A comparative study between conventional and elevated temperature creep autofrettage

Volodymyr Okorokov; Yevgen Gorash

doi:10.1016/j.prostr.2017.07.110

A comparative study between conventional and elevated temperature creep autofrettage

Volodymyr Okorokov, Yevgen Gorash

Mechanical And Aerospace Engineering

Research output: Contribution to journal › Conference Contribution › peer-review

1 Citation (Scopus)

44 Downloads (Pure)

Abstract

This paper presents a comparative study between conventional hydraulic and elevated temperature autofrettage. For modelling of both methods advanced plasticity and creep material models are used. The main governing equations for the models are presented as well. A beneficial influence of compressive residual stresses induced by both methods is demonstrated on a benchmark problem of cross bored block. The effectiveness and applicability of the two methods are estimated by conduction of compressive residual stress analysis and crack arrest modeling. Numerical simulation of the cyclic plasticity and creep problems are carried out by means of FEM in ANSYS Workbench with FORTRAN user-programmable subroutines for material model incorporating custom equations.

Original language	English
Pages (from-to)	202-209
Number of pages	8
Journal	Procedia Structural Integrity
Volume	5
DOIs	https://doi.org/10.1016/j.prostr.2017.07.110
Publication status	Published - 6 Sept 2017

Keywords

crack arrest
creep autofrettage
finite analysis
plasticity
compressive residual stress

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10.1016/j.prostr.2017.07.110Licence: CC BY-NC-ND 4.0

Okorokov-Gorash-PSI-2017-A-comparative-study-between-conventional-and-elevated-temperature-creep-autofrettageFinal published version, 1.2 MBLicence: CC BY-NC-ND 4.0

1 Finished

APESA (H2020 MSCA EID)
MacKenzie, D. (Principal Investigator), Comlekci, T. (Co-investigator), Dempster, W. (Co-investigator), Galloway, A. (Co-investigator), Stack, M. (Co-investigator), Stickland, M. (Co-investigator) & Thomason, J. (Co-investigator)
European Commission - Horizon Europe + H2020
1/06/15 → 31/05/19
Project: Research

1 Citations
2 Article

New formulation of nonlinear kinematic hardening model, part I: a Dirac delta function approach
Okorokov, V., Gorash, Y., MacKenzie, D. & van Rijswick , R., 30 Nov 2019, In: International Journal of Plasticity. 122, p. 89-114 26 p.
Research output: Contribution to journal › Article › peer-review

Open Access
File
18 Citations (Scopus)

722 Downloads (Pure)
New formulation of nonlinear kinematic hardening model, part II: cyclic hardening/softening and ratcheting
Okorokov, V., Gorash, Y., MacKenzie, D. & van Rijswick , R., 30 Nov 2019, In: International Journal of Plasticity. 122, p. 244-257 14 p.
Research output: Contribution to journal › Article › peer-review

Open Access
File
24 Citations (Scopus)

210 Downloads (Pure)

Cite this

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title = "A comparative study between conventional and elevated temperature creep autofrettage",

abstract = "This paper presents a comparative study between conventional hydraulic and elevated temperature autofrettage. For modelling of both methods advanced plasticity and creep material models are used. The main governing equations for the models are presented as well. A beneficial influence of compressive residual stresses induced by both methods is demonstrated on a benchmark problem of cross bored block. The effectiveness and applicability of the two methods are estimated by conduction of compressive residual stress analysis and crack arrest modeling. Numerical simulation of the cyclic plasticity and creep problems are carried out by means of FEM in ANSYS Workbench with FORTRAN user-programmable subroutines for material model incorporating custom equations.",

keywords = "crack arrest, creep autofrettage, finite analysis, plasticity, compressive residual stress",

author = "Volodymyr Okorokov and Yevgen Gorash",

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doi = "10.1016/j.prostr.2017.07.110",

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T1 - A comparative study between conventional and elevated temperature creep autofrettage

AU - Okorokov, Volodymyr

AU - Gorash, Yevgen

PY - 2017/9/6

Y1 - 2017/9/6

N2 - This paper presents a comparative study between conventional hydraulic and elevated temperature autofrettage. For modelling of both methods advanced plasticity and creep material models are used. The main governing equations for the models are presented as well. A beneficial influence of compressive residual stresses induced by both methods is demonstrated on a benchmark problem of cross bored block. The effectiveness and applicability of the two methods are estimated by conduction of compressive residual stress analysis and crack arrest modeling. Numerical simulation of the cyclic plasticity and creep problems are carried out by means of FEM in ANSYS Workbench with FORTRAN user-programmable subroutines for material model incorporating custom equations.

AB - This paper presents a comparative study between conventional hydraulic and elevated temperature autofrettage. For modelling of both methods advanced plasticity and creep material models are used. The main governing equations for the models are presented as well. A beneficial influence of compressive residual stresses induced by both methods is demonstrated on a benchmark problem of cross bored block. The effectiveness and applicability of the two methods are estimated by conduction of compressive residual stress analysis and crack arrest modeling. Numerical simulation of the cyclic plasticity and creep problems are carried out by means of FEM in ANSYS Workbench with FORTRAN user-programmable subroutines for material model incorporating custom equations.

KW - crack arrest

KW - creep autofrettage

KW - finite analysis

KW - plasticity

KW - compressive residual stress

U2 - 10.1016/j.prostr.2017.07.110

DO - 10.1016/j.prostr.2017.07.110

M3 - Conference Contribution

SN - 2452-3216

VL - 5

SP - 202

EP - 209

JO - Procedia Structural Integrity

JF - Procedia Structural Integrity

ER -

A comparative study between conventional and elevated temperature creep autofrettage

Abstract

Keywords

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Projects

APESA (H2020 MSCA EID)

Research output

New formulation of nonlinear kinematic hardening model, part I: a Dirac delta function approach

New formulation of nonlinear kinematic hardening model, part II: cyclic hardening/softening and ratcheting

Cite this