A power-function creep analysis for rotating solid disks having variable thickness and temperature

✍ Scribed by B.M. Ma

• Publisher: Elsevier Science
• Year: 1964
• Tongue: English
• Weight: 853 KB
• Volume: 277
• Category: Article
• ISSN: 0016-0032
• DOI: 10.1016/0016-0032(64)90377-1

✦ Synopsis

A power-function creep analysis for stress distribution in rotating solid disks having variable thickness and temperature is presented. As in a previous paper (1), this analysis is on the basis of the theory of Tresea's criterion and its associated flow rule for the materials with high ductility. In fact, ductility is one of the most important requirements of the disk materials used in gas turbines and jet engines. For applications, gas turbines and jet engines not only find their wide use in conventional and aircraft power plants but also have the potential to extend their service as a component of the nuclear space auxiliary power system.

The chief advantage of this stress analysis under creep condition is that the complex problem of the disk design can be solved with great simplicity by the closed form, instead of a tedious numerical solution.

B.M. Ma

O" a 0"t, 0-r, 0" z O'ro 0"tm, (Tr m (TQ et~ er, e~ = p= g= p(22ro2= equivalent inertial stress in rotating thin ring of radius ro tangential, radial and axial stresses of the disk radial stress at ro of the disk tangential and radial stresses at xc maximum tangential and radial stresses at xm tangential stress at x~ creep rate or effective creep rate tangential, radial and axial creep rates of the disk tangential creep rate at x~ of the disk ~,/g = density of disk material specific weight of disk material gravitational acceleration angular speed of the disk.