Attaching Analysis Planes to NURB Surfaces
How do I attach analysis planes to NURB surfaces?
The parametric construction of NURBs is fundamentally different than other native FRED surfaces, which can lead to difficulty in positioning or attaching analysis surfaces to NURBs. Unlike the native FRED surfaces in which the origin is definite and known, imported CAD models can contain NURB surfaces of arbitrary shape, size and position. This flexibility leads to a fundamental question: What point on the arbitrarily shaped NURB surface becomes the origin after import? For a detailed description on attaching analysis planes to NURB surfaces, please read the NURB surface origin section of FRED’s Online Help topic entitled “File – Import CAD” or read our related article: CAD Surface Position and Orientation