Use Bezier Curves in Cubit

Coreform Cubit Geometry
#1

Hey,

I have a short question regarding Bezier Curves. Is it possible do use Bezier Curves in Cubit to generate a geometry and if so, how is the command for that?

Best regards
Andreas

#2

Hi Andreas,

Cubit does not have a good interface for creating general Bezier curves. The create curve spline command fits a spline through a set of points. You could calculate points on your Bezier curve and fit a spline.

You can get a subset of a Bezier curve using the create curve tangent command to specify the start and end vertices and curve tangent directions. For example,

create vertex 0 0 0
create vertex 3 0 0
create curve tangent vertex 1 2 start direction 1 1 0 end direction 1 -1 0

image

The tangent directions get normalized so you cannot control the distance of the tangent vector. This form is most useful for smoothly joining two existing curves (C1 continuity). Given existing curves 1 and 2 create a C1 continuous curve (id 3) that joins them.

 create curve tangent vertex 2 3

image

Thanks,
Karl

#3

Hi Karl,

thank you for the hint.

Best regards
Andreas