LAUSR

Cylindrical vessels are widely used in petroleum or aerospace industry. In these applications, the cylinders have to work under harsh mechanical and thermal loadings where creep plays an important role. The present paper analyzes creeps behavior of an Al–SiCp composite cylinder under internal pressure. The strains are assumed to be large which necessitate the use of finite strain theory. Threshold creep law is used for analysis because the creep rate in aluminum-based composites using Norton’s law was not approved due to apparently high stress exponent and high apparent activation energy. Such analysis will help the designers in the prediction of correct creep rate and stresses in cases where large creep deformation of a cylinder is permissible. With the use of finite strain theory, it is found that design of the cylinder based on small strain theory leads to unsafe cylinder design.