OICC Press Journal of Solid Mechanics 2008-7683 8 1 2016 03 30 Steady Thermal Stresses in a Thin Rotating Disc of Finitesimal Deformation with Mechanical Load 204 211 EN J Kaur Department of Mathematics, Punjabi University Patiala, Punjab 147002, India P Thakur Department of Mathematics, IEC University Baddi, Solan, Himachal Pradesh 174103, India S.B Singh Department of Mathematics, Punjabi University Patiala, Punjab 147002, India Journal Article 2016 03 30 Seth’s transition theory is applied to the problems of thickness variation parameter in a thin rotating disc by finite deformation. Neither the yield criterion nor the associated flow rule is assumed here. The results obtained here are applicable to compressible materials. If the additional condition of incompressibility is imposed, then the expression for stresses corresponds to those arising from Tresca yield condition. It has observed that for rotating disc made of compressible material required higher angular speed to yield at the internal surface as compare to disc made of incompressible material and a much higher angular speed is required to yield with the increase in radii ratio. With the introduction of thermal effects, lesser angular speed is required to yield at the internal surface. Thermal effect in the disc increase the value of circumferential stress at the internal surface and radial stresses at the external surface for compressible as compare to incompressible material.