6 papers
Large post-critical dynamics of an inextensible spinning fluid-conveying pipe with pinned-roller supports: high-order Galerkin and a modified Hencky bar-chain framework
Ali Fasihi, Grzegorz Kudra, Maryam GhandchiTehrani +1
This paper investigates the stability and large post-critical dynamics of an inextensible spinning fluid-conveying pipe with pinned-roller supports. Replacing the pinned-pinned sup…
Analytical and numerical study of a parametrically excited 2DOF oscillator with nonlinear restoring magnetic force and rotating rectangular rod
Muhammad Junaid-U-Rehman, Grzegorz Kudra, Krystian PolczyÅski +2
This study investigates a detailed analytical and numerical investigation of a nonlinear two-degree-of-freedom (2DOF) mechanical oscillator subjected to parametric excitation, magn…
Bifurcations and synchronization of coupled translational-rotational stick-slip oscillators
Grzegorz Kudra, Ali Fasihi, Mohammad Parsa Rezaei +2
This paper presents mathematical modeling and numerical analysis of bifurcation and synchronization phenomena in a system of coupled oscillators driven by a finite-power energy sou…
Dynamic behavior of shear-thickening fluids under harmonic excitation: an experimental investigation
Mohammad Parsa Rezaei, Grzegorz Kudra, Krzysztof Witkowski +2
Shear-thickening fluids (STFs) become more viscous under shear stress, which makes them useful for many engineering and scientific applications. However, their behavior under norma…
Overcoming stretching and shortening assumptions in Euler-Bernoulli theory using nonlinear Hencky beam models: applicable to partly-shortened and partly-stretched beams
Mohammad Parsa Rezaei, Grzegorz Kudra, Mojtaba Ghodsi +1
This paper addresses the challenges of the Euler-Bernoulli beam theory regarding shortening and stretching assumptions. Certain boundary conditions, such as a cantilever with a hor…
Nonlinear dynamics of spinning fluid-conveying pipes with structural damping: stability analysis and post-instability behavior
Ali Fasihi, Grzegorz Kudra, Maryam Ghandchi Tehrani +1
Nonlinear dynamics of fluid conveying pipe, rotating with constant velocity about its longitudinal axis is analyzed. Considering boundary conditions and internal damping, the nonli…