F. Axisa

TL;DR: In this article, the authors investigated the random excitation mechanism of tube arrays in cross-flow, also often called "turbulent buffeting" and concluded that random forces produced by air-water and by steam-water mixtures would be of the same order of magnitude.

TL;DR: In this article, a simple model is presented which accounts for the key aspects of dry friction and is well suited to the efficient explicit numerical integration schemes, specifically through nonlinear modal superposition.

TL;DR: In this article, a theoretical model for predicting the dynamic behavior and stability of a rotating shaft immersed in both a concentric or eccentric fluid annulus is developed, and experimental results are reported and favourably compared with the present theory.

TL;DR: In this article, the linear vibrations arising in rotating shafts immersed in a dense annular fluid are analyzed from a theoretical point of view, and it is found that even at relatively slow rotating speeds fluid elastic forces induced by the co-rotating flow surrounding the shaft significantly affect the transverse natural modes of vibration of the shaft.