Limit angular velocity of rotating disc with unified yield criterion
✍ Scribed by Guowei Ma; Hong Hao; Yutaka Miyamoto
- Publisher
- Elsevier Science
- Year
- 2001
- Tongue
- English
- Weight
- 336 KB
- Volume
- 43
- Category
- Article
- ISSN
- 0020-7403
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✦ Synopsis
Plastic limit analysis of a rotating solid or annular disc with variable thickness is presented in terms of a uni"ed yield criterion (UYC). Stress distributions of the discs in plastic limit state corresponding to di!erent yield curves are deduced. Upper and lower bounds of the plastic limit solutions are derived by selecting a weighting coe$cient in the uni"ed yield criterion. Stress redistribution is solved when the stress "eld violates yield criterion locally. Limit angular velocity as well as the stress distributions with respect to three special criteria, namely the Tresca criterion, the Mises criterion (close form solution) and the Yu criterion are illustrated and compared. The in#uences of yield criterion as well as the thickness on plastic limit solution of a rotating disc are demonstrated and discussed.