Offset surface creation

#1 Posted: 10/10/2021 12:20:33 PM

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Offset surface creation
An initial surface is given, given by the "createmesh" function, which forms a
network with nodes.
Dyou want to create an offset surface, offset by an amount h from the initial.
The direction of displacement surface epends on the sign of h.
Sequence of calculation:
1.Restoring the normal from the nodal points of the initial surface and we get
the nodal points of the displaced surface.
2.We connect the resulting node points
The image is built on three-dimensional graphics and can be rotated with the mouse

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Andrey Ivashov 10/19/2021 1:48:00 PM, Oscar Campo 10/20/2021 6:42:00 PM, Davide Carpi 10/20/2021 8:27:00 AM, Alvaro 10/10/2021 8:58:00 PM

#2 Posted: 10/19/2021 11:54:16 AM

Renzo Choque

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Thank you, this is helpful.
I have a question, How did you put the icon with the link?

#3 Posted: 10/19/2021 1:58:45 PM

Fridel Selitsky

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Hi,Rezorex.I put the icon with the link using the "hyperlink" insert.
Here is a link to an article from Mapleprimes
https://www.mapleprimes.com/posts/211000-Preparing-A-Parametrized-Surface-For

#4 Posted: 10/20/2021 5:22:00 AM

Alvaro

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Hi. Thanis Ber. A slightly different version, using only parametric functions.

Offset surface creation.sm (73.49 KiB) downloaded 1451 time(s).

Offset surface creation.pdf (917.17 KiB) downloaded 960 time(s).

Best regards.
Alvaro.

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Davide Carpi 10/20/2021 8:27:00 AM, Fridel Selitsky 10/20/2021 8:34:00 AM

#5 Posted: 10/20/2021 9:45:16 AM

Fridel Selitsky

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Thanks Alvaro, I continue to learn from you.
Fridel.

#6 Posted: 10/20/2021 1:31:05 PM

Fridel Selitsky

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Converting Surfaces to Solids
The solid is formed from the initial surface, the offset surface, and the
lateral surface that connects them. The lateral surface is formed by normals
reconstructed from the boundary nodal points of the initial surface.
Solid.sm (36.96 KiB) downloaded 1454 time(s).
Solid.pdf (309.58 KiB) downloaded 842 time(s).

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Alvaro 10/20/2021 11:56:00 PM

#7 Posted: 10/20/2021 8:43:17 PM

Jean Giraud

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Thanks ► Fridel, Alvaro
I don't have the courage to convert SS 6179 ... OK.
Keep up ... Jean.

Rotate 3D TREASURY_2 Parametric Explorer.sm (33.72 KiB) downloaded 1444 time(s).

#8 Posted: 10/21/2021 4:31:50 AM

Alvaro

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Wrote
Converting Surfaces to Solids

Hi Fridel. Thanks, great job. In the attached an alternate mesh. Its advantage is that it consists of a single coordinate matrix, so it can be manipulated more easily, with translations, rotations and deformations. As disadvantages, it does not look so good and there may sometimes be a wrong line, but I guess only one.

pSolid_alternate_mesh.sm (51.99 KiB) downloaded 1385 time(s).

pSolid_alternate_mesh.pdf (391.97 KiB) downloaded 791 time(s).

Best regards.
Alvaro.

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Fridel Selitsky 10/21/2021 5:07:00 AM

#9 Posted: 10/24/2021 11:47:27 AM

Fridel Selitsky

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Normal to the surface on Rezonar's triangular mesh
NorSurAlvaro.sm (49.33 KiB) downloaded 1488 time(s).
NorSurAlvaro.pdf (623.77 KiB) downloaded 837 time(s).

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Alvaro 10/24/2021 11:40:00 PM

#10 Posted: 10/24/2021 2:59:18 PM

Jean Giraud

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By same token, did you manage constructing Delaunay ?
We had no chance in Mathcad. Cheers ... Jean.

#11 Posted: 10/25/2021 10:06:52 PM

Alvaro

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Hi. The same but with a different version for the triangular mesh.

NorSurAlvaro v2.sm (77 KiB) downloaded 1398 time(s).

Best regards.

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Davide Carpi 10/26/2021 2:08:00 PM, Fridel Selitsky 10/25/2021 10:55:00 PM

#12 Posted: 10/26/2021 12:44:19 AM

Fridel Selitsky

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Examples of meshes with vertices
Nodes.sm (49.04 KiB) downloaded 1466 time(s).

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Davide Carpi 10/26/2021 2:08:00 PM, Alvaro 10/26/2021 5:20:00 AM

#13 Posted: 10/26/2021 11:35:04 AM

Fridel Selitsky

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Animation with triangular meshes
pTriMeshAnimat.sm (22.68 KiB) downloaded 1421 time(s).

2 users liked this post

Alvaro 10/26/2021 12:24:00 PM, Davide Carpi 10/26/2021 2:08:00 PM

#14 Posted: 11/11/2021 6:54:12 AM

Fridel Selitsky

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Creating surface thickness with triangular meshes
thickness.sm (56.02 KiB) downloaded 1494 time(s).
thickness.pdf (732.98 KiB) downloaded 858 time(s).

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Offset surface creation

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