Effects of Magnetic Field in Creep Behavior of ThreePhase Laminated Composite Cylindrical Shells

Due to the importance effect of magnetic field on the history of longterm radial and circumferential creep strain and radial displacement for a threephase nanocomposite exposed to an internal pressure and placed uniform temperature, the present article subject has been proposed. Threephase nanocomposite made of singlewalled carbon nano tubes (SWCNTs)/ glass fiber (GF)/vinylester used to micromechanical models in order to calculate the mechanical and thermal properties. By assuming nonlinear viscoelastic based on Schapery integral model and using classical laminate theory, PrandtlReuss relations and Mendelson’s approximation method achieved results. Distribution of the radial creep strain, circumferential creep strain and radial displacement in two states including without and with magnetic field and three temperature conditions for laminated layups [0/45/0/45] described for 10 years. The results indicate that the magnetic field has reduced the radial and circumferential creep strain and radial displacement. Furthermore, the temperature increase in the magnetic field is less effective on the increased values of creep strain and radial displacement. Finally, It has been founded that magnetic field would reduce the creep strain of all case studies.