Temat: vortex induced vibration - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effects of various factors on the viv-induced fatigue damage in the cable of submerged floating tunnel
Autorzy:: Luo, G.
Chen, J.
Zhou, X.
Powiązania:: https://bibliotekanauki.pl/articles/259555.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: submerged floating tunnel cable
vortex induced vibration
fatigue damage
factor analysis
Opis:: According to the modal superposition method, the vortex vibration procedure of submerged floating tunnel cable was compiled using Matlab, based on the calculated results, the fatigue damage was predicted. The effects of various factors, such as cable density, cable length, and pretension and velocity distribution on vortex induced fatigue damage in the cable were studied. The results show that velocity distribution has more effect on the cable fatigue damage than cable length, cable density and pretension. Secondly, cable length has also relatively effect on the cable damage fatigue, cable density and pretension has limited in a certain range.
Źródło:: Polish Maritime Research; 2015, 4; 76-83
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Prediction of vortex-induced vibration response of deep sea top-tensioned riser in sheared flow considering parametric excitations
Autorzy:: Gao, Guanghai
Cui, Yunjing
Qiu, Xingqi
Powiązania:: https://bibliotekanauki.pl/articles/260560.pdf
Data publikacji:: 2020
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: top-tensioned riser
vortex-induced vibration
wake oscillator model
time-varying axial tension force
sheared flow
Opis:: It is widely accepted that vortex-induced vibration (VIV) is a major concern in the design of deep sea top-tensioned risers, especially when the riser is subjected to axial parametric excitations. An improved time domain prediction model was proposed in this paper. The prediction model was based on classical van der Pol wake oscillator models, and the impacts of the riser in-line vibration and vessel heave motion were considered. The finite element, Newmark-β and Newton‒Raphson methods were adopted to solve the coupled nonlinear partial differential equations. The entire numerical solution process was realised by a self-developed program based on MATLAB. Comparisons between the numerical calculation and the published experimental test were conducted in this paper. The in-line and cross-flow VIV responses of a real size top-tensioned riser in linear sheared flow were analysed. The effects of the vessel heave amplitude and frequency on the riser VIV were also studied. The results show that the vibration displacements of the riser are larger than the case without vessel heave motion. The vibration modes and frequencies of the riser are also changed due to the vessel heave motion
Źródło:: Polish Maritime Research; 2020, 2; 48-57
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "vortex induced vibration" wg kryterium: Temat

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język