VOLUME NX3
VOLUME NX3
(OP)
Friends
I tried to use volume values in the expression chart for calculating a height in other sketch (h=Vol/Diam^2*Pi/4)however when I change other dimension, the program launch an error message and all the archive "die".
Some one of you combine volume values in a similar case?
Thanks for your help.
I tried to use volume values in the expression chart for calculating a height in other sketch (h=Vol/Diam^2*Pi/4)however when I change other dimension, the program launch an error message and all the archive "die".
Some one of you combine volume values in a similar case?
Thanks for your help.





RE: VOLUME NX3
h=Vol/(Dia^2)*(pi()/4)
Anyway, attached is a simple model doing what it appears that you are asking about (edit the size of the Cylinder and the sketch updates).
John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.org/museum/
To an Engineer, the glass is twice as big as it needs to be.
RE: VOLUME NX3
I wrote this formula and still launch: "Error recovery completed for the following error: There is an object which depends on itself", it happens when I change a value from other sketch.
RE: VOLUME NX3
I omit some steps for my question:
1.-I made a sketch (1) (rectangle)
2.-revolved this feature
3.-calculate volume
4.-add value in an expressions chart
5.-I made other sketch (2) (rectangle)
6.-apply formula to calculate height using the calcutlated volume (h=Vol/(Dia^2)*(pi()/4))
When I change other value in the first sketch the program launch the error message.
RE: VOLUME NX3
RE: VOLUME NX3
From looking at your equation I get the feeling that you may be trying to create a 'cylinder' whereby if you edit it's diameter, that you want it's height to change based on the volumn change which resulted from the change in diameter. Sorry, but that won't work.
Now if this is an attempt to 'optimize' some aspect of a model, there are ways to do that, either by purchasing the 'Optimization Wizard' (and extra cost item) or by using the 'goal seek' feature in the Modeling Spreadsheet (which is a 'freebie').
John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.org/museum/
To an Engineer, the glass is twice as big as it needs to be.
RE: VOLUME NX3
when I drew the first sketch I add width and height to calculate volume.
In the second sketch I only used the volume for the first sketch when the sketch was created.
RE: VOLUME NX3
Thanks for your help, and its a shame that NX3 doesn´t work in this aspect.
I will try to change the modeling estrategy.
Thanks a lot for your comments
Tom
RE: VOLUME NX3
John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.org/museum/
To an Engineer, the glass is twice as big as it needs to be.
RE: VOLUME NX3
Sorry, but in the company we can´t send files in our e-mails. (law restrictions).
But I´m glad whit your help.
RE: VOLUME NX3
John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.org/museum/
To an Engineer, the glass is twice as big as it needs to be.
RE: VOLUME NX3
I have the solution, instead of using a circular reference, I wrote:
(((DIAM1)^2*(pi()/4))*LONG)/(DIAM1*2)^2*(pi()/4)
And it works very well! instead of using the volume from expressions chart, those commands calculated de volume for the first sketch and height in the other sketch without corrupt the file.
RE: VOLUME NX3
John R. Baker, P.E.
Product 'Evangelist'
Product Design Solutions
Siemens PLM Software Inc.
Industry Sector
Cypress, CA
http://www.siemens.com/plm
http://www.plmworld.org/museum/
To an Engineer, the glass is twice as big as it needs to be.
RE: VOLUME NX3
DIAM1 - ONLY IN SKETCH 2 to calculate volume of sketch 1.
Thanks for your help. its time to leave the office
See you
Tom