Abstract
Abstract This study deals with estimation of steady state creep stresses and strain rates in composite spherical vessels subjected to internal and external pressures. The creep behaviour of the material was described by threshold stress based creep law used for composite materials. The well established von-Mises yield criterion has been also used in this analysis. The effect of reinforcement size and reinforcement volume content on the stresses and creep rates in the spherical vessels was studied. The creep stresses in the spherical pressure vessels do not have significant variation except of effective stress. On the other hand, the tangential, radial as well as effective strain rates in the spherical vessel reduced to significant extent by using lesser diameter particles and increasing the quantity of silicon carbide particles.
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