!!!!!!!!!!!DENSITY VALUE IN MASSPROP!!!!!!!!!!!!!!!!!

[RANDY38309]

DOES ANYONE KNOW HOW I CAN CHANGE THE DENSITY
VALUE IN ACADR13C4. I AM GETTING A VALUE IN CU INCHES.
WOULD LIKE TO CHANGE TO CU LBS. BUT HAVE TO CHANGE THE DEFAULT
DENSITY VALUE.??????????
ANY BODY WITH ANY LITERATURE ON THIS PLZ CONTACT ME
561-994-3838 RANDY RIVERA.
RANDY RIVERA

[Edwin Phillips]

Where I come from, density is not expressed in CU INCHES or CU LBS.
Density is a measure of mass per unit volume. ie. LBS/CU INCH, G/CC,
KG/m^3, etc.

[Dennis Shinn]

Edwin Phillips <ephi...@erols.com> wrote:

>Where I come from, density is not expressed in CU INCHES or CU LBS.
>Density is a measure of mass per unit volume. ie. LBS/CU INCH, G/CC,
>KG/m^3, etc.

The problem is, Edwin, the mass of an ACIS solid is returned as 1 for each unit
of volume. Thus mass and vlume have the same value returned by the massprop
command. It's rather confusing.

But you're right in that density determines mass which is governed by the volume
so it's possible to convert the figures that AutoCAD returns to get the values
needed.

Dennis Shinn
Seattle AutoCAD User Group
CAD Systems manager/GLY Construction
(remove "!" from return address for replies)

[Dennis Shinn]

randy...@aol.com (RANDY38309) wrote:

>DOES ANYONE KNOW HOW I CAN CHANGE THE DENSITY
>VALUE IN ACADR13C4. I AM GETTING A VALUE IN CU INCHES.
>WOULD LIKE TO CHANGE TO CU LBS. BUT HAVE TO CHANGE THE DEFAULT
>DENSITY VALUE.??????????

When you issue the massprop command you get an option to write the values to a
file. Write the information to a file then read it back in extracting the
density then convert the cubic inch volume to density using a conversion factor
for the material from which the model is created.

In R13, mass and density are not configurable like they were in AME/R12.