How a ball free to orbit in a circular track mitigates the galloping of a square prism

Transverse galloping is a type of flow-induced vibration (FIV) that leads to critical design considerations for engineering structures. A purely nonlinear energy sink (NES) composed ball free rotate in circular track experimentally mitigated the square previous study. The current study introduces model simulating dynamics prism coupled with ball-in-track (BIT) NES and predicting system behaviour at high flow speeds beyond limits previously presented experiments. Numerical simulations employ fitting experimental data as inputs define parameters. Wind tunnel static experiments provide force coefficient \(C_y\) relative angle attack. Additionally, rotation tests allow evaluating damping \(c_\theta \) function its mass radius. result provides angular speed which increases nonlinearly. We point out variation an advantage BIT-NES; less low velocities helps start rotation, while relatively large higher dissipates more from vibrating system. results exhibit four response modes NES: oscillatory speeds, intermittent within small range rotational ineffective regime effective range. Modelling primary parametric excitation source analytical estimation boundary between regimes. Furthermore, we advance analysis power across integrated prism-NES explain predict limit