COMSOL Forums: helix with rectangular cross section.

Re: helix with rectangular cross section.

Sun, 18 Nov 2012 17:51:11 +0000

Guys, have you solved the problem? If so, can you please post the solution?

Thanks..

Re: helix with rectangular cross section.

Wed, 23 Nov 2011 05:39:03 +0000

Im worried, I need it for finished my thesis.....Bad

Re: helix with rectangular cross section.

Tue, 22 Nov 2011 22:20:03 +0000

I am having the same issue. Anytime I perform Boolean operations on an object created with sweep I get funny results - I think the surface normals are getting reversed on some of the faces. I sent a message into support, I'll post any fixes they are able to suggest.

Re: helix with rectangular cross section.

Tue, 22 Nov 2011 07:37:24 +0000

Hi vincent

your explanation was very successful, check it.

But I have other problem, i cant do difference between a cylinder and the agitator because disappears the figure.
I tried make a difference with each element and I realized that it can be for the sweep. I m not sure, have you any idea.

Thanks

P.D: Im doing a reactor and i want use rotating machinery model

Re: helix with rectangular cross section.

Thu, 10 Nov 2011 06:32:37 +0000

Sorry for that. Below is how I made it.

First is create a rectangular in a work plane.
Second, make a parametric curve to represent the helix curve, like (cos(4*s),sin(4*s),s).
Last, sweep the rectangular with parametric curve. Pay attention to uncheck the "twist compensation".

Re: helix with rectangular cross section.

Thu, 10 Nov 2011 01:22:30 +0000

ohh!

I have a problem, I get the following message: "model created with a later version of comsol"

could you tell me how to make the helix? have you any tutorial?

Re: helix with rectangular cross section.

Fri, 28 Oct 2011 07:38:10 +0000

thanks

Re: helix with rectangular cross section.

Fri, 28 Oct 2011 07:36:57 +0000

this one

Re: helix with rectangular cross section.

Fri, 28 Oct 2011 07:27:27 +0000

yes, is exactly that I need.

Re: helix with rectangular cross section.

Fri, 28 Oct 2011 06:32:23 +0000

Hi Jason:

Is this what you want? I made it by sweep a rectangle with a helix. If yes, I can upload the model.

helix with rectangular cross section.

Fri, 28 Oct 2011 06:07:00 +0000

hello

I need to know how to make a helical ribbon with rectangular cross-section.

thanks