Pregledni rad
https://doi.org/10.21857/mwo1vc5gly
Evaluation of structural design of ultra large container vessel
Nikola Vladimir
orcid.org/0000-0001-9164-1361
; Fakultet strojarstva i brodogradnje Sveučilišta u Zagrebu, Zagreb, Hrvatska
Šime Malenica
; Fakultet strojarstva i brodogradnje Sveučilišta u Zagrebu, Zagreb, Hrvatska
Ivo Senjanović
Jérôme De Lauzon
Hong-Il Im
Dae-Seung Cho
Sažetak
The trend in modern sea transportation is building of ever larger container vessels, which require application of different numerical tools according to the relevant methodologies, in order to achieve their reliable structural design. The aim of this paper is to review direct strength assessment procedure based on long-term hydro-structure calculations including whipping and springing. As illustrative example, ultra large container ship with a capacity of 19000 TEU is selected and her structural design is evaluated both for fatigue and extreme response, respectively. Mathematical model is based on coupling of the 3D potential flow hydrodynamic model with the 3D FEM structural model. The general hydro-structure code HOMER, developed in Classification Society Bureau Veritas (BV) is used. Stress RAOs of selected structural details are obtained for full scatted diagram by the top-down procedure, and further used to assess their fatigue lives. Linear long term analysis is performed to define most contributing sea state to the vertical bending moment (VMB). Whipping response is computed on so called increased design sea state in time domain. Ultimate bending capacity was determined by nonlinear finite element analysis. Finally, extreme VBM is determined, and ultimate strength check according to the BV Rule Note NR583 was done.
Ključne riječi
container ship; direct calculations; hydroelasticity; fatigue; extreme response; frequency domain; time domain.
Hrčak ID:
216400
URI
Datum izdavanja:
28.9.2017.
Posjeta: 1.236 *