Dislocations in an arbitrary angle wedge. Part I: The dislocation kernel

2021 ◽  
pp. 030932472110425
Author(s):  
Daniel J Riddoch ◽  
David A Hills
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Edge Dislocation ◽  
Mellin Transform ◽  
The State ◽  
Arbitrary Angle ◽  
Free Surfaces ◽  
State Of Stress ◽  
Arbitrary Position ◽  
Internal Angle

We consider the state of stress created by the presence of an edge dislocation at an arbitrary position, in a wedge of arbitrary internal angle. A method for determining the state of stress in the wedge is demonstrarted and verified against finite element method simulations. Furthermore, a Mellin transform is employed to ensure that the free surfaces of the wedge remain traction free along their length.

Stress Field due to a Dislocation on the Interface Between Two Quarter Planes

1993 ◽  
Vol 60 (3) ◽  
pp. 743-748 ◽  
Author(s):  
P. Kelly ◽  
D. A. Hills ◽  
D. Nowell
Keyword(s):  
Stress Field ◽  
Edge Dislocation ◽  
Arbitrary Point ◽  
The State ◽  
Free Surfaces ◽  
State Of Stress ◽  
Asymptotic Expressions

Solutions are found for the state of stress obtaining along the interface between two bonded quarter planes, induced by an edge dislocation located at an arbitrary point on the interface. Explicit asymptotic expressions are given for the stress at points close to the free surfaces.

High-Pressure Pipelines Repaired by Steel Sleeve and Epoxy Composition

2013 ◽  
Vol 486 ◽  
pp. 181-188 ◽  
Author(s):  
Pavol Novák ◽  
Milan Žmindák ◽  
Zoran Pelagić
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
High Pressure ◽  
Material Properties ◽  
Welded Joint ◽  
Experimental Measurements ◽  
Filling Material ◽  
Epoxy Composition ◽  
State Of Stress ◽  
Steel Sleeve

The aim of this paper is first to determine the state of stress of welded joint repaired by steel sleeve and epoxy composition. Experimental measurements are performed on samples to determine required material properties. The structural analysis by finite element method (FEM) is performed for a pressurized pipe with insufficiently welded root and installed cold sleeve. Simulated is the case of depressurized pipes that could cause a breach of cohesion between filling material and surface of pipe or sleeve with usage of cohesive finite elements. In the end the sleeve dimensions are optimized with respect to maximum integrity to the repaired sleeve.

scholarly journals Research of Maximum Stress Zones in Circular Plates with Loades Concentrated Force

2020 ◽  
Vol 70 (2) ◽  
pp. 77-90
Author(s):  
Konieczny Mateusz ◽  
Achtelik Henryk ◽  
Gasiak Grzegorz
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Stress Concentration ◽  
Maximum Stress ◽  
Perforated Plate ◽  
Chemical Equipment ◽  
Circular Plates ◽  
The Finite Element Method ◽  
Concentrated Force ◽  
State Of Stress

AbstractThe paper presents numerical and experimental analysis of the state of stress in a circular perforated plate, free supported or fixed on entire premier and loaded concentrated force. This type of plate have found applications in the field of chemical equipment, pressure tanks and box conveyors. The use of the finite element method for numerical calculations enables accurate location of stress concentration zones in a perforated plate and allows to determine stress values around these hole.

scholarly journals Degradation of the State of a Ball Track at the ZP 6600

2017 ◽  
Vol 25 (1) ◽  
pp. 68-75
Author(s):  
Petr Klouda ◽  
Vlastimil Moni ◽  
Jan Blata ◽  
Lubomír Donát ◽  
František Helebrant
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Computation ◽  
The State ◽  
Mining Machine ◽  
Bottom Part ◽  
Element Method

Abstract The article deals with the examination of the state of the ball track of the heavy mining machine ZP6600/Z79. It gives results of material exams which were taken on given samples and describes the progress and results of the numerical computation of the state of tenseness by finite element method of the bottom part of the ball track when it touches the ball.

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