Nowadays, events like severe earthquakes or man-made malicious actions are often taken into account in structural design of critical infrastructures and consequently high dynamic loads are considered in structural analyses. In particular, it is aimed to reproduce large displacements fields, dynamic fracture mechanisms (fragmentations, etc.) and high stress concentrations. Classical numerical me...

Nowadays, events like severe earthquakes or man-made malicious actions are often taken into account in structural design of critical infrastructures and consequently high dynamic loads are considered in structural analyses. Classical numerical methods, like Finite Element Method (FEM), may be inadequate to model the mechanical behavior of structural elements under such actions. In fact high def...

The Smoothed Finite Element Method (S-FEM) proposed by Liu G.R. can achieve more accurate results than the conventional FEM. Currently, much commercial software and many open-source packages have been developed to analyze various science engineering problems using However, there is little work focusing on designing developing or for S-FEM. In this paper, we design implement an package of parall...

An algebraic multigrid method with two levels is applied to the solution of the Helmholtz equation in a first order least squares formulation, discretized by Q1 finite elements with reduced integration. Smoothed plane waves in a fixed set of directions are used as coarse level basis functions. The method is used to investigate numerically the sensitivity of the scattering problem to a change of...

Localization and quantification of the light sources generated by the expression of bioluminescent reporter genes is an important task in bioluminescent imaging of small animals, especially the generically engineered mice. To employ the Monte Carlo method for the light-source identification, the surfaces that define the anatomic structures of the small experimental animal is required; to perfor...

A selective smoothed finite element method (Selective S-FEM) is developed for dynamic 3D analysis of extremely large deformation of incompressible bio-tissues, using the simplest 4-node tetrahedron elements. In the present selective S-FEM, face-based Smoothed FEM (FS-FEM) and node-based Smoothed FEM (NS-FEM) are, respectively, used for the deviatoric and volumetric parts of the deformation of i...