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ANSYS 18 - Simulation Everywhere

Many industries face a fundamental technological change. Digitization, which has already changed many business models in the consumer field, now also penetrates industrial products and processes. Networking through the Internet of Things brings new comrades on the scene and intensifies the competitive pressure. At the same time, networked products create new opportunities to get to know customers, their application scenarios and the actual requirements more effectively, thus tailoring products and services to the real needs. The simulation plays a central role - be it in design, design and verification, where it already opens up potential for optimization during the development or whether it is using an individual product,

These many new scenarios mean that the use of simulation technology is increasingly supported by users who are not simulation experts, but rather use the advantages of physical simulation as design engineers, development engineers or service engineers. On the other hand, there is a growing need to describe the ever-increasing complexity of products in an adequate manner so that experts can implement the methods that ensure the required reality of the simulation. Thus, simulation takes place everywhere and through: Pervasive Engineering Simulation.

This development is favored by a continuous simulation solution, which combines all the components - physical and logical - but also all work steps in an efficient work process. ANSYS, Inc. is responsible for the development of ANSYS R18.

ANSYS 18 Update on

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Update Information about ANSYS 18.1

Topology Optimization

  • Native work process in ANSYS Workbench
  • Consistent data flow from the installation space through the geometry extraction to the validation of the optimized design
  • Volume structures in analyzes of linear statics and modal analysis
  • Consideration of production restrictions such as structural sizes, direction and symmetries (18.1)
  • Use of different load scenarios in combination (Static Structural and Modal Analysis) (18.1)
  • Several exclusion regions (18.2)
  • Improved performance through optimized data access
  • Monitors of the component shape during optimization



Independent 3D Results for all Project Partners

  • Improved communication on simulation results
  • Export of 3D representations in the ANSYS Viewer File Format 
  • Evaluate different model states in parallel (18.1)
  • Free Viewer


Efficient Handling

  • Advanced filters and sorting in the tree
  • Presentation mode with Hotkey F11 (maximizing the graphics area) (18.1)
  • Frame-by-frame animation, adaptation of the legend during animation for each step (18.1)
  • Access to components via APDL from the results file (* .rst) possible (18.1)
  • Automated filtering of Named Selection during input in selection windows (18.1)
  • Direct selection of nodes and elements
  • Graphical selection according to criteria

Efficient Modeling

  • Extended import of external networks for modular modeling
  • Advanced geometry modeling in the Mechanical Editor
  • Freestanding nodes independent of existing structures
  • Extended reuse of existing FEM component models
  • Quality-based networking
  • Advanced diagnosis of element quality
  • Network-independent reinforcement of materials
  • LS-DYNA tools available in Mechanical as ACT extension (no separate download and installation required) (18.1)
  • Wizard for explicit case analysis (18.1)

Analyze beam models efficiently (18.1)

  • Automated bar-to-bar contact in ANSYS Mechanical (18.1)
  • Simplified beam handling by cross-section manager, grouping / search options (18.1)

Efficient Solution

  • Accelerated contact detection and reduced memory requirements for MPC contacts
  • Enhanced Nonlinear Adaptive Networking (NLAD) 

    • DMP support 
    • Improved convergence 
    • Thermomechanical applications, B. Hot forming

  • Expanded mapping: 2D to 3D or import, Eg for consideration of production processes such as 3D printing
  • HPC through simultaneous solution of several frequency bands (Frequency Domain Decomposition)
  • Kobination of Frequenzcy Domain Decomposition and Mesh Domain Decomposition (18.1)
  • Improved GPU usage (approx. Factor 2) (18.1)
  • (18.2) 

    • Suitable for small sliding movements (18.2) 
    • Better scaling in parallelized analyzes (18.2) 
    • Higher robustness (18.2)

Importierte Dichteverteilung

Frequency Domain Decomposition

Advanced Material Models

  • Thermo-mechanical fatigue (TMF), for example, automotive components in the engine compartment, solder joints in microelectronics
  • Regularly distributed material properties as a function of time, space, displacement, thermal expansion, density, pore pressure, for example, in the event of a cyclical load for TMF for process simulation
  • Menetrey Wiliam model for predicting the damage behavior of concrete

Damaged area in a foundation


  • Life expectancy for vibration with ANSYS Fatigue 

    • Harmonic analysis 
    • Random vibration analysis

  • New workflow for flutter analysis of turbomachinery (Aeroelastic coupling for harmonic analysis)
  • Flow influence on the sound propagation
  • Enhanced functionality in multi-body simulation 

    • Improved time step algorithm o Friction-affected joints
    • Attenuation in flexible bodies
    • Track curves
    • Geometry configuration based on RBD result
    • Efficient expansion through reuse of the eigenforms
    • Simple definition of load variation by means of command object (18.1)

  • Subspace & Supernode Mode Extraction Method for Reducing CMS Superelements Available (18.1)
  • Structure damping at contact points can be defined separately for vertical and horizontal movement (harmonic analyzes, modal-based analyzes) (18.1)
  • ACT extension for case tests (18.2) 

    • Automated procedure wizard (18.2)


Multi-body simulation with complex contacts

Acoustics native in Workbench (18.2)

  • Sound generation (18.2)
  • Radiation and propagation (18.2)
  • Absorprtion, Reflection and Refraction (18.2)

New Acoustics Analysis Systems (18.2)


Reliable Electronic Systems

  • Import and processing ECAD data

    • Simple import of PCB models including trace mapping since version 17
    • Illustration of hollow vias
    • Imaging of Vias with Variable Dimensions

  • Linear Perturbation for Multiphysics and Transducer Elements (22X, 126)

    • Non-linear static analyzes for preloading the system
    • Linearization by operating point for subsequent modal analysis

  • Transmission of electrothermal loads from electromagnetic analyzes of PCBs in SIWave




Transformation of CFD Products

  • Classified CFD product portfolio with ANSYS AIM Pro, ANSYS CFD Premium, ANSYS CFD Enterprise
  • Less modules - more functionality
  • Broadened application spectrum through additional solvers
  • SpaceClaim Direct Modeler for easy and intuitive geometry preparation
  • DesignXplorer for parametric design studies and optimization in CFD Enterprise and CFD Premium
  • ANSYS AIM Pro included in ANSYS CFD Enterprise: Easy entry into second physics domain
  • EnSight (visualization of extensive CFD results) is part of the ANSYS product portfolio (18.2)
  • CFD Enterprise is part of the ANSYS Multiphysics Bundles (18.2)


Efficient Handling

  • Filter and group in dialog boxes and tree structure
  • Structuring of graphical representations on the basis of scenes 

    • Working with graphical objects 
    • Simple compilation of several graphic objects 
    • Transparency

  • Area selection and access to the Context menu directly on the CAD object (18.1)
  • Automated mesh interface definitions (18.1)
  • Improved live monitoring of the analysis 

    • Support of steady-state, rotating frames and batch-mode analysis

Graphical representation based on scenes

Live monitoring of results during analysis


OverSet Mesh

  • Overlapping network structures of high quality network blocks
  • High network quality with reduced network complexity
  • Applications with compressible flows and high machinings
  • Support for 2D rotation symmetrical models (18.1)


  • New options for geometry creation for milled rotor blades in BladeModeler, Eg turbochargers and industrial compressors
  • Import of CAD geometry into TurboGrid
  • Computational time optimization by combining small CAD patches in the solution (especially with Workbench meshing) and thus up to 60% more efficient solution (18.1)
  • Computational Time Reduction by Reuse of Deformation Calculations during Periodic Network Deformation (18.1)
  • New workflow for flutter analyzes 

    • Excitation and damping by fluid-structure interaction 
    • Transfer of velocity-dependent attenuation of CFD analyzes to the harmonic structure mechanics (aeroelastic coupling) 
    • Speed ​​advantage factor 10-100 against transient calculations

  • Improved postprocessing with cyclic and polar diagrams 

    • Intuitive comparison of different periods

  • Improved data handling: reuse & backup of existing results (18.2)


Modeling milled rotor blades

New Workflow for Flatter Analysis of Turbomachines


Improved postprocessing with cyclic and polar diagrams



  • Monte-Carlo radiation model for polyhedral networks (18.1)
  • Significantly reduced storage requirements and faster solution for Monte-Carlo radiation model by mesh coarsening (18.1)
  • Euler / Mixture multi-phase models: definition of different mass transfer models and options in a simulation (18.1)
  • Thermal fluid-structure interaction: exchange of thermal data via system coupling to FSI Interfaces (Mapped and Coupled) (18.1)
  • New cavitation models for analysis with several fluids and noncondensing gases (18.2)
  • Adjoint Solver ("Shape Optimization") for rotating reference systems (18.2)
  • Acceleration in the calculation of free surfaces and combustion by polyhedral-based unstructured mesh matching (18.2)
  • Accelerated FSI for fans by selective coupling of transient CFD and static FEM (18.2)

Electronics Desktop

  • MCAD import via SpaceClaimDirectModeler licensing (successor for ALinks for MCAD) (18.1)
  • Hierarchical structure for imported CAD data
  • Diagram settings can be stored as individual defaults
  • Improved HPC support 

    • Individual resource allocation for individual calculation steps 
    • RSM integration 
    • Distributed equations solution based on MPI 
    • Parameters and frequency steps can be distributed parallel (18.1)

  • Sensitivity studies, response areas and optimization through DesignXplorer integration


ANSYS Maxwell

  • Extended applications of Time Domain Decomposition 

    • Eddy currents, external circuits, demagnetization, coupled physics (18.1) and more

  • Magnetostriction - deformation of magnetic materials by magnetic fields 

    • Vibration and noise emission of magnetic circuits in alternating fields such as transformers, electric motors, actuators, sensors

  • Transfer of element-based force densities to harmonious structural-mechanical analyzes from harmonic electromagnetic analysis (18.1)
  • Transient two-way coupling between Maxwell and Icepak for electrothermal tasks (18.1)
  • New element technology 

    • First order nodes and edges 
    • Fast pre-analysis, 3D transient

  • Accelerated transient analysis by automatic detection of steady state (18.2)
  • Improved mapping of heat conduction in RMxprt-generated Icepak models (18.2) Resisitve Sheets (18.2)
  • Checkable belt angle for identical net with moving coupling surfaces (18.2)

Advanced options for the Maxwell Time Domain Decomposition technology


  • Integrated work process for antenna placement and detection of interference o Shooting and bouncing ray technology (SBR +) in HFSS 

    • NxN Coupling several antennas 
    • Continuous workflow

  • Adaptive networking for broadband applications 

    • Use of multiple frequencies in parallel for automatic network refinement 
    • Defined network accuracy for an entire frequency band 
    • Simultaneous equations of several frequencies possible

  • Fast model running on the basis of 3D layout data
  • Transient two-way coupling between HFSS and Icepak for electrothermal tasks (18.1)
  • Automated cleanup of ECAD data (18.1)
  • Efficient Analyzes of Antennas (18.1) 

    • 6 Additional Antenna Designs in the Antenna Toolkit (18.1) 
    • Characteristic Mode Analysis (18.1)

  • Acceleration of networking and solution (18.2) 

    • Phi mesher for MCAD model: Up to factor 8 faster (18.2) 
    • New DMP FEM direct matrix solver: Up to 30% faster (18.2) 
    • Improved integral equation solver: Up to 3x faster at very large models (18.2)

  • Automatic determination of the appropriate setup of simultaneously calculated parallelized frequency ranges on the basis of the total number of available cores (18.2)
  • Visual representation of raytracing (VRT) (18.2)
  • Higher accuracy through broadband RLC models (18.2)

Radar radiation when applied in a motor vehicle grille


  • Extended possibilities of electromagnetic verification

    • Multiphase VRM (voltage regulator module) for load balaning in PCBs or packages
    • RLC extraction for PCBs and parackages
    • EMC analysis of printed circuit boards under incident radiation (immunity)

  • Automated work process for thermal management analysis

    • Automated model construction for heat conduction and airflow
    • Parameterized heat sink geometries for fast design finding
    • Import of 3D layout and Thermal Material data by IDF

Thermal analysis based on ECAD data

ANSYS Simplorer

  • Use of reduced models (reduced or models, ROMs) from all domains

    • So far: ROMs for mechanics, magnetic field, flow and optional Model Reduction inside ANSYS
    • New: Thermal ROMs with ANSYS Mechanical Enterprise

  • Advanced Modelica support

    • Editor to create models
    • Complete mapping of the Modelica standard library MSL (> 1500 components)
    • Support for Modelon libraries for

      • Engine dynamics
      • Fuell cell
      • Heat exchanger
      • Hydraulics
      • Hydro power
      • Liquid cooling
      • Pneumatics
      • Thermal power
      • Vapor cycle
      • Vehicle dynamics

  • Simplorer models reduce and export by System Model Identification for MIMO Systems (Multiple Input Multiple Output) (18.1)
  • Co simulation via FMI

    • Coupling with slave FMU's external simulation tools, eg

      • GT-Suite
      • Amesim
      • Carsim
      • among others

  • Updated Battery Design Toolkit ( (18.2)

Use of reduced models from the 3D FEM / CFD for system simulation

Full support of the Modelical Standard Library MSL

Optional modelica-based model libraries from Modelon AB


  • Model-based development of systems and embedded software

    • Continuous use of models - from architecture to component design

      • For embedded software
      • New in R18: For the physical system
      • New in R18: Automatic synchronization of software and physical system requirements

Continuous use of models for embedded software and physical system

New applications

  • Harmonic magnetic field analyzes including frequency-dependent materials, eddy currents, current displacement
  • Transfer of losses from harmonic magnetic field analysis to stationary or non-stationary temperature field analysis
  • Temperature-dependent material properties for electromagnetic analyzes based on stationary temperature field distributions (18.1)
  • Result-dependent expressions, Eg for the modeling of fan characteristics
  • Polymer extrusion with temperature influence and viscoelastic material behavior
  • Plastic material behavior in structural mechanics analyzes (Bilinear isotropic solidification) (18.1)
  • Imaging of porous materials for flow-mechanical tasks for the idealization of filters, perforated plates, etc. (18.1)
  • Transient flow simulation (18.2)
  • Discrete particles in flows (18.2)
  • Co-extrusion of several materials (18.2)
  • Topology optimization (18.2)

Inductive heating of tools

Fan characteristic as result-dependent expression

Polymer extrusion with temperature influence

Efficient work processes

  • Transfer of AIM models for further detailed analyzes 

    • Per workbench project page 
    • Per AIM Template 
    • To ANSYS Fluent 
    • To ANSYS Mechanical

  • Thermal Interface Model for mapping TIM's (18.2)
  • Remote Forces & Displayings with configurable wording (18.2)
  • Improved current boundary conditions and solving control for magnetic field analyzes (18.2)
  • Support for 3D input devices (for example, SpaceNavigator) (18.2)
  • Locally varying inputs 

    • Press 
    • Force 
    • Velocity

  • Multiple screws with a common boundary condition
  • Display multiple results
  • Evaluate network quality and residuals (18.1)
  • Tools for processing STL data (18.1)
  • New Interactive Home (18.1)
  • Simplified user management by means of user-specific workflows (18.1)

Model transfer from AIM to Fluent

Spatially distributed velocity as a boundary condition

Select and display multiple results


  • DesignXplorer is available for sensitivity studies and optimization in many core products
  • Built-in HPC option with 4 cores in ANSYS CFD Premium and ANSYS CFD Enterprise
  • Use of up to 10 cores or a GPU (NVidia, Xeon Phi) with an HPC Pack; Combine with other HPC packs for 32, 128,512 or 2048 cores for a job
  • Multiplication of Solvertasks with up to 5 HPC Parametric Packs for 4, 8, 16 32 or 64 Simultaneously computable designs
  • Monitoring license usage with the ANSYS license manager

Use of HPC Packs and HPC Parametric Packs for parallel and simultaneous analysis

Monitoring of license utilization over time and peak demand

SpaceClaim Direct Modeler

  • Lattice geometries

    • Time-saving production of 3D printed components
    • Grid with regular patterning

  • Scripting

    • Record, edit, and re-use work steps
    • Use of intelligent variables for robust selections
    • Extended function cover

      • Blending / Lofting
      • Power selection
      • Clipboard operations
      • Imprint
      • Split

    • Integration of parameters for geometric variant studies

  • Icepak Level 3 Simplification
  • Working with small units

    • Nanomenter
    • Micrometer
    • Mils

Lattice structures for internal structure of volume bodies

Advanced scripting in ANSYS SpaceClaim Direct Modeler

ANSYS optiSLang

Available for ANSYS 18.2 from 25.9.2017

  • Automated data transfer between optiSLang blocks in Workbench
  • Combination of several DoE's
  • Individualized postprocessing
  • Data analysis directly in Microsoft Excel
  • Integration of additional external CAE tools: Comsol, VirtualLab Fusion, GTSuite, CAESES
  • Export of maps as metamodel for system simulations in Simplorer or Matlab (FMU / FMI)

optiSLang metamodel as a characteristic field in system simulation, source: R. Hoffmann

Instructions for Installation

The software can be downloaded as usual via the ANSYS Customer Portal:

For new customers, a user login is required before downloading. For this registration, the current customer number is required.

To download the ANSYS software, we recommend downloading the ISO images. With this download option you get all the data and do not have to assemble individual modules to an installation archive. The burning of a DVD is not necessary, since the loaded ISO images are also extractable with appropriate tools such as 7-Zip (please use latest version!) Or WinRAR. Please do NOT use Windows's own Zip Utility or WinZip, as they can not unpack the images flawlessly. The individual ISO images must always be unpacked into their own folders in order to avoid overwriting files of the same name.

For the electromagnetic products such as ANSYS Maxwell, ANSYS Simplorer, ANSYS Slwave and others there is a separate ZIP installation package (electronics) on the ANSYS Customer Portal.

Further notes on the current ANSYS Release 18.0 are available in the download menu under the item "Getting Started". These notes contain information on the following topics:

Highlights of Release, Platform Support Documents, Important Notices, Downloads & Prerequisites, Installation,

ANSYS 18.0 supports only 64-bit operating systems. This applies to the licensing as well as to the client / server installation of the ANSYS software. For more information about platform support, visit the following link:

The ANSYS Inc. release notes contain the following important messages:

Compatibility with Previous Releases

Backwards Compatibility: ANSYS 18.0 is available to read and resume databases from the previous versions: 17.0, 17.1, and 17.2. Likewise, ANSYS 17.2 is available to read and resume databases from the previous releases: 16.0, 16.1, 16.2, 17.0 and 17.1. To read a 16.x database in 18.0, first resume it in 17.2 and then resume that database in 18.0.

Upward / Forward Compatibility: No previous release has the ability to read and resume a database from a more recent release.


In addition to the incompatibilities noted within the release notes, known non-operational behavior, errors and/or limitations at the time of release are documented in the Known Issues and Limitations document, although not accessible via the ANSYS Help Viewer. See the ANSYS Customer Portal for information about the ANSYS service packs and any additional items not included in the Known Issues and Limitations document. First-time users of the customer portal must register to create a password.

Instructions for licensing

When upgrading to version 18.0, all existing license server systems must be upgraded to the new release. Please note that only 64bit operating systems are supported. The list of officially supported license server operating systems includes:

  • Windows7 (Professional & Enterprise)
  • Windows 8.1 Update 1 (Professional & Enterprise)
  • Windows 10 (Professional & Enterprise & Education)
  • Windows HPC Server 2008 R2 / Windows Server 2012 R2
  • RedHat Enterprise Linux (64- 6.7 / 6.8
  • SUSE Linux Enterprise 11 SP3 / SP4 / SUSE Linux Enterprise 12 SP0 / SP1
  • CentOS-7

Further information:

Please also check whether your license key is suitable for this usage before this license update. The release date of the new version 18.0 must be before the maintenance expiration date of the corresponding license increment. After version 18.0 supports only one TRL licensing (temper-resistant licensing), the license key must have a required "SIGN2 key" (see example) in every increment.

Release date:

ANSYS Mechanical APDL 18.0

Release 18.0 UP20161219


ANSYS Workbench 18.0

Software build date: Friday, 2 December 2016 21:23:16



Build 18.0 2016-12-05T23: 43: 59.965000


Example of a suitable license key:

INCREMENT struct ansyslmd 2017.0330 permanent 4 12345ABCDEFG \

    VENDOR_STRING = customer: 00123456 SUPERSEDE ISSUER = SIEBEL \

    ISSUED = 05-nov-2014 START = 05-nov-2014 SIGN2 = "0000 1111 2222 \

    3333 4444 5555 6666 7777 8888 9999 1111 2222 3333 4444 5555 "


Example of an unsuitable license key (-> license update before the update is absolutely necessary!):

INCREMENT struct ansyslmd 2016.0930 permanent 4 12345ABCDEFG \

    VENDOR_STRING = customer: 00123456 SUPERSEDE ISSUER = SIEBEL \

    ISSUED = 05-nov-2014 START = 05-nov-2014 SIGN2 = "0000 1111 2222 \

    3333 4444 5555 6666 7777 8888 9999 1111 2222 3333 4444 5555 "

The ASC (ANSYS Support Coordinator) will automatically receive an up-to-date license file with the order of an extended service period of the service (if necessary, please contact our contract department: To ensure availability of the current licenses and compatibility with newer versions of ANSYS.

If you want to change the license server, you can register the new license in the ANSYS Customer Portal under "License Management" -> "License Server Change "Please note that the Online Server Change can only be performed by the ANSYS Support Coordinator (ASC) The update to version 18.0 is accompanied by the following file updates:


ANSYS 18.0


lmgrd: FLEXlm version

ansyslm: FLEXlm version build 173302 x64_n6

lmutil: FLEXlm version build 173302 (ipv6) x64_n6

ansysli_server: ANSYS Licensing Interconnect version 1.8.0 (20161202) for winx64. Updated at ANSYS Build 18.0.

ansysli_client: ANSYS Licensing Interconnect version 1.8.0 (20161202) for winx64. Updated at ANSYS Build 18.0.

ansysli_monitor: ANSYS Licensing Interconnect version 1.8.0 (20161202) for winx64. Updated at ANSYS Build 18.0.

ansysli_util: ANSYS Licensing Interconnect version 1.8.0 (20161202) for winx64. Updated at ANSYS Build 18.0.

All information has been prepared to the best of our knowledge. Information provided without guarantee.

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