I am not an engineer. I would like to know how to calculate the moment capacity of a square hollow section.

I know how to calculate the moment of inertia, and I know Young's Modulus for the aluminium alloy the SHS is made of.

**Can anyone tell me the formula for calculating moment capacity, given moment of inertia and Young's Modulus?**

Also, if I am creating a new material to use in Soldiworks simulation, **which values do I need to enter in order to obtain accurate results in the simulation?** I don't see Young's Modulus on the list of properties.

Thanks in advance!

Chad,

Young's modulus is Elastic Modulus in the Solidworks material properties.

The maximum moment for your HSS in bending doesn't technically factor in the moment of inertia. The moment of inertia comes into the play if you were trying to calculate the bending stress or maximum deflection in the beam. The code will dictate what the allowable capacity is but many times the code will specify an allowable deflection in terms of the length of the beam such as L/360.

And you'll want to make sure the Elastic Modulus and Poisson's ratio are accurate for any materials you plan to use in Simulation

Intro to FEA

Hope this helps,

-Taylor