Plaxis is a range of finite element packages intended for 2D and 3D analysis of deformation, stability and groundwater flow in geotechnical engineering.
Geotechnical applications require advanced constitutive models for the simulation of the non-linear and time-dependent behaviour of soils. In addition, since soil is a multi-phase material, special procedures are required to deal with hydrostatic and non-hydrostatic pore pressures in the soil. Although the modelling of the soil itself is an important issue, many geotechnical engineering projects involve the modelling of structures and the interaction between the structures and the soil. Plaxis is equipped with special features to deal with the numerous aspects of complex geotechnical structures.

E-Plaxis: the interactive Plaxis Bulletin