Modelica Standard Library - Version 3.2.3

Package Contents


User's Guide


Library of basic input/output control blocks (continuous, discrete, logical, table blocks)


Library of basic input/output control blocks with Complex signals


Library of hierarchical state machine components to model discrete event and reactive systems


Library of electrical models (analog, digital, machines, multi-phase)


Library of magnetic models


Library of 1-dim. and 3-dim. mechanical components (multi-body, rotational, translational)


Library of 1-dim. thermo-fluid flow models using the Modelica.Media media description


Library of media property models


Library of thermal system components to model heat transfer and simple thermo-fluid pipe flow


Library of mathematical functions (e.g., sin, cos) and of functions operating on vectors and matrices


Library of complex mathematical functions (e.g., sin, cos) and of functions operating on complex vectors and matrices


Library of utility functions dedicated to scripting (operating on files, streams, strings, system)


Library of mathematical constants and constants of nature (e.g., pi, eps, R, sigma)


Library of icons


Library of type and unit definitions based on SI units according to ISO 31-1992


This information is part of the Modelica Standard Library maintained by the Modelica Association.

Package Modelica® is a standardized and free package that is developed together with the Modelica® language from the Modelica Association, see It is also called Modelica Standard Library. It provides model components in many domains that are based on standardized interface definitions. Some typical examples are shown in the next figure:

For an introduction, have especially a look at:

  • Overview provides an overview of the Modelica Standard Library inside the User's Guide.
  • Release Notes summarizes the changes of new versions of this package.
  • Contact lists the contributors of the Modelica Standard Library.
  • The Examples packages in the various libraries, demonstrate how to use the components of the corresponding sublibrary.

This version of the Modelica Standard Library consists of

  • 1288 component models and blocks,
  • 404 example models, and
  • 1227 functions

that are directly usable (= number of public, non-partial, non-internal and non-obsolete classes). It is fully compliant to Modelica Specification Version 3.2 Revision 2 and it has been tested with Modelica tools from different vendors.

Licensed by the Modelica Association under the 3-Clause BSD License
Copyright © 1998-2019, Modelica Association and contributors.

This Modelica package is free software and the use is completely at your own risk; it can be redistributed and/or modified under the terms of the 3-Clause BSD license. For license conditions (including the disclaimer of warranty) visit

Modelica® is a registered trademark of the Modelica Association.