The MS-ESSI Simulator ( Modeling and Simulation of Earthquakes, and/or Soils,
and/or Structures and their Interaction) (also known as The Real ESSI
Simulator), is a software, hardware and documentation system for high (or any
selected level of) fidelity, high performance, time domain, nonlinear/inelastic,
deterministic or probabilistic, 1D, 2D or 3D, finite element modeling and
simulation of

statics and dynamics of soil,
statics and dynamics of rock,
statics and dynamics of structures,
statics of soil-structure systems, and
dynamics of earthquake-soil-structure system interaction.

The MS-ESSI Simulator systems is used for the design and assessment of
static and dynamic behavior of infrastructure objects, including
buildings, bridges, dams, nuclear installations, tunnels, etc