Research on 3D modeling of ship body with NURBS surface
To address the issue of the complexity of ship body surfaces,which makes it difficult to accurately express contours and shapes,a three-dimensional modeling method for ship bodies using NURBS surfaces is studied.Perform co-ordinate transformation on the surface shape points of the ship's main body,mapping the two-dimensional plane coordinates of the ship's main body to a three-dimensional coordinate system.Using the converted surface shape value points,create the ship's main reference surface and generate the ship's main body profile.Determine the NURBS surface of the ship's main body using the control points of the ship's main body shape and corresponding weight factors.Construct a cubic B-spline curve using NURBS surface control points of the ship's main body.By using the NURBS curve inverse method,the segmen-ted connection points of the curve correspond to the nodes within the B-spline curve domain,completing the construction of the three-dimensional modeling model of the ship body.The experimental results show that this method can effectively es-tablish a three-dimensional modeling model of the ship body,meeting the needs of ship design and performance analysis.
NURBS surfaceship subject3D modelingtype value pointreference planecontrol point
NETL
NSTL
万方数据
