Changing Units

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Permalink Reply by Michael Freytag on February 15, 2012 at 11:23pm

Nick,

Unfortunately, there isn't currently a way to change the analysis units once they've been established.

You can explode the model to clear out the Scan&Solve data and join it back together to establish the new units.  Of course you'll have to re-apply the restraints, loads and other settings.

Out of curiosity, if Scan&Solve would modify the analysis units to always match the Rhino units (scaling the loads into the new units), would this be acceptable behavior?

~Michael

EDIT:  See my reply below.

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Permalink Reply by Bob Johansson on February 26, 2012 at 6:29pm

HI:

 

It sounds like Scan and Solve is missing a "clear results" command which

clears the current analysis results without having to re-apply the loads, contraints

or other settings.

 

So you would clear the current analysis results.

Change the units

Then do a new analysis

 

Thx,

 

Bob

 

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Permalink Reply by Michael Freytag on February 27, 2012 at 11:27am

All,

Regarding "clear results," the [Purge] button on the Specify tab will clear solution results.  It won't do anything for changes in units.

Try the latest version (1.4.1.8).  It checks for a change in units in the Rhino document and prompts the user for guidance.  It will also warn if unsupported length units are being used to model the geometry.

~Michael

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Permalink Reply by Nick on February 27, 2012 at 5:56pm

Thanks Michael. Since this is probably a rare occurrence it isn't necessary to have a feature for changing units.

Maybe a units item in the results tab and displaying the reaction forces will be enough to alert users to any inconsistencies. I only picked up on it when I checked the weight of the item. Those things are our human checks to see if it is being modelled and solved correctly, they're things that a computer can't really comprehend.

regards,

Nick.

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