Elastic stress concentration at radial crossholes in pressurised thick cylinders

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Abstract

Results of a parametric finite element analysis investigation of stress concentration at radial crossholes in pressurized cylinders are presented in numerical and graphical form. The analysis shows that the location of maximum stress does not generally occur at the junction between the bores, as is commonly supposed, but at some small distance up the crosshole from the junction. Maximum stress concentration factors (SCFs) are defined on the basis of the maximum principal stress, von Mises equivalent stress, and stress intensity. Three-dimensional plots of the SCF against the cylinder radius ratio b/a and the crosshole-to-main-bore-radius ratio c/a are presented. The SCFs were found to vary across the range of geometries considered with local minima identified within the parameter range in most cases. The results therefore allow designers to select optimum b/a and c/a ratios to minimize stress concentration in real problems.
LanguageEnglish
Pages461-468
Number of pages7
JournalJournal of Strain Analysis for Engineering Design
Volume42
Issue number6
DOIs
Publication statusPublished - 14 Mar 2007

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Stress Concentration
Stress Concentration Factor
Stress concentration
Radius
Local Minima
Range of data
Vary
Finite Element
Minimise
Three-dimensional
Finite element method
Geometry

Keywords

  • stress concentration factor
  • thick pressure vessels
  • crossholes

Cite this

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title = "Elastic stress concentration at radial crossholes in pressurised thick cylinders",
abstract = "Results of a parametric finite element analysis investigation of stress concentration at radial crossholes in pressurized cylinders are presented in numerical and graphical form. The analysis shows that the location of maximum stress does not generally occur at the junction between the bores, as is commonly supposed, but at some small distance up the crosshole from the junction. Maximum stress concentration factors (SCFs) are defined on the basis of the maximum principal stress, von Mises equivalent stress, and stress intensity. Three-dimensional plots of the SCF against the cylinder radius ratio b/a and the crosshole-to-main-bore-radius ratio c/a are presented. The SCFs were found to vary across the range of geometries considered with local minima identified within the parameter range in most cases. The results therefore allow designers to select optimum b/a and c/a ratios to minimize stress concentration in real problems.",
keywords = "stress concentration factor, thick pressure vessels, crossholes",
author = "T. Comlekci and D. Mackenzie and R. Hamilton and J. Wood",
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TY - JOUR

T1 - Elastic stress concentration at radial crossholes in pressurised thick cylinders

AU - Comlekci, T.

AU - Mackenzie, D.

AU - Hamilton, R.

AU - Wood, J.

PY - 2007/3/14

Y1 - 2007/3/14

N2 - Results of a parametric finite element analysis investigation of stress concentration at radial crossholes in pressurized cylinders are presented in numerical and graphical form. The analysis shows that the location of maximum stress does not generally occur at the junction between the bores, as is commonly supposed, but at some small distance up the crosshole from the junction. Maximum stress concentration factors (SCFs) are defined on the basis of the maximum principal stress, von Mises equivalent stress, and stress intensity. Three-dimensional plots of the SCF against the cylinder radius ratio b/a and the crosshole-to-main-bore-radius ratio c/a are presented. The SCFs were found to vary across the range of geometries considered with local minima identified within the parameter range in most cases. The results therefore allow designers to select optimum b/a and c/a ratios to minimize stress concentration in real problems.

AB - Results of a parametric finite element analysis investigation of stress concentration at radial crossholes in pressurized cylinders are presented in numerical and graphical form. The analysis shows that the location of maximum stress does not generally occur at the junction between the bores, as is commonly supposed, but at some small distance up the crosshole from the junction. Maximum stress concentration factors (SCFs) are defined on the basis of the maximum principal stress, von Mises equivalent stress, and stress intensity. Three-dimensional plots of the SCF against the cylinder radius ratio b/a and the crosshole-to-main-bore-radius ratio c/a are presented. The SCFs were found to vary across the range of geometries considered with local minima identified within the parameter range in most cases. The results therefore allow designers to select optimum b/a and c/a ratios to minimize stress concentration in real problems.

KW - stress concentration factor

KW - thick pressure vessels

KW - crossholes

UR - http://dx.doi.org/10.1243/03093247JSA251

U2 - 10.1243/03093247JSA251

DO - 10.1243/03093247JSA251

M3 - Article

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JO - Journal of Strain Analysis for Engineering Design

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