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helix with rectangular cross section.

Posted 2011年10月27日 GMT-4 22:07 Geometry, Studies & Solvers Version 4.1, Version 5.2a 10 Replies

Jason Castro
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hello

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

thanks
10 Replies Last Post 2017年3月27日 GMT-4 04:48
Vincent Zhang
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Posted: 1 decade ago 2011年10月27日 GMT-4 22:32
Hi Jason:

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

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Jason Castro
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Posted: 1 decade ago 2011年10月27日 GMT-4 23:27
yes, is exactly that I need.
yes, is exactly that I need.
Jason Castro
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Posted: 1 decade ago 2011年10月27日 GMT-4 23:38
thanks
thanks
Jason Castro
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Posted: 1 decade ago 2011年11月9日 GMT-5 15:22
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?

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?
Vincent Zhang
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Posted: 1 decade ago 2011年11月9日 GMT-5 20:32
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".
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".
Jason Castro
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Posted: 1 decade ago 2011年11月21日 GMT-5 21:37
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
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

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Michael Norton
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Posted: 1 decade ago 2011年11月22日 GMT-5 12:20
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.
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.
Jason Castro
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Posted: 1 decade ago 2011年11月22日 GMT-5 19:39
Im worried, I need it for finished my thesis.....Bad
Im worried, I need it for finished my thesis.....Bad
Muhammad Mohsin Rehman
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Posted: 1 decade ago 2012年11月18日 GMT-5 07:51
Guys, have you solved the problem? If so, can you please post the solution?

Thanks..
Guys, have you solved the problem? If so, can you please post the solution? Thanks..
Jose Bellosta von Colbe
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Posted: 8 years ago 2017年3月27日 GMT-4 04:48
Sorry to bother you with this; the posting is quite old but it is exactly what I need. However, I don't seem to get exactly the same in 5.2a as the image 123.png posted here. Would you mind posting a more detailed explanation on how to sweep the rectangle to get the helix and with which parameters you did it? I am a complete newbie and still have problems with basic things; sorry.

Thanks in advance,
Sorry to bother you with this; the posting is quite old but it is exactly what I need. However, I don't seem to get exactly the same in 5.2a as the image 123.png posted here. Would you mind posting a more detailed explanation on how to sweep the rectangle to get the helix and with which parameters you did it? I am a complete newbie and still have problems with basic things; sorry. Thanks in advance,

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