Manual for Micro-battery Parametric Study

The emergence of new kinds of micro-technologies, e.g., MEMS (microelectromechanical systems) devices, biomedical microma- chines, remote sensors, etc., has given rise to new approaches in battery development. The additional thesis contributes part of Finite Element Analysis of microbatteries, to be specific, the trenched mirobatteries...

FEM modeling of fiber reinforced composites: The use of GFEM, the embedded reinforcement approach including bond slip and the "Interface GFEM" approach

Recently several studies have been performed at the TUDelft on the use of the generalized finite element method (GFEM) to model fiber reinforced composite materials in a two dimensional space. The GFEM model allows a large number of arbitrarily placed fibers to be taken into account. The fibers are placed on top of the ordinary mesh and...

A stress-based gradient-enhanced damage model

One of the shortcomings of nonlocal damage models with a constant length scale parameter is the wrong prediction of damage initiation and propagation in correspondence of a strongly inhomogeneous strain field. This unphysical behavior can be corrected by considering an evolving length scale which is made a function of the stress state. Giry,...

Intergranular crack propagation in brittle polycrystals using topological procedures and accurate finite element analyses

The thesis explores numerical approaches for the definition of crack paths in polycrystalline materials. Traditional approaches, such as the finite element method (FEM) or the more advanced generalized finite element method (GFEM), cannot be easily used in materials with a large number of grains due to their high computational cost. Cheaper...