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Re: Motion Analysis



Thanks for you responce David Janes. 

After assembling with connections and motor i tried to run the
mechanism in mechanica it say

"Compilation failed. Additional information may be available from
outside of Pro/MECHANICA Motion by examining
the engine's log file. Exit Pro/MECHANICA Motion and type 'mmwatch'. 

Then I clicked ok after that. What I got was

"Failed while generating or compiling equations of motion for
'fourbar_linkage_mechanism_trial'.
This may be a system or installation problem."

Is this because of Pro/Engineer Educational Edition?

what is mmwatch? 

Thanks
Shankar.

"David Janes" <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>...
> "Shankar Venkateswaran" <[EMAIL PROTECTED]> wrote in message
> news:[EMAIL PROTECTED]
> : Hi There,
> : When I was tring to do motion analysis with 4bar mechanism as given in
> : the folowwing link
> : http://www.me.uvic.ca/~mech410/Tut2001/ProMMotion.pdf
> 
> The problem you are having, Shankar, is due to the tutorial being several revs out
> of date. Since this tutorial was written, large chunks of Motion have been moved
> into Assembly 'Connections' and Mechanism Design. The Assembly module is used to
> create the pin and other type connections and MD is used to create 'motors', apply
> loads and define motion characteristics, then use all this information to run
> analyses which can include pairs or global interference checking. The results of
> the analysis, using you motion definition, can be played back and even captured as
> an mpeg file. You can reuse the connections/motors/loads/motion definitions in
> Mechanica Motion, but no longer create them there.
> 
> So, back to the beginning. You should start with figuring out how to assemble
> parts to make them moveable. Your first part will be, by default, the ground or
> fixed part, the only non-moving one. It can be assembled using 'Automatic'
> constraints. The two links will be assembled using pin type connections in the
> Assembly 'Connections' interface. You have to click the arrow next to
> 'Connections' to reveal the inputs. The pin connection requires that an axis in
> each part be selected and that some planes be available for a mate/align type
> constraint. In other words, the parts so assembled may rotate about an axis but
> have no 'end play', no side to side motion. When the connection is good, Pro/e
> tells you the definition is complete. And you should be able to click on the
> 'Move' tab and set the movement to 'rotate', click on the link and drag it around
> in a circle. The only one that is sort of complicated is the sliding part which
> will have two connections: a slider connection to the base and a pin connection to
> the second link.
> 
> When the connections are set up, you go to 'Applications>Mechanism' to start MD
> and give your mechanism life.
> 
> David Janes



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