SUCHA elements are intended to provide a bidimensional basis for the application of an axial force with an evenly distributed stress. The law is useful when conducting constant-load (such as creep tests). For more information check the element ot its corresponding constitutive law (LICHA - Colaw Nb.95) or the element law (SUCHA - Type 19) descriptions.

This law is used for mechanical analysis of elasto‑viscoplastic isotropic porous media undergoing large strains.