Modelica Standard Library

Models built using the Modelica Standard Library

Overview

The Modelica Standard Library is a free library developed by the Modelica Association and supplied with Dymola. It includes the fundamental components for modelling mechanical (1D/3D), electrical (analog, digital, machines), thermal, fluid (1D), control systems and hierarchical state machines. It also includes numerical functions and functions for handling strings and files.

Key Features
Resources
  • Library Components Description
    Analog

    Analog electric and electronic components, such as resistor, capacitor, transformers, diodes, transistors, transmission lines, switches, sources, sensors.

    Digital

    Digital electrical components based on the VHDL standard, like basic logic blocks with 9-value logic, delays, gates, sources, converters between 2-, 3-, 4-, and 9-valued logic.

    Machines

    Electrical asynchronous-, synchronous-, and DC-machines (motors and generators) as well as 3-phase transformers.

    FluxTubes

    Based on magnetic flux tubes concepts. Especially to model electro-magnetic actuators. Nonlinear shape, force, leackage, and material models. Material data for steel, electric sheet, pure iron, Cobalt iron, Nickel iron, NdFeB, Sm2Co17, and more.

    Translational

    1D mechanical, translational systems, e.g., sliding mass, mass with stops, spring, damper.

    Rotational

    1D mechanical, rotational systems, e.g., inertias, gears, planetary gears, convenient definition of speed/torque dependent friction (clutches, brakes, bearings, ..)

    MultiBody

    3D mechanical systems consisting of joints, bodies, force and sensor elements. Joints can be driven by drive trains defined by 1D mechanical system library (Rotational). Every component has a default animation. Components can be arbitrarily connected together.

    Fluid

    1D thermo-fluid flow in networks of vessels, pipes, fluid machines, valves and fittings. All media from the Modelica.Media library can be used (so incompressible or compressible, single or multiple substance, one or two phase medium).

    Media

    Large media library providing models and functions to compute media properties, such as h = h(p,T), d = d(p,T), for the following media:

    • 1240 gases and mixtures between these gases.
    • incompressible, table based liquids (h = h(T), etc.).
    • compressible liquids
    • dry and moist air
    • high precision model for water (IF97).
    FluidHeatFlow, HeatTransfer

    Simple thermo-fluid pipe flow, especially to model cooling of machines with air or water (pipes, pumps, valves, ambient, sensors, sources) and lumped heat transfer with heat capacitors, thermal conductors, convection, body radiation, sources and sensors.

    Blocks

    Input/output blocks to model block diagrams and logical networks, e.g., integerator, PI, PID, transfer function, linear state space system, sampler, unit delay, discrete transfer function, and/or blocks, timer, hysteresis, nonlinear and routing blocks, sources, tables.

    StateGraph

    Hierarchical state machines with a similar modeling power as Statecharts. Modelica is used as synchronous action language, i.e., deterministic behaviour is guaranteed

     A = [1,2,3;
       3,4,5;
       2,1,4];
     b = {10,22,12};
     x = Matrices.solve(A,b);
     Matrices.eigenValues(A);
    Math, Utilities

    Functions operating on vectors and matrices, such as for solving linear systems, eigen and singular values etc., and functions operating on strings, streams, files, e.g., to copy and remove a file or sort a vector of strings.

  • Downloads

    Learn more

Discover Dymola