Are stress and pressure additive?

[pyroknife]

If we have some pressure/stress (say 1 atm) applied to an end of a square rod. Let's say this square face expression this pressure/stress is discretized into 4 squares of equal area. Each each sub-square experience 1 atm or 1/4 atm?

 

[mfb]

Pressure and stress are "force per area". If the force per area is the same everywhere, you have the same pressure or stress.

 

[pyroknife]

Pressure and stress are "force per area". If the force per area is the same everywhere, you have the same pressure or stress.

Oh, so each face would be experiencing 1 atm?

 

[mfb]

Each point will experience this pressure.