A parametric methodology for the preliminary design of SWATH hulls

Pérez-Arribas, F.; Calderon-Sanchez, Javier

doi:10.1016/j.oceaneng.2019.106823

Cited by 12 publications

(2 citation statements)

References 8 publications

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“…Two recent references about the parametric design of ships are [18,19], showing that parametric ship design is an active subject for the Academy. Rhinoceros and Grasshopper have been used in parametric design in [20] for the parametric definition of SWATH hulls that can be defined with the use of equations.…”

Section: Introductionmentioning

confidence: 99%

Parametric Generation of Small Ship Hulls with CAD Software

Pérez-Arribas

2023

JMSE

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CAD software is a daily tool in ship design offices and shipyards, and every software uses NURBS or B-splines curves and surfaces as common foundations. The CAD tools of today are not static software products and most of them now include parametric design modules, which enable users to change the shape of an object based on its key geometric feature parameters with the use of sliders or equivalent controls. Although B-spline techniques are commonly applied to the representation of the ship hull curves and surfaces, the parametric deformation of the hull surfaces based on geometric parameters is less used. This paper presents a methodology to define the parametric definition of a ship hull with the use of a standard and non-specialized CAD software that is of common use in the ship design offices and universities: Rhinoceros. The presented parametric design methodology will use specific ship hull parameters or feature parameters with a clear geometric meaning, such as displacement, waterplane area, LCB, and LCF, together with the properties of the B-spline curves and the power of Grasshopper, the parametric design tool inside Rhinoceros, to create parametric ship hulls.

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Section: Introductionmentioning

confidence: 99%

Parametric Generation of Small Ship Hulls with CAD Software

Pérez-Arribas

2023

JMSE

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“…Zhang [25] applied a new method of a parametric design Bsplines curve based on the cubic B-splines to establish a parametric model of a simple highspeed ship. Pérez-Arribas [26][27][28] presented a practical method for defining a planning hull based on geometric parameters including position, slope, enclosed area, and centroid with B-spline curves and surfaces. Nam et al [29] used the NURBS technique to design the hull surface according to the given principal dimension of the hull and other parameters.…”

Section: Introductionmentioning

confidence: 99%

NURBS-Based Parametric Design for Ship Hull Form

Zhou

Feng

Liu

et al. 2022

JMSE

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Recently, the NURBS technique has been widely used in the 3D design software for ships. However, in most research, the NURBS technique is only applied to the mathematical representation of hull curves and surfaces, and the parametric deformation of hull surfaces based on geometric feature parameters is less understood. The aims of this paper are to establish the parametric design process of hull surfaces through the classification of geometric feature parameters and the design of feature curves, apply the NURBS technique to the parametric geometric modeling of hull curves and surfaces, and finally achieve the parametric deformation of hull surfaces driven by geometric feature parameters and develop the parametric deformation software. Taking the Series 60 ship as an example, we first analyze the hull geometric features and parameters, then design the longitudinal feature curves and cross-section curves based on the NURBS technique and establish the correlation between them, and finally generate the smooth hull surface by the skinning technique to achieve the parametric geometric deformation of the Series 60 ship. The research in this paper shows that the smoothness of the surfaces generated by the NURBS-based parametric design method is good. Additionally, the extracted feature parameters have a clear geometric meaning and can automatically generate hull forms to meet the design requirements quickly and effectively, which has some practical engineering value.

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