Paper Title
Critical Velocity Analysis as well as the Effect of Dynamic Vibrations Absorber of Fluid-Containing Pipes

Abstract
In this paper, we first intend to introduce the pipes and their applications, then we introduce and analyze the critical speed of the pipes, at this critical speed, the stability of the pipe is lost and the pipe may fail . We also examine the effect of adding a vibrating adsorbent to the tube; we find that by adding one Vibrating absorber to the pipe can reduce the vibration domain of the pipe by about 70% and delay the critical velocity of the pipe. Keywords - Pipe, Critical Speed, Vibration Absorber