scholarly journals Method of local element splittings for diffusion terms discretization in edge-bases schemes

2020 ◽  
pp. 1-43
Author(s):  
Pavel Alexeevisch Bakhvalov
Keyword(s):  
Local Element

scholarly journals The development of local self-management as a factor of the horizontal self-organization of a society

2008 ◽  
Vol 26 (3) ◽  
pp. 124-131
Author(s):  
V. Ya. Zymohliad ◽  
Keyword(s):  
Civil Society ◽  
Self Organization ◽  
Self Management ◽  
Local Element ◽  
Methodological Aspects

The theoretical and methodological aspects of formation and development of civic self-organization of Ukrainian community and civil society, factors, elements, segments and structures of its formation are analyzed in the paper. The formation and development of the local element of civil society are considered.

Performance of Structural Blast Mitigation Measure for Oil and Gas Industrial Facilities

2019 ◽  
Vol 812 ◽  
pp. 92-99 ◽  
Author(s):  
Damjan Cekerevac ◽  
Constanca Rigueiro ◽  
Eduardo Pereira
Keyword(s):  
Finite Element Modelling ◽  
Oil And Gas ◽  
Traditional Approach ◽  
Industrial Facilities ◽  
Stiffened Panels ◽  
Local Element ◽  
Blast Response ◽  
Alternative Materials ◽  
Reaction Forces ◽  
Blast Pulse

The response of the bulkhead type of blast wall under deflagration blast pulse was studied using finite element modelling software. The behavior of unstiffened and stiffened panels was analyzed. The study aimed at determining the effect of plate and stiffener thicknesses on energy dissipation and distribution of reaction forces. This was carried out in order to optimize the response of the primary steelwork through typological and geometrical modifications of the local element. Furthermore, novel strategies for the improvement of the blast response were introduced with a focus to use alternative materials and innovative connections. The latter was assessed numerically using a simplified model and its benefits were analyzed by comparing with the traditional approach.

Stability and Bifurcation Analysis of a Rotating Beam Substructured Model

2009 ◽  
Author(s):  
Daniel Garci´a Vallejo ◽  
Juan S. Valverde Garci´a
Keyword(s):  
Angular Velocity ◽  
Absolute Nodal Coordinate Formulation ◽  
Reference Conditions ◽  
Nonlinear Effects ◽  
Velocity Analysis ◽  
Rotating Beam ◽  
Absolute Nodal Coordinate ◽  
Coriolis Forces ◽  
Local Element ◽  
The Absolute

One of the most well-known situations in which nonlinear effects must be taken into account to obtain realistic results is the rotating beam problem. This problem has been extensively studied in the literature and has even become a benchmark problem for the validation of nonlinear formulations. The substructuring technique was proven to be a valid strategy to account for this problem. The earliest developments of the absolute nodal coordinate formulation were focused on the use of a substructured schem, in which each element uses a local element frame for the elastic force implementation. Later on, the similarities between the absolute nodal coordinate formulation and the substructuring technique were demonstrated in the literature. In a recent study of the rotating beam, it was found the existence of a critical angular velocity, beyond which the system becomes unstable, that was dependent on the number of substructures. Since the dependence of the critical velocity was not so far clear, this paper tries to shed some light on it. Moreover, previous studies were focused on a constant angular velocity analysis where the effects of Coriolis forces were neglected. In this paper, the influence of the Coriolis force term is not neglected. The influence of the reference conditions of the element frame are also investigated in this paper.

Segmentation and selection contribute to local processing in hierarchical analysis

2002 ◽  
Vol 55 (1) ◽  
pp. 5-21 ◽  
Author(s):  
Shihui Han ◽  
Glyn W. Humphreys
Keyword(s):  
Attention Task ◽  
Local Responses ◽  
Attentional Control Settings ◽  
Local Element ◽  
Selection Processes ◽  
Hierarchical Stimuli ◽  
Divided Attention Task ◽  
Local Interference ◽  
Global And Local

The present study examined the role of segmentation and selection processes when we respond to local elements in hierarchical stimuli. The ease of segmentation and selection of an individual local element from hierarchical patterns was manipulated by making one local element substantially distinct from the others in colour. Experiment 1 showed that, when attention was spread across the global and local levels in a divided attention task, the introduction of the local red element speeded responses to local targets but slowed responses when targets appeared at the global level. Experiment 2 used a selective attention task in which subjects responded only to the local or the global shapes across a block of trials. Under these circumstances, the local red element reduced global-to-local interference in addition to speeding local responses. The results suggest that the efficiency with which local elements are segmented and selected affects responses to local aspects of hierarchical patterns; furthermore, the effect of local pop-out on global processing is contingent on top-down attentional control settings.

Revealing hidden features of a Japanese articulated iron lobster via non-destructive local element analysis and 3D imaging

2021 ◽  
Author(s):  
László Szentmiklósi ◽  
Zoltán Kis ◽  
Manako Tanaka ◽  
Boglárka Maróti ◽  
Masato Hoshino ◽  
...  
Keyword(s):  
Activation Analysis ◽  
3D Imaging ◽  
Prompt Gamma Activation Analysis ◽  
Neutron Imaging ◽  
Prompt Gamma ◽  
Gamma Activation ◽  
Element Analysis ◽  
X Ray ◽  
Local Element ◽  
Non Destructive

We present a workflow to non-destructively determine the elemental compositions of internal volumes of interest enclosed within complex-shaped objects, by combining 3D X-ray or neutron imaging, prompt-gamma activation analysis, and...

A simple and efficient method for introducing faults into finite element computations

1981 ◽  
Vol 71 (5) ◽  
pp. 1391-1400
Author(s):  
H. J. Melosh ◽  
A. Raefsky
Keyword(s):  
Finite Element ◽  
Stiffness Matrix ◽  
Degrees Of Freedom ◽  
Displacement Discontinuity ◽  
Element Level ◽  
Single Node ◽  
Node Point ◽  
Local Element ◽  
Great Utility ◽  
Load Vector

abstract This paper outlines a new method, the “split node technique” for introducing fault displacements into finite element numerical computations. The value of the displacement at a single node point shared between two elements depends upon which element it is referred to, thus introducing a displacement discontinuity between the two elements. We show that the modification induced by this splitting can be contained in the load vector, so that the stiffness matrix is not altered. The number of degrees of freedom is not increased by splitting. This method can be implemented entirely on the local element level, and we show rigorously that no net forces or moments are induced on the finite element grid when isoparametric elements are used. This method is thus of great utility in many geological and engineering applications.

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