# Simcenter Amesim

Simcenter Amesim is a commercial simulation software for the modeling and analysis of multi-domain systems. It is part of systems engineering domain and falls into the mechatronic engineering field.
The software package is a suite of tools used to model, analyze and predict the performance of mechatronics systems. Models are described using nonlinear time-dependent analytical equations that represent the system's hydraulic, pneumatic, thermal, electric or mechanical behavior. Compared to 3D CAE modeling this approach gives the capability to simulate the behavior of systems before detailed CAD geometry is available, hence it is used earlier in the system design cycle or V-Model.
To create a simulation model for a system, a set of libraries is used. These contain pre-defined components for different physical domains. The icons in the system have to be connected and for this purpose each icon has ports, which have several inputs and outputs. Causality is enforced by linking the inputs of one icon to the outputs of another icon (and vice versa).
Simcenter Amesim libraries are written in C language, Python and also support Modelica, which is a non-proprietary, object-oriented, equation based language to model complex physical systems containing, e.g., mechanical, electrical, electronic, hydraulic, thermal, control, electric power or process-oriented subcomponents. The software runs on Linux and on Windows platforms.
Simcenter Amesim is a part of the Siemens Digital Industries Software Simcenter portfolio. This combines 1D simulation, 3D CAE and physical testing with intelligent reporting and data analytics. This portfolio is intended for development of complex products that include smart systems, through implementing a Predictive Engineering Analytics approach.

## History

The Simcenter Amesim software was developed by Imagine S.A., a company which was acquired in June 2007 by LMS International, which itself was acquired in November 2012 by Siemens AG.
The Imagine S.A. company was created in 1987 by Dr Michel Lebrun from the University Claude Bernard in France, to control complex dynamic systems coupling hydraulic servo-actuators with finite-elements mechanical structures. The initial engineering project involved the deck elevation of the sinking Ekofisk North Sea petroleum platforms.
In the early 1990s the association with Pr C. W. Richards, coming from the University of Bath in England, led to the first commercial release of Simcenter Amesim in 1995 which was then dedicated to fluid control systems.
Simcenter Amesim is used by companies in the automotive, aerospace and other advanced manufacturing industries.

## Usage

Simcenter Amesim is a multi-domain software that supports modeling a variety of physics domains (hydraulic, pneumatic, mechanic, electrical, thermal, electromechanical). It is based on the Bond graph theory.
Under the Windows platform, Simcenter Amesim works with the free Gcc compiler, which is provided with the software. It also works with the Microsoft Visual C++ compiler and its free Express edition. Since the version 4.3.0 Simcenter Amesim uses the Intel compiler on all platforms.

## Platform facilities

Simcenter Amesim features:
* Platform Facilities
** graphical user interface, interactive help, supercomponents, post-processed variables, experiments management, meta-data, statechart designer
* Analysis Tools
** table editor, plots, dashboard, 3D animation, replay of results, linear analysis (eigenvalues, modal shapes, transfer functions, root locus), activity index, power and energy computation
* Optimization, Robustness, DOE
** Design Of Experiments, optimization, Monte-Carlo
* Solvers and Numerics
** LSODA, DASSL, DASKR, fixed-step solvers, discrete partitioning, parallel processing, Simcenter Amesim/Simcenter Amesim cosimulations
* Software Interfaces
** generic co-simulation (to be used to co-simulate with any software coupled to Simcenter Amesim), functional mock-up interface (export)
* MIL/SIL/HIL and Real-Time
** plant/control, various real-time targets
* Simulator Scripting
** scripting functions to pilot the simulations from Microsoft Excel, MATLAB, Scilab, Python, and support for C and Python development and reverse-engineering script generation from a model
* Customization
** own customized pre and post-processing tools with python, script caller assistant, editor of parameters group, app designer
* Modelica Platform
** support of the Modelica modeling language
* 1D/3D CAE
** CAD Import, CFD software co-simulation, FEA import of reduced modal basis with pre-defined frontier nodes, MBS software cosimulation and import/export
* Development
** Users can develop submodels from different standard submodels (supercomponent) using Component Customization functionality or by programming them in C or in Fortran with the Submodel Editor.

## Physical libraries

Physical libraries from which models can be built include control, electrical networks, mechanical, fluid, thermodynamic, IC engine, and aerospace and defense libraries.

## Education and research

Simcenter Amesim is used by engineering schools and universities. It is also the reference framework for various research projects in Europe.

## Release history

| Name/Version | Build Number | Date |
| AMESim | - | 1995 |
| AMESim 1.0 | v100 | 1996 |
| AMESim 1.5 | v150 | 1997 |
| AMESim 2.0 | v200 | 1998 |
| AMESim 2.5 | v250 | April 1999 |
| AMESim 3.0 | v300 | June 2000 |
| AMESim 3.5 | v350 | May 2001 |
| AMESim 4.0 | v400 | March 2002 |
| AMESim 4.1 | v410 | April 2003 |
| AMESim 4.2 | v420 | September 2004 |
| AMESim 4.3 | v430 | October 2005 |
| AMESim Rev 7A | v700 | April 2007 |
| AMESim Rev 7B | v710 | December 2007 |
| AMESim Rev 8A | v800 | June 2008 |
| AMESim Rev 8B | v810 | December 2008 |
| AMESim Rev 9 | v900 | November 2009 |
| AMESim Rev 10 | v1000 | November 2010 |
| AMESim Rev 11 | v1100 | November 2011 |
| AMESim Rev 12 | v1200 | March 2013 |
| AMESim Rev 13 | v1300 | December 2013 |
| LMS Imagine.Lab Amesim 14 | v1400 | February 2015 |
| LMS Imagine.Lab Amesim 15 | v1501 | July 2016 |
| Simcenter Amesim 16 | v1600 | January 2018 |
| Simcenter Amesim 17 | v17 | October 2018 |
| Simcenter Amesim 2019.1 | v2019.1 | April 2019 |
| Simcenter Amesim 2019.2 | v2019.2 | October 2019 |
| Simcenter Amesim 2020.1 | v2020.1 | April 2020 |
| Simcenter Amesim 2020.2 | v2020.2 | October 2020 |
| Simcenter Amesim 2021.1 | v2021.1 | April 2021 |
| Simcenter Amesim 2021.2 | v2021.2 | October 2021 |
| Simcenter Amesim 2022.1 | v2022.1 | April 2022 |
| Simcenter Amesim 2210 | v2210 | October 2022 |
| Simcenter Amesim 2304 | v2304 | April 2023 |
| Simcenter Amesim 2310 | v2310 | October 2023 |