Journal of Theoretical
and Applied Mechanics

55, 4, pp. 1155-1165, Warsaw 2017
DOI: 10.15632/jtam-pl.55.4.1155

Thermal creep stress and strain analysis in non-homogeneous spherical shell

Pankaj Thakur, Satya Bir Singh, D.S. Pathania, Gaurav Verma
The purpose of this paper is to present study of thermal creep stress and strain rates in a
non-homogeneous spherical shell by using Seth’s transition theory. Seth’s transition theory is
applied to the problem of creep stresses and strain rates in the non-homogeneous spherical
shell under steady-state temperature. Neither the yield criterion nor the associated flow
rule is assumed here. With the introduction of thermal effect, values of circumferential
stress decrease at the external surface as well as internal surface of the spherical shell. It
means that the temperature dependent materials minimize the possibility of fracture at the
internal surface of the spherical shell. The model proposed in this paper is used commonly
as a design of chemical and oil plants, industrial gases and stream turbines, high speed
structures involving aerodynamic heating.
Keywords: stress, strain rates, thermal, spherical shell, non-homogeneous