Creep Deformation of a Thin Rotating Disk of Exponentially Varying Thickness with Inclusion

Abstract

Creep stresses and strain rates have been obtained for a thin rotating disc of exponentially varying thickness with inclusion using transition theory. Results obtained have been discussed numerically and depicted graphically. It has been observed that circumferential stress is less for the disk whose thickness decreases exponentially along radius as compared to the flat disk. With the introduction of compressibility parameter, there is small decrease in circumferential stress as compared to the disk made of incompressible material. It is concluded that disk made of compressible material is on the safer side of the design as compared to the incompressible disk with exponentially variable thickness as well as to the flat disk.

Finite Difference Solution of Elastic-Plastic Thin Rotating Annular Disk with Exponentially Variable Thickness and Exponentially Variable Density

“…The research on them is always an important topic, and their benefits have been included in some books [1][2][3]. Sharma et al [4] uses the concept of transition theory to evaluate the stresses for disk with different parameters like variable thickness and variable densities. The elastic-plastic strain hardening problems of annular disks with constant thickness under external pressure were firstly studied by Gamer [5] using linear stress-plastic strain relation.…”

Determine variation of poisson ratios and thermal creep stresses and strain rates in an isotropic disc

“…For finding the thermal creep stresses and strain rates, the transition function is taken through principal stress difference (see SETH, 1962SETH, , 1966SETH, , 1970SETH, , 1972SETH, , 1974GUPTA et al 1979GUPTA et al , 1981GUPTA et al , 2008SHKULA, 1996;SANJEEV et al, 2010SANJEEV et al, , 2013DEEPAK et. al.…”

“…al., 2010DEEPAK et. al., , 2015SHARMA et al, 2010SHARMA et al, , 2013THAKUR, 2010THAKUR, , 2015. In this paper we discuss numerical study of possion ratios and thermal stress and strain rates in an isotropic disc by using Seth transition theory.…”