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Ansys optiSLang
Process Integration & Design Optimization 

Orchestrate and automate your simulation toolchains and connect to state-of-the art optimization algorithms to perform parametric design studies and better understand your designs. 


Parametric Design Studies Made Easy

Ansys optiSLang is a constantly evolving, leading-edge answer to the challenges posed by CAE-based Robust Design Optimization (RDO). Its state-of-the-art algorithms efficiently and automatically search for the most robust design configuration, eliminating the slow, manual process that used to define RDO. With optiSLang as your process integration and design optimization solution, you’ll make the right decisions sooner.

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    Process Automation
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    Optimization & Uncertainty Quantification
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    Design of Experiments & Sensitivity Analysis
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    Ansys Minerva Integration

Quick Specs

Accelerate searches for the best and most robust design configuration by automating the search process with interactive visualization and AI technologies. State-of-the-art algorithms for design exploration, optimization, robustness and reliability analysis let you make better decisions with less effort using design optimization software.

  • Process Automation
  • Robust Design
  • Reduced-Order Modeling
  • Simulation Workflow Building
  • Design of Experiments
  • CAx Connectors
  • Optimization
  • Model Calibration
  • Ansys Minerva Integration

Multi-Body Simulation of Truck Mountings on Rough Road Conditions

Ansys optiSLang enables a simulation of loads based on fast and cost-effective measurable signals for an efficient assessment of changes to the drivetrain configuration without the repetition of expensive driving tests.


Multi-Body Simulation of Truck Mountings on Rough Road Conditions

Ansys optiSLang enables a simulation of loads based on fast and cost-effective measurable signals for an efficient assessment of changes to the drivetrain configuration without the repetition of expensive driving tests.

July 2023

What's New

The optiSLang 2023 R2 release adds new user interface capabilities, making integrating multidisciplinary workflows for typical use cases easier and providing more flexibility and openness for advanced scripting and customization purposes.

2023 R2 optiSLang
New Integration Nodes

2023 R2 includes enhanced multidisciplinary workflow building and new integration nodes for Ansys Fluent, Ansys SPEOS, and Ansys Rocky.


Unlock more complex customization possibilities for large project with improved optISLang python API, consistent with pyAnsys and available on GitHub.

Improved spreadsheet import

ML-based postprocessing supports importing data from spreadsheets directly and allows more efficient postprocessing and analysis based on streamlined data handling

Streamline and automate your RDO process with leading-edge AI and interactive visualization

Ansys optiSLang is a process integration and design optimization solution that automates key aspects of the robust design optimization process. optiSLang connects multiple CAx tools and different physics into a holistic, multi-disciplinary approach to optimization. Additionally, it enables simulations processes to be standardized and shared, giving new hires and simulation novices more direct access to simulation. With this powerful toolset, your entire team of engineers and designers can gain a better, more complete understanding of their design and make the right decisions sooner.



Key Features

optiSLang supports integration with a variety of CAx programs and offers powerful RDO tools to gain critical insights faster

Ansys optiSLang offers GUI-supported binary interfacing with major CAE tools used in virtual product development. Other tools can be connected via scripting, text-based interfaces or custom integrations. You get support for tools including CAD, CAE, scripting, desktop applications, repositories, databases and in-house solvers. With support for high-performance computing strategies, you can submit jobs using your queuing system or Ansys-provided submitting capabilities. Regardless of which environment you choose, optiSLang provides the same settings and dialogs.

Process automation and integration — as well as access to the best possible parametric simulation models — are the keys to successful CAE-based parametric studies. Our graphical user interface provides easy-to-understand charts and control panels that enable full access and traceability of the complete workflow. 

Simulation plays a big role in understanding products and processes, especially complex ones. Parameter-based variation analysis gives you insight into how your design behaves under variability. Multidisciplinary optimization tasks often require a huge number of variables, and it can be difficult to know where to focus. optiSLang’s algorithms and correlation analysis automatically identify the most salient variables, reducing the number of design variables you must worry about. The program’s sensitivity analysis also creates the basis to appropriately formulate the optimization task with respect to choice and number of objectives or possible constraints, helping you quickly zero in on the best approximation model.

Reduced Order Modeling — Ansys optiSLang builds metamodels for rapid feedback and robust design analysis in a fraction of the time it would take to run a simulation to predict a certain design.

Design optimization and parameter identification — Ansys optiSLang’s powerful algorithms and automated workflows build on earlier steps of sensitivity analysis to provide a wizard-driven decision tree to recommend the optimizer with default settings.


To allow cooperation in multiphysical simulation and multidisciplinary optimization, the automation and publishing of workflows for several repetitive tasks, as well as simulation data management become essential, like:

  • Transfer of results of one discipline as input into the next step of operation
  • Post-processing steps, reports and result extraction
  • Model generation tasks
  • Variants comparison for finding an optimal design
  • Subsequent optimization runs with adapted constraints and objectives

A powerful solution to overcome these challenges is the combination of Ansys optiSLang and Ansys Minerva.

Similar to sensitivity analysis, robustness analysis identifies the most important scattering variables and offers a decision tree to select the most appropriate algorithms to verify robustness and reliability for your product or situation. This is key for designs that must meet high safety or quality requirements with event probabilities of less than 1 out of 1,000. A reliability analysis can quantify the probability of exceeding a limit and prove it to be less than the accepted value. optiSLang’s powerful algorithms help ensure product quality, minimizing scrap, recall and the risk of legal action.


Ansys optiSLang License

The Ansys optiSLang premium and enterprise licensing categories allow you to choose what fits your needs best. The premium offering will enable users access to a broad simulation workflow automation and optimization capabilities. Any user requires an enterprise license to build apps, leverage AI for metamodeling, and conduct a much higher number of concurrent variations.

Product Packages

Design Studies   
Classic DOE   
Sampling & Sensitivity Analysis   
Robust Design Optimization   
Classic scalar meta-modeling   
Reliability Analysis   
Process Integration and Workflow Orchestration   
Embedded in Ansys   
Build and automate workflows   
Integrate 3rd party tools   
App generation   
Advanced Meta Modeling & AI/ML   
Field meta-modeling (signals, 2D/3D)   
UQ for Signals, 2D/3D   
AI/ML for RD0   
Concurrent Solver Variant Licensing   
Solver variations for parametric design study +3+7

Case Studies


Diversity of Variations in the Virtual Prototyping of Tennis Rackets

Robustness evaluation and optimization of HEAD tennis rackets with multiple input and objective parameters using optiSLang® and Ansys.



Safety Assessment of Automated Driver Assistance Systems

Statistical methods combined with Software-in-the-Loop (SiL) simulation help to analyze the reliability of Advanced Driver Assistance Systems (ADAS).


TMF Panel Optimization

Ariane Group GmbH developed a simulation procedure in order to reduce the effort on full scale hardware testing. optiSLang was used for parameter identification and optimization of Thermo-Mechanical Fatigue (TMF) panels representing in design and size one part of the combustion chamber of the Ariane 6 European launch vehicle. 


Validation of ADAS using Reliability Analysis Methods to Save a Factor of 1000 Simulations Per Scenario

Find out how Mercedes Benz uses Ansys technology to develop and test the reliability advanced driver assistance systems (ADAS). 


Window of Opportunity

Robust design optimization ensures high-quality window mechanisms over a wide range of applications.


Virtual Quality Assurance in the Digital Orthopaedic Workshop of the Future

The emerging field of virtual medical certification requires accurate and reliable FE-simulations in order to speed up the regulatory approval process of individualized prostheses and orthoses.


Analysis of Low Cycle Fatigue Considering Geometric Manufacturing Tolerances: Ansys + SIEMENS

SIEMENS AG applies Ansys, Statistics on Structures and Ansys optiSLang for probabilistic analyses of geometric variations and their influence on the fatigue behavior of a gas turbine housing.

White Papers & Articles


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Model Calibration of a Railway Vehicle

With the help of Ansys optiSlang, calibration of a numerical model of Alfa Pendular train, including the car body, bogies and passenger-seat system, was conducted based on the natural frequencies and modal configurations estimated from dynamic tests.

Ansys software is accessible

It's vital to Ansys that all users, including those with disabilities, can access our products. As such, we endeavor to follow accessibility requirements based on the US Access Board (Section 508), Web Content Accessibility Guidelines (WCAG), and the current format of the Voluntary Product Accessibility Template (VPAT).



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