On Ductile Damage Modelling of Heterogeneous Material Using Second-Order Homogenization Approach

Reduced-order modelling numerical homogenization.

A general framework to combine numerical homogenization and reduced-order modelling techniques for partial differential equations (PDEs) with multiple scales is described. Numerical homogenization methods are usually efficient to approximate the effective solution of PDEs with multiple scales. However, classical numerical homogenization techniques require the numerical solution of a large numbe...

Damage identification of structures using second-order approximation of Neumann series expansion

In this paper, a novel approach proposed for structural damage detection from limited number of sensors using extreme learning machine (ELM). As the number of sensors used to measure modal data is normally limited and usually are less than the number of DOFs in the finite element model, the model reduction approach should be used to match with incomplete measured mode shapes. The second-order a...

A second gradient material resulting from the homogenization of an heterogeneous linear elastic medium

Modelling the Heterogeneous Price Setting Behavior of Firms (DSGE Approach)

Despite the empirical evidence of the difference in the degree of price stickiness of goods and services, in the new standard Keynesian models, the same price stickiness is considered for all firms producing intermediate goods. In recent years, a new generation of pricing models has been introduced to simulate the heterogeneous price setting behavior in which, unlike standard pricing models, th...

Multi-scale Modelling for Studying Ductile Damage of Free

Abstract: This paper builds upon previous studies (Farrugia, 2006, 2008) for developing a more physical approach to predict the mechanisms of high temperature ductile damage acting at surface/sub-surface and across the length scale of continuously cast free cutting steel billet feedstock. A methodology combining mechanical testing and modelling has been developed to account for local microstruc...