Influence of thick-walled cylinders length on the residual stresses generated during the single-cycle mandrelling

V. F. Skvortsov, A. O. Boznak, A. B. Kim, A. Yu Arlyapov

Research output: Contribution to journalConference articlepeer-review

3 Citations (Scopus)

Abstract

The paper presents methodology and results of experimental study by Sachs method the effect of length of mandrelled thick-walled cylinders made of steel grade 50 (0.5% C) with 5 mm diameter hole, outer diameter of 15 and 25 mm on residual stresses. Based on the review of studies, it was noted that this effect may be both due to uneven process of mandrelling along the cylinder length and due to zero axial residual stresses on its faces. It was found that the length of cylinders has the strongest influence on axial residual stresses. With allowances between 0.9 and 7.1% and length reduction from 40 to 10 mm, the largest absolute value of axial residual stresses decreases from 210 to 50 MPa. It was noted that when the outer diameter of cylinders is 15 mm their length significantly influence on both hoop and radial residual stresses. With the above-mentioned decrease in cylinders length, absolute values of hoop and radial residual stresses in the region adjacent to the hole, depending on the mandrelling allowance, increase (from -135 to -205 MPa and from -45 to 55 MPa respectively, when allowance is 7.1%), decrease (from -315 to -235 MPa and from -135 to -95 MPa respectively, when allowance is 0.9%) and remain almost unchanged (when allowance is 3.4%). Impact of length on these stresses is weak when the outer diameter of cylinders is 25 mm.

Original languageEnglish
Article number012054
JournalIOP Conference Series: Materials Science and Engineering
Volume91
Issue number1
DOIs
Publication statusPublished - 14 Sep 2015
Event6th International Scientific Practical Conference on Innovative Technologies and Economics in Engineering - Yurga, Russian Federation
Duration: 21 May 201523 May 2015

ASJC Scopus subject areas

  • Materials Science(all)
  • Engineering(all)

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