Bulbous Bow Shape Analysis

[Matthias Maasch 21]

Hi folks

 

please find attached a Feature Definition for a "Bulbous Bow Shape Analysis" and a Feature Definition which can be used in a CurveEngine for creating a MetaSurface.

 

shapeAnalysis_Bulbous_Bow.fdf

 

bulbous_bow_section.fdf

 

[edited 05.10.14 - tangent analysis included]

 

In order to replace a Bulbous-Bow-IGES-Import by a fully parametric MetaSurface you can use this Feature by execute the following steps:

 

• Create a Surface Group including all the IGES-surfaces
• Create a new Feature Definition and reload the Analysis-Feature, apply and create the Feature by right click on the Feature Definition>Create Feature
• Pass the Surface Group to the Analysis-Feature and enter (if necessary) start- and end-position in x-direction of the bulbous bow
• Additionally give a number of offsets (30-50 should be a good choice)
• Run the Feature

 

This will create function curves which can be used to create a MetaSurface.

 

 

The next steps should be:

 

• Re-model the function curves by e.g.  FSplineCurves
• Create parameters for some values of the new curves, like start/end position, start/end tangent or area

 

 

• Create a CurveEngine
• Create a new Feature Definition, reload the Section-Feature and apply
• Select the Bulbous-Bow-Section-Feature and pass the new function curves to the Engine
• Additionally you can set start- end end-tangent values
• Create a MetaSurface, select the Curve Engine and set the base positions according to the start- and end-position in x-direction

Now you will have a single Metasurface, which is parametric and ready for a design study.

 

 

Cheers

 

Matthias

[Mr. MAYTHU ZAW 0]

Hi, I am doing this as you said above ..But I don't know how to remodel function curve to F-spline.Could you explain this step for me? Thank you