Computational studies of hull-superstructure interaction were carried out using one-, two- and three-dimensional finite element analyses. Simplification of the original three-dimensional cases to one- and two-dimensional ones was undertaken to reduce the data preparation and computer solution times in an extensive parametric study. Both the one- and two-dimensional models were evaluated from numerical and experimental studies of the three-dimensional arrangements of hull and superstructure. One-dimensional analysis used a simple beam finite element with appropriately changed sections properties at stations where superstructures existed. Two-dimensional analysis used a four node, first order quadrilateral, isoparametric plane elasticity finite element, with a corresponding increase in the grid domain where the superstructure existet. Changes in the thickness property reflected deck stiffness. This model was essentially a multi-flanged beam with the shear webs representing the hull and superstructure sides, and the flanges representing the decks. One-dimensional models consistently and uniformly underestimated the three-dimensional behaviour, but were fast to create and run. Two-dimensional models were also consistent in their assessment, and considerably closer in predicting the actual behaviours. These models took longer to create than the one-dimensional, but ran in very much less time than the refined three-dimensional finite element models.
Preliminary ship design using one- and two-dimensional models
Die Vor-Auslegung von Schiffen mit ein- und zweidimensionalen Modellen
Marine Technology and Sname News ; 36 , 2 ; 102-112
1999
11 Seiten, 4 Bilder, 8 Tabellen, 4 Quellen
Article (Journal)
English
Schiffsrumpf , Wechselwirkung , Spannungsdehnungsverhalten , analytische Untersuchung , Finite-Elemente-Methode , Rechnersimulation , dreidimensionale Darstellung , zweidimensionale Darstellung , Vergleichsmessung , elastische Verformung , Steifigkeit , Wanddicke , Bewertungsmethode , Zuverlässigkeitsvoraussage , Rechenzeit , Dimensionierung
Preliminary Ship Design Using One- and Two-Dimensional Models
Online Contents | 1999
|Preliminary calculations in ship design
Engineering Index Backfile | 1941
|Preliminary calculations in ship design
Engineering Index Backfile | 1941
|Notes on preliminary ship design
Engineering Index Backfile | 1947
|Preliminary calculations in ship design
Engineering Index Backfile | 1941
|