I guess so. The geometry is in fact the result of a 3D scan consisting of polygonized points of which I have taken a section and exported it as IGES. The cross section consists of 585 discrete points and I guess they have just been exported as points then? Edit: I checked the IGES file and it did indeed just export 585 discrete points. Is there a way to connect these points or should I try to approximate these points through splines?
Don't remember if V20 allowed revolving connected segments without relationships. The sketch in the image does not seem to have relationships, though latest versions as far ST6 allow revolving a series of lines with connected endpoints having no relations.
Hi there Hendrik,
I don't know of any automated way, in Solid Edge [I can do this in another program though]....but I suspect in SE you'd need to create a new sketch and use the end points to create new geometry, being careful not to use too many of the control points. [either by tangent lines & arcs, or a continuous spline curve]
Also, feel free to upload your ".PAR" file for myself or one of the good people here, to offer more exacting help, based on how the geometry will respond and get to the result you need.
Design Manager Streetscape Ltd
Solid Edge 2019 [MP6] Classic [x3 Seats - Cloud Enabled]
Windows 10 - Quadro P2000
Many thanks for your interest and effort!
Attached I have included the draft file, the part file, and the IGES export file containing just the points. The accuracy of these points is highly important, the measurements happened with a relative accuracy of 0,01 mm. Also the distance to the Z axis is of great importance. I apologize for asking such basic things, I am a PhD student in welding engineering with little experience in CAD software.
as is often the case, what seems like a simple question is actually quite complex. What method you use to fit a curve to this data is likely to be dependant on what you are going to use the curve for. Apologies if you already know all this but the question of accuracy is quite difficult to define and answer.
You could fit a curve through all 500+ points but it will be very slow to manipulate because the curve would be so comlex and time-consuming to compute. Given that there are already small errors in the point definitions if you forced a curve through all points it could actually be very innaccurate. The curve could be within the 0.01 band of the 'real' location of the points but between points you have no idea. The curve could end up wavy and thus a possibly poor representation of the actual 'real' shape.
If you were to use the resulting curve to calculate the surface area of the shape it might not be within a known tolerance. Similarly if you used it to be part of a CFD simulation the waviness could badly affect your results.
Most of the time CAD engineers want a smooth curve but it is difficult to mathematically explain how 'smoothness' is relevant to an analysis package (CFD, FE or whatever).
I hope all this makes sense but tomorrow if I get a chance I will do a few tests on my work machine to try out a few different curve fitting regimes.