Trigonometric Functions... is this possible??

[naresh_kalyan]

Greetings!!!

Creating User Parameters, can we use trigonometric functions? and can we add these to linear (mm) parameters?

Can we add the Values irrespective of Units i.e. Inch/ Deg/ Unitless

Example: d0 (In) = d1 (In) +d3[ul] + (sin(Variable_Angle))

In value = In Value + ul Value + deg Value

Thanks in advance.

[SBix26]

You cannot mix units.  So in your equation, you will need to do something like this:

  d0 = d1 + 1 in * (d3 + sin(Variable_Angle))

Note that a sine is a ratio and therefore has no units.

Sam B
Inventor 2012 Certified Professional

Please click "Accept as Solution" if this response answers your question.
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Inventor Professional 2013 SP1.1 Update 2
Windows 7 Enterprise 64-bit, SP1
HP EliteBook 8770w; 8 GB RAM; Core™ i7-3720QM 2.60 GHz; Quadro K4000M
SpaceExplorer/SpaceNavigator NB, driver 3.16.2
still waiting for a foreshortened radius dimensioning tool in Drawing Manager

[tuliobarata]

Yes, you can use trigonometric functions, you just need to have some caution with units, to sum them like you shows, the units must be the same.

Túlio

[JDMather]

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@sbixler wrote:

You cannot mix units.   

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You can mix units as long as the resulting equation makes sense - just like writing it out by hand.

The resultant value must have a single unit (or unitless (ul)) depending on logic.

[jdavis417]

I had to do something to figure arc length a few years ago (I think the capability has been added to the software since).  As a follow-up question, am I remembering correctly that I was forced to use Radians rather than degrees?

I could be mis-remembering... 😉

[SBix26]

I don't know about "forced" (can't remember last month, let alone a few years ago!), but using radians makes working with arc lengths a lot simpler.

Sam B
Inventor 2012 Certified Professional

Please click "Accept as Solution" if this response answers your question.
-------------------------------------------------------------------------------------
Inventor Professional 2013 SP1.1 Update 2
Windows 7 Enterprise 64-bit, SP1
HP EliteBook 8770w; 8 GB RAM; Core™ i7-3720QM 2.60 GHz; Quadro K4000M
SpaceExplorer/SpaceNavigator NB, driver 3.16.2
still waiting for a foreshortened radius dimensioning tool in Drawing Manager

[JDMather]

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@jdavis417 wrote:

I had to do something to figure arc length a few years ago (I think the capability has been added to the software since).  As a follow-up question, am I remembering correctly that I was forced to use Radians rather than degrees?

I could be mis-remembering... 😉

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I have posted arc-length solutions here (prior to 2013) that did not require using radians rather than degrees.

http://forums.autodesk.com/t5/Autodesk-Inventor/Dimension-Arc-Length/m-p/3095050/highlight/true#M408...