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Mass Properties Interpreting Pro-E Results

Mass Properties Interpreting Pro-E Results

Mass Properties Interpreting Pro-E Results

(OP)
Hi,

I studied as product designer but have become more of a mechanical engineer working in oil and gas.  My mathematical knowledge is severely lacking so please bear this in mind if you are kind enough to help.

I have drawn an air duct heater and want to work out the weight of the duct itself, it is made from 316L and weighs 7970kg/m³ according to Sandvik having entered this information into Pro-E, this is what the mass properties report has kicked out:

VOLUME =  5.3890440e+06  MM^3
SURFACE AREA =  3.6075821e+06  MM^2
DENSITY =  7.9700000e-09 TONNE / MM^3
MASS =  4.2950681e-02 TONNE


What I what is the overall weight in kg and i don't know what 'e+06' or 'e-09' mean and how to translate into something I recognise.

 

RE: Mass Properties Interpreting Pro-E Results

e+06 is X 10 to power of 6 or by 1000000  .  It is scientific notation.

http://en.wikipedia.org/wiki/Scientific_notation

Cant remember my ProE but I am sure there is a setting to have mass in Kg instead of Tonne.  Probably to simply convert in your head.  1 Tonne is 1000 Kg   or 4.29X10^-2 is 42.9 Kg

I think.

RE: Mass Properties Interpreting Pro-E Results

Basically, the conversion could be made like this:
- for volume: 5.3890440e+06 mm^3 means 5389044 mm^3
- for surface area: 3.6075821e+06 mm^2 means 3607582.1 mm^2
- etc.
so for e+06 you multiply the value with 1000000, for e-09 you have to divide the value by 1000000000, etc.
The straight answer to your question is: the "measured" weight in kg would be 42.950681kg.
Hope I could help.

RE: Mass Properties Interpreting Pro-E Results

(OP)
Thanks for your replies, now it is explained, like all these things,  it seems like I should of of known.

This is my first Eng-Tips question and am really happy with the responses thanks asimpson and Mechv5.

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