Elastoplastic analysis of rotating shrink-fitted discs with nonlinear hardening characteristics

Elastoplastic analysis of a thin rotating disc shrink-fitted to an elastic shaft is provided. A nonlinear hardening material with equivalent stress σ̄ = Y + A(ε̄p)n, where A and n are constants, Y is the yield strength, and ε̄p is the equivalent plastic strain, is employed. Tresca yield criterion is...

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Bibliographic Details
Published in:International journal of solids and structures 1993, Vol.30 (6), p.751-765
Main Authors: Megahed, M.M., Abdel-Kader, M.S.
Format: Article
Language:English
Subjects:
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Inelasticity (thermoplasticity, viscoplasticity...)
Physics
Solid mechanics
Structural and continuum mechanics
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Summary:Elastoplastic analysis of a thin rotating disc shrink-fitted to an elastic shaft is provided. A nonlinear hardening material with equivalent stress σ̄ = Y + A(ε̄p)n, where A and n are constants, Y is the yield strength, and ε̄p is the equivalent plastic strain, is employed. Tresca yield criterion is adopted, and the operating conditions (interference and rotation) are assumed to induce radial and hoop stresses which lie in the second quadrant of the Tresca hexagon. Quasi-analytical solutions are deduced for the radial distributions of plastic hoop strain as well as radial and hoop stresses for n = 1, 1/2, 1/3 and 1/4. Validity domains of the solutions developed are determined and favourably compared to those of other investigators. Conditions for elastic shakedown limit are also discussed. In addition, an approximate solution is developed, which can be advantageously employed in the range 0
ISSN:0020-7683
1879-2146
DOI:10.1016/0020-7683(93)90038-9