Many problems related to high-speed interaction with soil represent an interesting area of ​​research. For example, the fall of heavy objects on the ground surface not only creates a dynamic impact effect, but can also serve as an effective method of soil compaction under future foundations of buildings and structures. This process, along with the penetration of objects into the soil, poses new challenges for researchers. The most accurate results in these complex scenarios can be obtained by using a nonlinear dynamic formulation, which allows for a deeper understanding of the interaction mechanisms and ensures the reliability of structures under extreme loads. This requires using appropriate modeling approaches. In addition, under such an impact, the soil exhibits the properties of a liquid or gas, so it is necessary to use special soil models. The paper presents the main basic relationships and main parameters of soil models required for dynamic calculations of soils, which can be useful in modeling the operation of a soil massif in modern software packages.

Keywords: physical nonlinearity, damping, soil, foundation of buildings and structures, dilatancy, soil compaction, pore pressure, soil density, deformation modulus, numerical soil model