Vol.18, No.3, 2018, pp.207–214
UDC  66.018.9:539.376

The purpose of this paper is to present the study of creep damage modelling in a transversely isotropic material disc having variable density and mechanical load by using Seth’s transition theory. Neither the yield criterion, nor the associated flow rule is assumed here. The results obtained here are applicable to transversely isotropic and isotropic materials. If the additional condition of incompressibility is imposed, then the expression of stresses corresponds to those arising from Tresca yield condition. It has been seen that the disc made of transversely isotropic material and having different mechanical load and whose density decreases radially is on the safer side of the design compared to the disc made of isotropic material.

Keywords: creep stress modelling, strain rates, angular speed, load, disc