... excite vibrations. The ILI tool’s weight and speed can exert substantial forces, stresses, and deflections on the pipe section. When the excitation frequency from the ILI tool’s movement is close to the pipe’s natural frequency, the dynamic stress generated within the pipe can become great enough...

... point Figure 11 shows the effect of the nonlinear boundary to the dynamic stress along the beam. Here, only the stable solutions are considered. As the response of the middle point with both artificially nonlinear damping and artificially nonlinear stiffness is a little bigger than...

... features of the system and the nonlinear dynamic stress of the rotor cannot be investigated. In this paper, the shooting method, path-following technique, and Floquet theory are chosen to evaluate the stability and bifurcation characteristics of a 3D rotor system. Simultaneously, the dynamic stress...

... . Manuscript received April 19, 2011; final manuscript received April 30, 2012; published online October 29, 2012. Assoc. Editor: Thomas J. Royston. 19 04 2011 30 04 2012 This work examines the surface/interface effect on the dynamic stress around a cylindrical nanoinclusion embedded...