Rings Discs And Cylinders Subjected To Rotation And Thermal Gradients


For thin rotating rings and cylinders of mean radius R, the tensile hoop stress set up is given by on = fxo2R2

The radial and hoop stresses at any radius r in a disc of uniform thickness rotating with an angular velocity co rad/s are given by

B pco2r2

rL 8

where A and B are constants, p is the density of the disc material and v is Poisson's ratio. For a solid disc of radius R these equations give ar = (3 + v)~(R2 ~ r2) 2

At the centre of the solid disc these equations yield the maximum stress values pco2R2

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