STABILITY AND DYNAMIC ANALYSES OF PIPE CONVEYED FLUID STIFFENED BY LINEAR STIFFNESS ELEMENT USING FINITE ELEMENTS METHOD

Different types of dynamic instability the system occur when flow velocity exceeds a specific value; thereby problem pipe conveyed became shining. Several effective parameters play an important role in stabilizing system, such as stiffness addition. In this search, analysis conveying fluid stiffened by linear spring was studied using finite element method. The effect addition (linear spring) and location deeply studied. Also, on stability taken into consideration. It observed that there is critical after which loses its stability. There constant at behavior becomes more sensitive. (effective location) so offers best results for frequency system. Effective locations depend itself. found to be arranged from x/l= 0.7 1.