Supporting data for: Nonlinear dynamics and stability boundaries of spinning fluid-conveying pipes - Galerkin and Hencky model approach

This dataset provides the supporting material for the manuscript "Nonlinear Dynamics and Stability Boundaries of Spinning Fluid-Conveying Pipes: Galerkin and Hencky Model Approach", submitted to the Journal of Sound and Vibration.The study investigates the nonlinear vibration and stability behavior of a simply supported pipe that simultaneously spins about its longitudinal axis and conveys an internal fluid. Two independent modeling approaches are developed and cross-validated: a continuous formulation based on the extended Hamilton's principle and discretized by the Galerkin method, and a discrete Hencky bar-chain model composed of rigid segments connected by angular springs and dampers.The dataset contains the numerical source codes used to generate all results reported in the manuscript, the computed data underlying the stability maps and bifurcation diagrams, the eigenvalue trajectories as functions of flow velocity and rotational speed, the time-history simulations used to construct the post-critical whirling responses, and the animation files corresponding to Supplementary Videos S1–S5, which illustrate the forward and backward whirling components, the steady-state whirling motion, and the three-dimensional helical deflection shapes arising at elevated parameter values.A README file is included describing the folder structure, file formats, parameter conventions, and instructions for reproducing the figures of the manuscript. The material is intended to support reproducibility, to facilitate independent verification of the stability boundary in the flow-velocity–rotational-speed plane, and to serve as a reference for future investigations on spinning fluid-conveying structures.