The stress distribution in a rotating solid shaft with temperature dependent yield
stress subject to a temperature cycle is investigated. It is presumed that the shaft
is in a state of generalized plane strain and obeys Tresca&rsquo / s yield criterion and the
flow rule associated with it. By the temperature cycle it is meant that the surface
temperature of the shaft is increased to a limiting value, it is held at this temperature
for a while, and then slowly decreased at the same rate to the reference temperature.
The isothermal shaft is rotated up to around elastic limit rotation speed and then
the temperature cycle is applied to the surface of the shaft. Even in an initially
purely elastic shaft, two plastic regions with different forms of the yield condition
emerge simultaneously at the centre and expand into the elastic region. However, the
expansion of the plastic zone ceases soon thereafter, and an unloaded region spreads
into the plastic core. It is shown that the stress distribution is altered significantly by
the temperature cycle, hence also leading to non-zero residual stresses at stand-still.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12611573/index.pdf |
| Date | 01 February 2010 |
| Creators | Arslan, Eray |
| Contributors | Eraslan, Ahmet Nedim |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | Ph.D. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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