In order to evade the Writers can't do math and Sci-fi Writers have no sense of scale, I wish to use somewhat accurate models to simulate combat and injuries, that I can use to determine the power of the items and to an extent, their reputation in that world.
Things it needs to simulate:
A uniform way of determining the damage (force, pressure) of blunt, edged, and other weapons inflicted on the materials.
Optional: important modifying factors in the mechanical interaction (angle, etc...)
Determining an armor's defensive and other combat related properties, such as the "hit points" of the armor, weight properties, based on thickness, materials used in it, and the area it covers
What is the most accurate model that exist for simulating this (in the realm of classical physics)? If there's no such model, what models exist that cover one of these, that I could combine together?