Inventor General Discussion

Inventor General Discussion

Reply
Active Member
241victor
Posts: 7
Registered: ‎01-31-2012
Message 1 of 13 (353 Views)

Simple problem dynamic simulation

353 Views, 12 Replies
03-27-2012 01:24 AM

Hi

I am trying to move the red piece in the video. I want to rise up and move it down and also it stays in the same place but i dont know how to do it

 

http://www.youtube.com/watch?v=LBmaDMa40ns#ws


On the other hand:
i am also trying to lower the piece at the botton of the ramp in a kind of container

 

 

http://www.youtube.com/watch?v=B-vep-vIq8w#

 

I am spanish ¿can you understand me?

thanks u¡

New Member
jabirsaif
Posts: 2
Registered: ‎03-24-2012
Message 2 of 13 (344 Views)

Re: Simple problem dynamic simulation

03-27-2012 03:52 AM in reply to: 241victor

It looks like one of the pieces youre trying to move is grounded.

I don't know what the mechanism is exactly, but you need one reference grounded part.

You also need to add a 3D contact joint between the parts so that they don't intersect.

 

I hope this helps.

 

-Jabir

*Expert Elite*
JDMather
Posts: 26,544
Registered: ‎04-20-2006
Message 3 of 13 (338 Views)

Re: Simple problem dynamic simulation

03-27-2012 05:51 AM in reply to: 241victor

Can you attach your assembly here.

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
Active Member
241victor
Posts: 7
Registered: ‎01-31-2012
Message 4 of 13 (331 Views)

Re: Simple problem dynamic simulation

03-27-2012 06:57 AM in reply to: JDMather
Active Member
241victor
Posts: 7
Registered: ‎01-31-2012
Message 5 of 13 (319 Views)

Re: Simple problem dynamic simulation

03-27-2012 09:32 AM in reply to: jabirsaif

I dont understand you

 

I have recorded a video showing how i made the simulation .. ¿why the red piece dont follow the graph?. I want the piece come back to the original place 

 

http://www.youtube.com/watch?v=G34xcu4D4bg&feature=youtu.be

*Expert Elite*
JDMather
Posts: 26,544
Registered: ‎04-20-2006
Message 6 of 13 (311 Views)

Re: Simple problem dynamic simulation

03-27-2012 10:15 AM in reply to: 241victor

Looking at your Imput Grapher for the force - I don't understand what you are trying to do.

 

I suspect that what you really want to do is edit the Position of the Prismatic Joint.

 

See attached.

 

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
*Expert Elite*
JDMather
Posts: 26,544
Registered: ‎04-20-2006
Message 7 of 13 (307 Views)

Re: Simple problem dynamic simulation

03-27-2012 10:24 AM in reply to: JDMather

In your second problem I think you want a Spatial Joint and a 3D Contact Joint.

 

But before you get into an advanced topic like Dynamic Simulation I recommend you go through this document

 

http://home.pct.edu/~jmather/skillsusa%20university.pdf

 

I noticed that your part sketches are not constrained.

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
Active Member
241victor
Posts: 7
Registered: ‎01-31-2012
Message 8 of 13 (287 Views)

Re: Simple problem dynamic simulation

03-27-2012 01:47 PM in reply to: JDMather

okay thanks you

But I dont understand why the simulation time is not the same that the imput time grapher. In other words, i see that the imput grapher time doesn`t match with the simulation time, otherwise you`re downgrading the main force instead of putting it in a negative magnitude with the purpose of change the direction. Sorry about my bad english.  we want to simulate this industrial process:

 

http://www.youtube.com/watch?v=vten1EEODLA&feature=youtu.be  

 

it could be posible?, the pieces that i sent you were the 'drill' also i want to rotate the main table with holes, when the grey circular piece fall inside them using the ramp

Thanks for the manual it is very useful. I will read it tonight

*Expert Elite*
JDMather
Posts: 26,544
Registered: ‎04-20-2006
Message 9 of 13 (279 Views)

Re: Simple problem dynamic simulation

03-27-2012 04:20 PM in reply to: 241victor

I left the Force on your assembly - but that should be removed.

You want to activate the Position of the drill using the Prismatic Joint.

If you are intersted in the unkown forces - that is a secondary question.

I will see if I can get one of my students to take this on as a project.

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
Active Member
241victor
Posts: 7
Registered: ‎01-31-2012
Message 10 of 13 (246 Views)

Re: Simple problem dynamic simulation

03-30-2012 03:16 AM in reply to: JDMather

Thanks you for the help again. We have advanced a lot in the proyect. Now we got the main problem with the ramp. We want that the piece fall into one of the container in a horizontal position, as it is showed at the video.

The rest is done, we only want to solve ther ramp part. Your help is being very usefull.

 

Here is my proyect (Festo.iam):

http://dl.dropbox.com/u/18036283/festo.rar

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 or visit the Installation and Licensing Forum to get help installing your software.