Vol.12, No3, 2012, pp.165–173
UDC 620.17:66-988

Creep stresses and strain rates have been obtained for a thick-walled circular cylinder made of compressible and incompressible material subjected to internal pressure and steady state temperature by using Seth’s transition theory. It has been observed that the circumferential stress has maximum value at the external surface of the cylinder made of incompressible material as compared to compressible material, with effects of temperature reducing stresses at the external surface of the cylinder in comparison to pressure effects alone. Strain rates are found to be maximum at the internal surface of the cylinder of compressible material and they decrease with the radius. With the introduction of temperature effect, the creep rates have higher values at the internal surface but lesser values at the external surface as compared to a cylinder subjected to pressure only.

Keywords: creep stress, strain rates, pressure, cylinder, temperature