Limit angular velocities of variable thickness rotating disks

Eraslan A., Argeso H.

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES, vol.39, no.12, pp.3109-3130, 2002 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 39 Issue: 12
  • Publication Date: 2002
  • Doi Number: 10.1016/s0020-7683(02)00249-4
  • Journal Name: INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.3109-3130
  • Keywords: stress analysis, rotating disks, variable thickness, nonlinear strain hardening, ELASTIC-PLASTIC STRESSES, SOLID DISK
  • Middle East Technical University Affiliated: Yes

Abstract

Elastic and plastic limit angular velocities are calculated for rotating disks of variable thickness in power function form. Analytical solution is obtained and used to calculate elastic limit angular velocities of variable thickness rotating annular disks and annular disks with rigid inclusion. An efficient numerical solution procedure is designed and used to obtain the elastic limit angular velocities of variable thickness rotating solid disks. Von Mises yield criterion and its flow rule is used to estimate plastic limit angular velocities. Both linear and nonlinear hardening material behaviors are treated numerically. The results are verified by comparing with those of uniform thickness rotating solid disks available in the literature. Elastic and plastic limit angular velocities are found to increase with the reduction of the disk thickness at the edge as well as the reduction in the disk mass due to the shape of the profile. (C) 2002 Elsevier Science Ltd. All rights reserved.