Terminology - Second moment of area

Hi all,

Where I went to school we used a quantity called second moment of area to give us information about a sections profile for bending calculations. (=BD³/12 for rectangular sections).

The people who wrote Pro E however, must have gone to a different school as this quantity is not displayeed in their section properties.

Is that what the Area moment of inertia is?

Cheers

Hayden

> Is that what the Area moment of inertia is?

Yep, that's the one.

The "moment of inertia" and "second moment of area" are one in the same thing.  Most textbooks I have seen use the term "moment of inertia" more often.

I always use and was tought "moment of Inertia" on this one. Didn't know there were other names :-p

Cyril Guichard
Mechanical Engineer

Location, location, location.

I'm from New Zealand and now living in the UK. Here they call it second moment of area too.

'seems everyone is correct... You can change the units displayed by setting up a user defined set of units for the part.
Setup --> units.  From here you are able to set the units for each type of measurment.  Now recalculate the model analysis and you will see the units that you are familiar with using.