The distorted "Parallel Curve" controlled by Law?

[cforall]

The Law definition, whose reference is the y axis:

The curve before(the brown one) and after the "parallel curve with law" operation:

Zoom in on a little portion of the paralleled curve: ( you can see the distorted fillets )

I will appreciate any explanations you could give!

 

[cforall]

Sorry for the missing images, just check the following links to see them:

http://lh3.googleusercontent.com/-h...AAANE/pwZ5aLXnReg/s800/the_law_definition.jpg

http://lh3.googleusercontent.com/-X...AAAMw/10sFiyHx_aQ/s800/the_parallel_curve.jpg

http://lh4.googleusercontent.com/-Z...kRacBP0/s800/the_magnified_parallel_curve.jpg

 

[Azrael]

Which release and could you upload the model?

 

[cforall]

I will upload the part Monday since its on company's desktop. The part was created by R21SP3, a pretty new release, is there any chance for you to check it?

btw: May I know how to insert images in the post, anything wrong about this format:

?

 

[rstupplebeen]

Could you post your model? I am interested in seeing the intricacies of what you did.

For the pic change "getfile" to "download".

Rob Stupplebeen

https://sites.google.com/site/robertkstupplebeen/

 

[cforall]

Here it is.

 

[ferdo]

I don't know if is still good this explanation how to insert pictures in the post, see

http://www.eng-tips.com/viewthread.cfm?qid=127497

Regards
Fernando

https://picasaweb.google.com/102257836106335725208

 

[itsmyjob]

I used law & parallel curve in the past and I found that sometime curvature is somewhat not what I expected. so I worked at a dif. scale and I could see some change. The trick is to find the right ratio.

 

[rstupplebeen]

Thanks!

Rob Stupplebeen

https://sites.google.com/site/robertkstupplebeen/

 

[Azrael]

Sorry to say but I don't have a good solution... I turned on the "x parameter on definition" option in the law feature and removed the curvature issues but the aspect ratio looks weird.

 

[cforall]

I have got a feature of "Parallel Curve" of R17 version and I added it directly to the R21 part by copy 'n' paste, then I changed its law and input curve (with upgrading it) like what I did to the one of R21 version, the result turned out unbelievable perfect!

Why did Dassault changed the algorithm of "Parallel Curve" in this way?

I will post the related part if anyone here interested.