A coupled phase field-viscoplasticity approach was developed to model the deformation and crack growth in a nickel-based superalloy under fatigue. The has an advantage predicting cyclic softening behavior of alloy caused by fatigue damage, overcoming major limitation original viscoplasticity model. is also highly effective propagation varied dwell times at peak load, important for By incorporat...

The tools of dynamical systems theory are having an increasing impact on our understanding of patterns of neural activity. In these five lectures I will describe how to build tractable tissue level models that maintain a strong link with biophysical reality. These models typically take the form of nonlinear integro-differential equations. Their non-local nature has led to the development of a s...

this paper deals with the design and evaluation of a robust controller for static var compensator (svc) in remote industrial power systems to enhance the voltage profile for three-phase single cage induction motor (scim) loads. the controller design is based on h∞ theory to deal with uncertainties arising in industrial network modelling. the performance of the h∞ controller has been evaluated e...

We present a model to describe the collective motion of barchan dunes in a field. Our model is able to reproduce the observation that a typical dune stays confined within a stripe. We also obtain some of the pattern structures which ressemble those observed from aerial photos which we do analyse and compare with the specific field of Laâyounne.

This paper discusses stochastic models applied to modelling and simulation of turbulent dispersed two-phase flows. The stochastic approach presents strong advantages compared to classical approaches which attempt to solve field equations for some statistical averages: polydispersed flows are treated naturally without specific assumptions and detailed information is provided on various particle ...

• A meso -scale phase filed model for concrete cover cracking induced by corrosion of multiple reinforcements is developed. The crack patterns and width development are obtained. developed method enables high fidelity numerical models with up to tens millions degrees freedom. Crack deflection, aggregate/mortar bridging bifurcation in have been captured the model. Corrosion-induced one major det...

Phase field modelling and thermodynamic analysis are employed to investigate depolarization and compression induced large negative and positive electrocaloric effects (ECEs) in ferroelectric tetragonal crystalline nanoparticles. The results show that double-hysteresis loops of polarization versus electric field dominate at temperatures below the Curie temperature of the ferroelectric material, ...

considering the fact that rocks fail faster under tensile stress, rock tensile strength is of greatimportance in applications such as blasting, rock fragmentation, slope stability, hydraulic fracturing,caprock integrity, and geothermal energy extraction. there are two direct and indirect methods tomeasure tensile strength. since direct methods always encompass difficulties in test setup, indire...