Inventor General

Reply
Contributor
jonnyrotten
Posts: 20
Registered: ‎06-30-2010
Message 1 of 11 (909 Views)
Accepted Solution

adaptivity help

909 Views, 10 Replies
07-17-2010 08:07 AM

Hi there,

 

I am having a really difficult time trying to make a part adaptive. I will upload my assembly and parts in customer files as "adaptivity problem". I would really appreciate it if someone coud take a quick look at why my arrow won't become adaptive. I have set up an animation so that the assembly leans to 30 degress and i have an arrow that represents gravity that must stay perpendicular to the part called "road". As the assembly leans, I want the arrow to end on the road but if i constrain the arrow tip to the road, it throws up error messages when I try to animate in studio. Its as if the adaptivity isn't on but the part is adaptive and i have also made it adaptive in the assmbly. The assembly is called "assemblytest".

 

Any help would be greatly appreciated.

 

thanks

 

Jonny

*Pro
Dennis_Jeffrey
Posts: 1,369
Registered: ‎12-15-2003
Message 2 of 11 (894 Views)

Re: adaptivity help

07-17-2010 05:29 PM in reply to: jonnyrotten

 You can post your files here. No need for customer files. What version of Inventor are you using?

Please mark this response as "Accept as Solution" if it answers your question.
____________________________________________________________
Dennis Jeffrey, Author and Manufacturing Trainer, Autodesk Inventor Certified Expert
Autodesk Manufacturing Implementation Certified Expert
Autodesk Silver Manufacturing Partner

Subscribe to the free digital "The Creative Inventor Magazine" now available at: http://teknigroup....

XP64 SP2, GeForce 9800GT-1GB, Driver: 6.14.12.7061, 8GB Ram, AMD Athlon II 3.2 Ghz
Laptop: Win7-64 Pro, 4GB, ATI Graphics on board, 2012 Ultimate, IV2011 or 2010 Pro, all SP's
Contributor
jonnyrotten
Posts: 20
Registered: ‎06-30-2010
Message 3 of 11 (883 Views)

Re: adaptivity help

07-18-2010 02:23 AM in reply to: Dennis_Jeffrey

Oh, i presumed that is what it was for but i have attached my files here now. I'm using inventor 2010.

 

thanks

*Pro
Dennis_Jeffrey
Posts: 1,369
Registered: ‎12-15-2003
Message 4 of 11 (879 Views)

Re: adaptivity help

07-18-2010 03:47 AM in reply to: jonnyrotten

I do not have much time for this, but It looks like you have gone a wrong direction.  Gravity does not change,  The road may/will. The arrow should be the first part (Grounded) - no need for any constraints.

 

If the road angle changes then Gravity will stay the same. 

 

I am assuming there is some type of load on the wheels above the road. as a result, As a result, then Center of  Gravity for the separate subassembly (call it loaded vehicle) will be impacted by the direction of  Gravity. If the vehicle is in motion, then Centrifugal Force will also come into play.

 

Are you planning to calculate all forces?

Please mark this response as "Accept as Solution" if it answers your question.
____________________________________________________________
Dennis Jeffrey, Author and Manufacturing Trainer, Autodesk Inventor Certified Expert
Autodesk Manufacturing Implementation Certified Expert
Autodesk Silver Manufacturing Partner

Subscribe to the free digital "The Creative Inventor Magazine" now available at: http://teknigroup....

XP64 SP2, GeForce 9800GT-1GB, Driver: 6.14.12.7061, 8GB Ram, AMD Athlon II 3.2 Ghz
Laptop: Win7-64 Pro, 4GB, ATI Graphics on board, 2012 Ultimate, IV2011 or 2010 Pro, all SP's
Contributor
jonnyrotten
Posts: 20
Registered: ‎06-30-2010
Message 5 of 11 (877 Views)

Re: adaptivity help

07-18-2010 04:46 AM in reply to: Dennis_Jeffrey

Thanks for your reply,

 

No I am just showing the lean animation as part of a presentation and do not need to calculate forces. For disscussions sake, lets say that my arrow isn't gravity and its just a part, surely it should work as an adaptive part and one end of it could be constrained to the road and then shorten as the assembly leans?

 

I am not running this in dynamic simulation, just a simple animation with an adaptive part.

 

I have resultant and centrifugal forces but didn't include them in the uploaded assy as i am not stuck on those. Its only the arrow that I have included that isn't working.

 

Thanks for your advice.

*Expert Elite*
JDMather
Posts: 26,246
Registered: ‎04-20-2006
Message 6 of 11 (867 Views)

Re: adaptivity help

07-18-2010 08:06 AM in reply to: jonnyrotten

I noticed that your parts and assembly could probably be simplified quite a bit - extra workplanes and axis, sketches not constrained.

 

And watch out for this beginner mistake (see attached).  You tap drill size is incorrect.  If you used the Hole feature for threaded holes rather than extruded circles you would avoid making this mistake.

Please mark this response as "Accept as Solution" if it answers your question.
-----------------------------------------------------------------------------------------
Autodesk Inventor 2014 Certified Professional
Autodesk AutoCAD 2013 Certified Professional
Certified SolidWorks Professional
Inventor Professional 2015 64-bit
http://www.autodesk.com/edcommunity
http://home.pct.edu/~jmather/content/DSG322/inventor_surface_tutorials.htm
Contributor
jonnyrotten
Posts: 20
Registered: ‎06-30-2010
Message 7 of 11 (859 Views)

Re: adaptivity help

07-18-2010 08:57 AM in reply to: JDMather

Thanks for the input - thankfully i'm not going to be using these for manufacturing drawings so it doesn't really matter. There are many planes/axes because these parts are used in many assemblies and animations. There is no excuse for unconstrained sketches though!

 

I have attached a simple assembly - could someone please tell me why the arrow isn't behaving as an adaptive part even though adaptivity is turned on in both the part and the assembly? I should be able to change angle2 to 10 degress and the arrow should shorten as its adaptive but instead it gives conflicting contraints.

 

Thanks in advance

 

Jonny

 

 

Contributor
jonnyrotten
Posts: 20
Registered: ‎06-30-2010
Message 8 of 11 (844 Views)

Re: adaptivity help

07-18-2010 10:01 AM in reply to: jonnyrotten

I've got a little closer to the solution - the arrow doesn't seem to work as adaptive if its constrained to a work axis - it does work when it is constraint to parts. Anyone aware of this?

Employee
patrick.miller
Posts: 98
Registered: ‎09-24-2008
Message 9 of 11 (794 Views)

Re: adaptivity help

07-19-2010 11:47 AM in reply to: jonnyrotten

Using an adaptive work axis should be fine. From a quick look it appears the problem is that the work axis does not drive your sketch geometry and the axis is not adaptive. See the attached video for a possible solution. This does not solve the issues JD mentions, only the adaptivity question.



Patrick Miller
Senior Content Developer
Autodesk, Inc.

Valued Mentor
coreyparks
Posts: 479
Registered: ‎06-07-2010
Message 10 of 11 (789 Views)

Re: adaptivity help

07-19-2010 11:59 AM in reply to: jonnyrotten

Try this out.  I made a new arrow.

Please mark this response "Accept as solution" if it answers your question.
-------------------------------------------------------------------------------------
Corey Parks
IV2014 Factory Design Suite Ultimate
Windows 7 64 bit
Synergis Adept document management software
16gb RAM --- Nvidia Quadro 4000 2gb

You are not logged in.

Log into access your profile, ask and answer questions, share ideas and more. Haven't signed up yet? Register

Announcements
Are you familiar with the Autodesk Expert Elites? The Expert Elite program is made up of customers that help other customers by sharing knowledge and exemplifying an engaging style of collaboration. To learn more, please visit our Expert Elite website.

Need installation help?

Start with some of our most frequented solutions to get help installing your software.

Ask the Community


Inventor Exchange Apps

Created by the community for the community, Autodesk Exchange Apps for Autodesk Inventor helps you achieve greater speed, accuracy, and automation from concept to manufacturing.

Connect with Inventor

Twitter

Facebook

Blogs

Pinterest

Youtube