Generalized plane strain study of rotational autofrettage of thick-walled cylinders-Part II: Numerical evaluation

S. M. Kamal, M. Perl

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

The theoretical modeling of the rotational autofrettage of a thick-walled cylinder based on the generalized plane strain assumption has been presented in part I of the paper. In order to access the potentiality of the proposed theoretical model, the numerical evaluation of the analytical solutions is important. This part of the paper presents numerical evaluation of the generalized plane strain model for typical thick-walled cylinders. The residual hoop stress generated in the rotational autofrettage of a typical gun barrel is compared with the residual hoop stresses in the conventional hydraulic and swage autofrettage processes. Comparison shows that the rotationally autofrettaged gun barrel is capable of producing the same level of compressive residual hoop stress at the inner surface as that of the hydraulic autofrettage. In order to corroborate the analytical solution, a three-dimensional finite element method (3D FEM) analysis of the rotational process is carried out in ANSYS finite element package and the results are compared with the theoretical results. The comparison shows a good matching of the results between the theoretical evaluation and the 3D FEM analysis. Finally, a short feasibility analysis of the rotational autofrettage process of typical cylinders is carried out for the practical realization of the process.

Original languageEnglish
Article number051202
Number of pages7
JournalJournal of Pressure Vessel Technology, Transactions of the ASME
Volume141
Issue number5
DOIs
StatePublished - 1 Oct 2019

Keywords

  • angular velocity
  • residual stress
  • rotational autofrettage
  • thick-walled cylinder
  • three-dimensional finite element method

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Mechanics of Materials
  • Mechanical Engineering

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