Dynamic instability analysis of carbon nanotube-reinforced composite oil pipelines conveying pulsating fluid

چکیده مقاله

In this paper, a formulation for the dynamic instability analysis of carbon nanotube- reinforced composite oil pipeline conveying fluid with pulsating velocity is presented. The nonlinear strain terms based on Donnell’s theory are taken into account. Rapidly changing oil flow rates caused by pulsation have been found to help dislodge pesky contaminants from nooks and crannies. The Hamilton’s principle is employed to obtain differential equations, oil pipeline bed is simulated as Visco-Pasternak foundation. Differential quadrature method (DQM) is applied to approximate the dynamic instability of nanocomposite oil pipeline. Re- sults display that some parameters containing pulsating fluid, temperature and nanotube vol- ume fraction have main influence on the instability of the composite oil pipeline.