scholarly journals On the singularity problem of the elastic-gravitational dislocation theory applied to plane-Earth models

2005 ◽  
Vol 32 (6) ◽  
Author(s):  
Rongjiang Wang
Keyword(s):  
Dislocation Theory ◽  
Singularity Problem ◽  
Earth Models

Dislocation theory of the elastic twinning of crystals

1971 ◽  
Vol 104 (6) ◽  
pp. 201 ◽  
Author(s):  
A.M. Kosevich ◽  
V.S. Boiko
Keyword(s):  
Dislocation Theory

MESHFREE CELL-BASED SMOOTHED POINT INTERPOLATION METHOD USING ISOPARAMETRIC PIM SHAPE FUNCTIONS AND CONDENSED RPIM SHAPE FUNCTIONS

2011 ◽  
Vol 08 (04) ◽  
pp. 705-730 ◽  
Author(s):  
G. Y. ZHANG ◽  
G. R. LIU
Keyword(s):  
Computational Efficiency ◽  
Interpolation Method ◽  
Shape Functions ◽  
Generalized Gradient ◽  
Singularity Problem ◽  
Numerical Examples ◽  
Point Interpolation Method ◽  
Point Interpolation ◽  
System Equations ◽  
Gradient Smoothing

This paper presents two novel and effective cell-based smoothed point interpolation methods (CS-PIM) using isoparametric PIM (PIM-Iso) shape functions and condensed radial PIM (RPIM-Cd) shape functions respectively. These two types of PIM shape functions can successfully overcome the singularity problem occurred in the process of creating PIM shape functions and make the constructed CS-PIM models work well with the three-node triangular meshes. Smoothed strains are obtained by performing the generalized gradient smoothing operation over each triangular background cells, because the nodal PIM shape functions can be discontinuous. The generalized smoothed Galerkin (GS-Galerkin) weakform is used to create the discretized system equations. Some numerical examples are studied to examine various properties of the present methods in terms of accuracy, convergence, and computational efficiency.

Elements of the dislocation theory and its significance in metal science

1971 ◽  
Vol 13 (4) ◽  
pp. 334-345
Author(s):  
M. M. Shteinberg ◽  
D. A. Mirzaev
Keyword(s):  
Dislocation Theory ◽  
Metal Science

Reserch of Dislocation Theory in Micro Cutting

2012 ◽  
Vol 482-484 ◽  
pp. 2033-2036
Author(s):  
Hong Jun Ding ◽  
Xi Bin Wang ◽  
Zhi Qiang Liang ◽  
Qiang Jia
Keyword(s):  
Fracture Strength ◽  
Paper Analysis ◽  
Fracture Dislocation ◽  
Dislocation Theory ◽  
Line Defect ◽  
Dislocation Mechanism ◽  
Micro Cutting ◽  
Metal Fracture ◽  
Depth Analysis

This paper analysis Griffith 's Theory and the metal theoretical fracture strength, thus introducing a line defect that existence in actual crystal — dislocation; And in-depth analysis the metal fracture dislocation mechanism in the micro cutting, and the formation and expand of the Fracture cracks , provides the theory basis for micro cutting

Inverting airborne geophysical data for mega-cell and giga-cell 3D Earth models

2012 ◽  
Vol 31 (3) ◽  
pp. 316-321 ◽  
Author(s):  
Glenn A. Wilson ◽  
Leif H. Cox ◽  
Martin Čuma ◽  
Michael S. Zhdanov
Keyword(s):  
Geophysical Data ◽  
Earth Models ◽  
Airborne Geophysical Data
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