in this paper, simulation and analysis of thin steel cylindrical shells with elliptical cutouts under oblique loading were studied using finite element method. first, the numerical results were validated by the results of experimental test performed by an instron 8802 servo hydraulic machine. also, the effect of cutout angle (θ), cutout size, cutout position (l0/l) and cutout aspect ratios (b/a...

Diagonal loading is one of the most widely used and effective methods to improve robustness both adaptive beamformers Direction Arrival (DOA) estimation due involvement sensor received covariance matrix. In addition, subspace-based DOA techniques rely on multiple snapshots achieve high accuracies. This paper presents study a modified diagonally loaded sample matrix for accurate in adverse scena...

Recently, many research activities have investigated means to cope with the exponential growth of computing power, numbers of devices, and most importantly, information. The main focus of these activities is managing the complexity and optimising resource utilisation. This thesis presents novel solutions that optimise the utilisation of distributed resources for a stable and scalable execution ...

A new hybrid adaptive neural network (ANN) with modified adaptive smoothing errors (MASE) based on genetic algorithm (GA) employing modified adaptive relaxation (MAR) are presented in this paper to construct learning system for complex problem solving in fluid dynamics. This system can predict an incompressible viscous fluid flow represents by stream function ( ) through symmetrical backwardfac...

This paper presents a new adaptive multiscale homogenization scheme for the simulation of damage and fracture in concrete structures. A two-scale homogenization method, coupling meso-scale discrete particle models to macroscale finite element models, is formulated into an adaptive framework. A continuum multiaxial failure criterion for concrete is calibrated on the basis of fine-scale simulatio...

objective: the purpose of this study was to examine the impact of early family-centered psychological and educational interventions on adaptive behaviors in children with down syndrome (ds). method: utilizing an experimental pretest-posttest control group design, parents of 36 children with ds were selected in isfahan. vineland adaptive behavior scale was used to assess adaptive behavior. resul...

Abstract Micromechanics‐based continuum damage criteria have previously been developed to simulate the initiation of ductile fracture in structural steels under conditions with large‐scale plasticity where conventional mechanics indices are invalid. Such models combined methods crack growth for monotonic loading. In this study, a micromechanics‐based adaptive cohesive zone model simulating prop...