Dynamic Behavior of a Fluid-Conveying Pipe with an Internal Nonlinear Support

Fluid-conveying pipes are widely used in construction, aerospace, marine and ocean engineering, and many other engineering domains as fundamental engineering elements. Understanding the fluid’s dynamic behavior and vibration characteristics is crucial for properly mitigating unanticipated vibrations. In this work, a fluid-conveying pipe with an internal nonlinear support is modeled for dynamic behavior analysis. The Galerkin truncation technique can be used to predict the nonlinear dynamic behavior of internally nonlinearly supported fluid-transporting pipes. The mode functions of the fluid-conveying pipe that is normally constrained serve as the trial and weight functions in relation to the Galerkin truncation method. The fluid-conveying pipe with internal nonlinear support’s nonlinear dynamic responses is verified using the harmonic balance technique. The impact of the sweeping techniques and internal nonlinear support parameters on the fluid-conveying pipe’s dynamic responses with internal nonlinear support is thus investigated. In summary, initial values have an impact on the fluid-conveying pipe’s dynamic reactions with internal nonlinear support. The fluid-conveying pipe’s vibration states can be efficiently changed by the fluid velocity, internal nonlinear stiffness and internal nonlinear support location. Vibrations at both ends of the fluid-conveying pipe can be lessened by using the proper fluid velocity, nonlinear internal support stiffness and internal nonlinear support position parameters.