Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type.

Showing results for

- Navigation
- NX Design
- Forums
- Blogs
- Knowledge Bases
- Groups

- Siemens PLM Community
- NX Design
- NX Design Forum
- equal area constraint in sketch?

- Start Article
- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Printer Friendly Page

equal area constraint in sketch?

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

01-09-2018 09:47 AM - edited 01-09-2018 02:27 PM

In NX sketcher, various constraints provide a very flexible tool to control the size dependence of geometries.

I know that a triangle can be used to constrain the length of two lines to a fixed ratio.

Since long I'm thinking about whethe it's possible to **constrain the area of two sketch geometries to be equal**, using ONLY geometric constraints but NOT expressions. E.g. the square and the rectangle in the figure below. If this is possible, the lengths (a, b, c) of three lines can be constrained to: **a×a=b×c**

Hope to have some clues from you. Thanks!

Labels:

4 REPLIES 4

Re: equal area constraint in sketch?

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

01-10-2018 11:21 AM

This is not possible, but a good ER candidate.

Regards, **bleep**

Regards, **bleep**

Re: equal area constraint in sketch?

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

01-10-2018 11:32 AM

Hi @DickBaardse Thanks! If it's impossible, let me forget it and settle on the use of expressions.

Re: equal area constraint in sketch?

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

01-10-2018 12:56 AM

NX can use a spreadsheed to calculate data. There is a function in Excel called "Goal Seek".

( see https://docs.plm.automation.siemens.com/tdoc/nx/10/nx_help/#uid:tools_tls_spd_mod_gs_ov_r)

The spreadsheet can do the work for you to find a parameter combination for area2 to make it the same size as area1.

Excel changes a parameter, checks if it is now closer to a required solution, and changes the parameter again.

Wolfgang

Re: equal area constraint in sketch?

- Mark as New
- Bookmark
- Subscribe
- Subscribe to RSS Feed
- Permalink
- Email to a Friend
- Report Inappropriate Content

01-10-2018 01:15 AM

I would need to learn how to manage data with spreadsheet in NX first. Thanks for the information!

Follow Siemens PLM Software

© 2019 Siemens Product Lifecycle Management Software Inc