porakennematriisit
Porakennematriisit are a concept primarily encountered in the field of materials science and engineering, specifically relating to the behavior of porous materials under stress. They are a mathematical representation used to describe how the mechanical properties, such as stiffness and strength, of a porous material are influenced by the presence, size, shape, and distribution of pores within its structure. Essentially, a porakennematriisi helps to quantify the degradation or modification of the bulk material's properties due to its internal porosity.
These matrices are often derived from micromechanical models or finite element analyses that simulate the stress