does the spline interpolate badly the points?

[alex369]

hi forums,
to import points into a new part, I used the excel macro relative to the file "gsd_pointsplineloftfromexcel.xls" and, always thanks to the macro, I tracked the spline that interpolated these points.
Unfortunately, the result is what you see in the figure:How come the spline interferes badly my points? seems like a polygonal...
Thank you in advance who will help me solve the problem!

 

[Lettore espatriato]

Hi.
1) Have you checked that it is not "only" a graphic problem ? if you do the bending analysis with the "porcospino" always turns out to be "pieces" ? in case you look in tool/option/general/performance/. . .
2) is it a spline or a polyline?
3) increase the points through which to pass the spline?
4) in practice, to make things work better, it usually splits the profile into 5 parts. two superiors, two lower and you. not all upper (or lower) profile in one spline.

 

[alex369]

Hi.
1) Have you checked that it is not "only" a graphic problem ? if you do the bending analysis with the "porcospino" always turns out to be "pieces" ? in case you look in tool/option/general/performance/. . .
2) is it a spline or a polyline?
3) increase the points through which to pass the spline?
4) in practice, to make things work better, it usually splits the profile into 5 parts. two superiors, two lower and you. not all upper (or lower) profile in one spline.

1) is not a problem of graphics because if I amount only the points and try to make us pass the spline, it gives me the same result. Now I try to do this analysis with "porcospino" (which I never used before). .
2) a spline
3) and how do I create other points?
4) but is this subdivision "conventional"?

 

[alex369]

I have opened tools/options/general but I have not understood where to find this porcupine for the analysis of the curvature

 

[Lettore espatriato]

I have opened tools/options/general but I have not understood where to find this porcupine for the analysis of the curvature

no below you find the settings to make the curve "fluid".
It is usually found in the lower right, along with the tangency checks, with the active gsd environment.
if you look at the online guide there is .

 

[Lettore espatriato]

1) is not a problem of graphics because if I amount only the points and try to make us pass the spline, it gives me the same result. Now I try to do this analysis with "porcospino" (which I never used before). .
2) a spline
3) and how do I create other points?
4) but is this subdivision "conventional"?

1) if it is a graphic problem, no matter whether it is you or the program to pass the spline by n points; if you draw a circle (more or less of the same size) as it represents it? circle or octagon/hexagon/etc.. ?
3) don't create points anymore.
4) from the top of the profile, then from that to you. you as separate segment. if then you have to do cfd analysis add other bets, but later.

 

[Lettore espatriato]

I forgot. for the cfd analysis you should then split up by layer, so that according to the layer the mesh is made more or less thick.

 

[alex369]

1) if it is a graphic problem, no matter whether it is you or the program to pass the spline by n points; if you draw a circle (more or less of the same size) as it represents it? circle or octagon/hexagon/etc.. ?
3) don't create points anymore.
4) from the top of the profile, then from that to you. you as separate segment. if then you have to do cfd analysis add other bets, but later.

Meanwhile thank you very much for your help.

1) how do I understand if it is a graphic problem?
3) for my profile I have 103 points for the back and 103 for the belly. How do I get her through multiple points?
4) now I immediately try this dissection (for now I do not have to use it for a cfd analysis)

 

[alex369]

I wanted to edit the previous message not to write two consecutive ones but I am not enabled, so I write here...

actually looks like a visualization problem, as I imported 5 points:
(1;0)
(0;1)
(-1;0)
(0;-1)
(1;0)
to trace a circumference with a spline and the result is this below. How can I solve this?

 

[gianni55]

to improve graphics (as already suggested by expat reader):

menu-struments-options-general-view-performance
3d precision:
check mark on "fix", value to be inserted in the field: 0.01
precision value of curves: 0.10


after setting the parameters restart the session

for porcupine analysis:
menu-iser-analysis-analysis of curved porcospino

be careful not to smell

Hi.