I have been looking around for a bit. The Armor Resistance seems readily available, but I am unsure how much damage a piece of armor need to take before breaking. Are the total armor durability subjected to hull bonus/diminishing returns?

So for example

If I have 1 Ultraheavy armor, it can take up to 145 damage

If I have 2 Ultraheavy armor, will each piece have 145, for a total of 290? Or will it be affected by the 97%, or 140.65 each for a total of 281.3?

Second question

Is this the correct formula to figure out current armor resistant?

Current Armor Resistant = Total Armor Resistant*(Current Armor Durability/Total Armor Durability)

So if all my armor lose half it’s durability does that mean my armor resistant is dropped by half?

Thanks a lot if anyone can help.