Semi-solid materials undergo strain localization and shear band formation as a result of granular nature of semi-solid deformation. In the present study, to analyze the shear localization, a unified viscoplastic constitutive model was developed for the homogeneous flow. Then, a linearized analysis of the stability performed by examining the necessary condition for the perturbation growth. For t...

Inverters are playing an increasingly important role in the electrical utility grid due to proliferation of renewable energy sources. Obtaining inverter models with accurate parameters is, therefore, essential for studies and design. In this paper, a methodology estimate output impedance residential grid-tied is proposed. The first verified through simulation. A sensitivity analysis conducted d...

Abstract In this paper, we study the existence of a class $p(x)$ p ( x ) -Kirchhoff equation involving concave-convex nonlinearities. The main tools used are perturbation technique, variational method, and priori estimation.

In this paper, Elzaki Homotopy Perturbation Method is employed for solving linear and nonlinear differential equations with a variable coffecient. This method is a combination of Elzaki transform and Homotopy Perturbation Method. The aim of using Elzaki transform is to overcome the deficiencies that mainly caused by unsatised conditions in some semi-analytical methods such as Homotopy Perturbat...

in this paper, first a new homotopy perturbation method for solving a fractional order nonlinear telegraph equation is introduced. by applying the proposed method, the nonlinear equation is translated to linear equations for per iteration of homotopy perturbation method. then, the obtained problems are solved with separation method. in the examples, it is illustrated that the exact solution is ...

Euclidean Distance Matrix Analysis (EDMA) of form is a coordinate free approach to the analysis o f form using landmark data. In this paper, the problem of estimation of mean form, variancecovariance matrix, and mean form difference under the Gaussian perturbation model is considered using EDMA. The suggested estimators are based on the method of moments. They are shown to be consistent, that i...

ALYSIS OF ESPRIT BASED JOINT ANGLE-FREQUENCY ESTIMATION A weke N. Lemma , Alle-Jan van der Veen and Ed F. Deprettere Delft University of Technology, Faculty of Information Technology Mek elweg 4, 2628 CD Delft, The Netherlands [email protected] ABSTRACT High-resolution parameter estimation techniques have recently been applied to jointly estimate multiple signal parameters. In this work,...