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Creep transition in a thin rotating disc having variable thickness and variable density. (English) Zbl 1009.74012

Summary: By using Seth’s transition theory, we calculate creep stresses and strain rates for a thin rotating disc with variable thickness and variable density. Results are discussed and depicted graphically. It is shown that a rotating disc whose density and thickness ratio decrease radially, is on the safer side of the design in comparison to a flat disc having variable density.

MSC:

74C99 Plastic materials, materials of stress-rate and internal-variable type
74H99 Dynamical problems in solid mechanics
74K10 Rods (beams, columns, shafts, arches, rings, etc.)
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