Steel or Aluminum Armor?

Strength goes up by thickness squared rather than cubed, so it will lag behind the stiffness. (It will take a thicker piece of aluminum to match strength of steel than stiffness of steel). But we also have to account for yield stress of steel and aluminum now. (Hard to look all that up at moment, and I dont remember what I learned last time i did this exercise)

 

@BigWhiteTRD - thank you for indulging my curiosity.

 

No problem

Feel free to start another thread or just clog up this thread if you want to get deeper into it. (Stress analyst here, so yes this crap is interesting to me)