Investigation into steady state creep of AlSiC cylinder on account of residual stress with internal and external pressure

Structural engineers use composite cylinders in making innovative designs for power plants, gun barrels, pipes of nuclear reactor and many other dynamic applications. Axi-symmetric structure of cylinder operates under severe thermo-mechanical loading which leads to creep reducing service life of these structures. In the present framework, steady state creep in an aluminium silicon carbide cylinder rotating at constant angular speed has been investigated on account of residual stress. The internal and external pressure are both included in the framework of annular structure made of isotropic material maintained at uniform temperature. Governing equations are solved and numerical results are expressed graphically. The study reveals that on account of residual stresses, internal pressure leads to increase in the strain rate of the cylinder however in the presence of internal and external pressure, the strain rate decreases with a steep slope in the cylinder. Thus, for purposeful design of rotating cylinder, one should take care of residual stresses and external pressure. Strain rate can be optimized by applying pressure both internally as well as externally.