible for complex arrangements of particles, computational micromechanical models are employed (based on solution of the Poisson-Nernst-Planck equations) using the finite element method...

Damping is a critical design parameter for miniaturized mechanical resonators used in microelectromechanical systems (MEMS), nanoelectromechanical systems (NEMS), optomechanical systems, and atomic force microscopy for a large and diverse set of applications ranging from sensing, timing, and signal processing to precision measurements for fundamental studies of materials science and quantum mec...

A basic assumption of Stochastic Finite Element Methods (SFEM) is that the spatial variation of uncertain structural material properties can be described by random fields. Due to the lack of measured data, SFEM researchers and users are usually forced to make assumptions regarding qualitative and quantitative characteristics for the random field representation of various material parameters inv...

The hypothesis presented in the present work is that the yield surface can be presented as a thick f̀oamed surface’ with dimensionality exceeding two, that is the yield surface is of a fractal nature. A micromechanical model of a polycrystal based on cellular automata (the cellular model) is proposed to investigate the yield surface structure. A polycrystal representative volume is modelled as a...

Given a montmorillonitic clay soil at high porosity and saturated by monovalent counterions, we investigate the particle level responses of the clay to different external loadings. As analytical solutions are not possible for complex arrangements of particles, we employ computational micromechanical models (based on the solution of the Poisson-Nernst-Planck equations) using the finite element m...

Over the past few years, microelectromechanical system (MEMS) based on-chip resonators have shown significant potential for sensing and high frequency signal processing applications. This is due to their excellent features like small size, large frequency-quality factor product, low power consumption, low cost batch fabrication, and integrability with CMOS IC technology. Radio frequency communi...

A basic assumption of Stochastic Finite Element Methods (SFEM) is that the spatial variation of uncertain structural material properties can be described by random fields. Due to the lack of measured data, SFEM researchers and users are usually forced to make assumptions regarding qualitative and quantitative characteristics for the random field representation of various material parameters inv...