In recent years, a few new methods of achieving autofrettage in thick-walled hollow cylinders have been developed. Rotational autofrettage is one of the new methods proposed recently for prestressing thick-walled cylinders. The principle of rotational autofrettage is based on inducing plastic deformation in the cylinder at the inner side and at its neighborhood by rotating the cylinder about its own axis at a certain angular velocity and subsequently bringing down it to zero angular velocity. However, the analysis of the process is still in its nascent stage. In order to establish the rotational autofrettage as a potential design procedure for prestressing thick-walled cylinders, accurate modeling of the process is necessary. In this paper, the rotational autofrettage for thick-walled cylinders is analyzed theoretically based on the generalized plane strain assumption. The closed form analytical solutions of the elasto-plastic stresses and strains and the residual stresses after unloading during the rotational autofrettage of a thick-walled cylinder are obtained. In Part II of the paper, the numerical evaluation of the theoretical model will be presented in order to assess its feasibility.
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October 2019
Research-Article
Generalized Plane Strain Study of Rotational Autofrettage of Thick-Walled Cylinders—Part I: Theoretical Analysis
S. M. Kamal,
S. M. Kamal
Department of Mechanical Engineering,
Tezpur University,
Napaam, Tezpur, Assam 784028, India
e-mails: smkmech@tezu.ernet.in; smkengineering@gmail.com
Tezpur University,
Napaam, Tezpur, Assam 784028, India
e-mails: smkmech@tezu.ernet.in; smkengineering@gmail.com
1Corresponding author.
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M. Perl,
M. Perl
Department of Mechanical Engineering,
Ben-Gurion University of the Negev,
Beer-Sheva 84105, Israel
Ben-Gurion University of the Negev,
Beer-Sheva 84105, Israel
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D. Bharali
D. Bharali
Department of Mechanical Engineering,
Tezpur University, Napaam,
Tezpur, Assam 784028, India
Tezpur University, Napaam,
Tezpur, Assam 784028, India
Search for other works by this author on:
S. M. Kamal
Department of Mechanical Engineering,
Tezpur University,
Napaam, Tezpur, Assam 784028, India
e-mails: smkmech@tezu.ernet.in; smkengineering@gmail.com
Tezpur University,
Napaam, Tezpur, Assam 784028, India
e-mails: smkmech@tezu.ernet.in; smkengineering@gmail.com
M. Perl
Department of Mechanical Engineering,
Ben-Gurion University of the Negev,
Beer-Sheva 84105, Israel
Ben-Gurion University of the Negev,
Beer-Sheva 84105, Israel
D. Bharali
Department of Mechanical Engineering,
Tezpur University, Napaam,
Tezpur, Assam 784028, India
Tezpur University, Napaam,
Tezpur, Assam 784028, India
1Corresponding author.
Contributed by the Pressure Vessel and Piping Division of ASME for publication in the JOURNAL OF PRESSURE VESSEL TECHNOLOGY. Manuscript received August 8, 2018; final manuscript received April 10, 2019; published online July 15, 2019. Assoc. Editor: Bostjan Bezensek.
J. Pressure Vessel Technol. Oct 2019, 141(5): 051201 (11 pages)
Published Online: July 15, 2019
Article history
Received:
August 8, 2018
Revised:
April 10, 2019
Citation
Kamal, S. M., Perl, M., and Bharali, D. (July 15, 2019). "Generalized Plane Strain Study of Rotational Autofrettage of Thick-Walled Cylinders—Part I: Theoretical Analysis." ASME. J. Pressure Vessel Technol. October 2019; 141(5): 051201. https://doi.org/10.1115/1.4043591
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