New FMI Specification 2.0.4 released Functional Mock-up Interface

The leading standard to exchange dynamic simulation models

The Functional Mock-up Interface is a free standard that defines a container and an interface to exchange dynamic simulation models using a combination of XML files, binaries and C code, distributed as a ZIP file. It is supported by 170+ tools and maintained as a Modelica Association Project.

Getting started

Jupyter notebooks are a great way to work with FMUs. Join us for an interactive tour of the FMI.

open Juypter notebook

Implement the FMI

The Reference FMUs are a free reference implementation of both FMI import and export and a starting point for development, testing and debugging.

view project on GitHub

What users say about FMI:

"FMI is the preferred model exchange and co-simulation format of Robert Bosch GmbH at system level enabling the exchange of models with internal and external partners using different modelling tools."

"Driving our future is all about scalable solutions. The use of the FMI standard scales our capabilities to virtual integrate our scalable braking systems with customers’ and partners’ systems of systems."

"Supported by Siemens from the beginning, FMI is becoming an important building block in the efficient creation of interdisciplinary, multi-level digital twins of our entire portfolio - from rail and gas turbine engineering to virtual commissioning in the process industry and operational support in manufacturing plants."

"With the ever increasing use of models in aircraft system development, tool interoperability and model reuse are central challenges. At Saab we see the FMI standard as an enabler for scalable and tool neutral integration of simulation models from different technical disciplines, developed by different internal teams or by external partners."

Open source

FMI is open source. Be part of the FMI community and help improve our code, documentation and website.

Fork on GitHub