NACS 2.7 is available

We are happy to announce the availability of NACS 2.7.

NACS 2.7 is a feature release that mainly enhances the functionality of NACS and partly removes some bugs.

Furthermore NACS 2.7 is last version of NACS that will be made available for our customers.

Bugs were mainly removed from the graphical user interface but also from the NACS core itself.
In NACS GUI dialogs that allow to define model order reduction methods have been enhanced.

Future of NACS

The final NACS Release

From 2008 until today NACS has been developed, distributed and marketed by SIMetris. Due to the liquidation of SIMetris, which will be completed in 2020, NACS 2.7 is the last official version of our finite element software NACS that will be released.

Future of NACS

The end of SIMetris business does also mean that the end of NACS has arrived. However we are currently working together with some partners to finish an Open Source finite element tool, that we are planing to release using the MIT license.

As of today the estimated release date of the new software tool will be around mid 2020. We will release more details on our website as soon as the release schedule is finalized.
The finite element tool will consist of

  • a core application that carries out the finite element simulations and
  • a graphical user interface similar to the NACS GUI.

Beyond the release of an open source finite element tool, commercial support will be provided by a new company. More details concerning this topic will also be released within the next months.

Feature Highlights

NACS Core Features

Model Order Reduction: Modal Superposition
NACS 2.7 arrives with support for model order reduction methods. One of these reduction methods is Modal Superposition. The following analysis types can benefit from this method:
  • transient analysis
  • harmonic analysis
The Modal Superposition model order reduction can currently be applied to and accelerates the computation of the following physics:
  • Mechanics
  • Piezoelectricity
In order to be able to use this feature, which is currently available as beta feature,a new license is required. We offer this new license type as test license to existing and new users. Just contact us at This email address is being protected from spambots. You need JavaScript enabled to view it. .
Model Order Reduction: Krylov Reduction
NACS 2.7 arrives with support for model order reduction methods. One of these reduction methods is Krylov Subspace Reduction. The following analysis types can benefit from this method:
  • transient analysis
  • harmonic analysis
The Krylov model order reduction can currently be applied to and accelerates the computation of the following physics:
  • Mechanics
  • Magnetics
  • Magneto-mechanics

Coupled magnetomechanical simulations can only be carried out using a weak coupling.

In order to be able to use this feature, which is currently available as beta feature,a new license is required. We offer this new license type as test license to existing and new users. Just contact us at This email address is being protected from spambots. You need JavaScript enabled to view it. .

FMI/FMU-Support - Functional Mockup Interface

NACS 2.7 has the capability to export Functional Mockup Units (FMU) of transient simulation models that are using a Model Order Reduction feature.

These FMUs can be used in system simulation tools like (Open)Modelica, Simulink, or others and allow to include complex simulation models however reduced to a reasonable size that allows efficient system simulations.

werden und somit ein komplexes Finite-Elemente-Modell repräsentieren.
Materialmodel: Linear Viskoelasticity
A new material model for linear viscoelasticity is now available for transient and harmonic analysis. Viscoelastic material properties are given by Prony series for bulk modulus and shear modulus. A Prony series can be computed via curve fitting from time- or frequency-dependent measurements.
New Results
The magnetic physic now provides the magnetic polar force density as a result. This can also be used as a coupling quantity in magneto-mechanical simulations.

Download

The current NACS Version be downloaded from our website by all registered users.

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