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Altair Compose 2025 - 新機能紹介ウェビナー動画・資料
科学技術計算ツール Altair Compose 2025では、Dicom医療用画像通信ライブラリ・最適化ライブラリの拡充、エディタの機能強化やAI Studio用Extensionなど各種機能追加がございます。 資料のダウンロードはこちら。 主な新機能 ・機能改善 Dicom医療用画像通信ライブラリ 最適化関数の追加 経路（組み合わせ）・カーブフィッティング エディタの機能強化 AI Studio用Extension 解説動画 その他の改善についてはリリースノートをご参照ください。 Compose 2025 リリースノート 英語 Compose 2025 リリースノート 日本語 使用製品：Altair Compose, AI Studio
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Fluid Modeling with OptiStruct
Introduction In order to model fluid-structure interaction with OS one should consider the type of fluid he wants to study. One way is to look at the bulk modulus of the material that can be defined as: where ρ is the density and c is the speed of sound. Since compressibility is the inverse of the bulk modulus, fluids with…
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How to export plots to image?
I have this plot, how can I export this to an image? Thanks
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Automating PSIM with Hyperstudy vs Scripting
The primary goal of this article is to highlight the advantages of Altair HyperStudy over making scripts to process data produced by PSIM. This article does not delve into the implementation details of a script or a Hyperstudy file. If you are not familiar with these yet, please refer below for the Hyperstudy and here for…
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Yeoh_fitting
The Yeoh model currently only supports material parameter input. Thus, it is necessary to calculate the Yeoh material parameters outside of Radioss. For this example, a solidThinking Compose script is provided to calculate the Yeoh parameters in Radioss.
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Creating Datasets from Results Files for Altair romAI
Altair romAI is an AI-powered technology that creates reduced order models (ROMs) to accelerate complex simulations like DEM, CFD, etc. ROMs created with romAI capture the dynamic response of a system accurately and yield almost instant results. One of the most time-consuming steps when working with romAI is preparing your…
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E-book for System Dynamics and Controls Using Altair Compose
E-book for System Dynamics and Controls Using Altair Compose This e-book is aimed at readers who are approaching “System Dynamics and Control Theory” for the first time or have a basic knowledge of this subject. We will provide the reader all the required theoretical knowledge before moving to the practical examples shown.…
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Vectorplot of Abs Max Princ from Abaqus ODB outputfile
Dear all, is there a way to create a vectorplot from the Abs Max Princ Stressoutput from an ODB file of a ABAQUS simulation?
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PSD to Time Series OML Utility
Overview: This OML utility generates a time-domain realization of a signal from a PSD given as an input and writes it in a CSV file. It allows for visualization of both PSD and realization of the signal. The input PSD must be stored in a CSV file containing two columns, frequency [Hz] and magnitude. E.g.: 5,1.41E-02…
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Compose signal processing - PSD 2 Time-serie
Hi all, I am trying to transform a PSD into a time-history. I am using the method described in the E-book of signal processing under Compose but I am facing two errors in the script, namely I cannot display the time signal and the inverse calculation to recalculate the DSP with the time signal does not work with pwelch…
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Rainflow Counting Algorithm - Create Simple 3D Plot
Overview: This OML script shows how to create a 3D histogram from results from the rainflow OML command. These are the steps it takes: Create signal to analyze Evaluate rainflow counting algorithm Create 3D histogram from means & ranges Format histogram to show cycle count for means & ranges Prerequisite: Install Altair…
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Tcl command to obtain elements that are connected via any CONTACT or TIE group to a componenet
I would like to Isolate a component from an FEA model. To do so, I want to determine: All attached elements to a specific component (can be done via TCL) All elements that are connected via physical connectors (like CONTACT or TIE) The elements in (2) will be used to define the location of boundary conditions in the…
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Half Power Bandwidth Damping Calculator
Overview: Joint effort between Rafael Sánchez Garciarivas (Altair Engineering) and Shashikant Sharma (Hutchinson Antivibration Systems). This OML function can be used in Compose to calculate the half-power bandwidth damping of the peaks of the Frequency Response Function (FRF) of a system, i.e., it measures how far apart…
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Altair Compose eBooks
Several useful Compose eBooks that dive deeply into different aspects of modeling with Altair Compose have been published. I'm creating this discussion for anyone interested to have access to them from a single source. These Compose eBooks are: A Guide to Learn Math, Scripting, Data Analysis and Visualization with Altair…
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Mechatronics : LatchMechanism DigitalTwin demonstrator
Overview: The LatchMechanism model can be used to demonstrate live some of the most valuable milestones in the implementation of a DigitalTwin: Multi-physics system simulation Multi-discipline systems integration Parametric sensitivity DoE & fit Reduced order modeling Interacting with physical world Download attached…
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Aerospace : LandingGear multi-discipline model, actuation and drop test simulation
Overview: The LandingGear model can be used to demonstrate: OptiStruct flexible bodies in MotionSolve Flexible translational joint in MotionSolve Linear analysis, FRFs and CPSDs in MotionSolve Hydraulics actuation in TwinActivate MotionSolve cosimulation in TwinActivate TwinActivate hydraulics actuation in MotionSolve Tire…
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New MD DigitalTwin Driver feature
Overview: The new MD DigitalTwin Driver feature is part of the new "MD_Tools for Compose" extension. MD DigitalTwin Driver intends to enable NEW users (targeting project managers, system and test engineers) to leverage EXISTING advanced multi-discipline models for parametric simulation and related results investigation…
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New MotionSolve interactive plots feature
Overview: The new MotionSolve interactive plots feature is part of the new "MD_Tools for Compose" extension. MotionSolve interactive plots feature enables to easily compare multiple MotionSolve results in either the time or frequency domain (leveraging either FRFs, FFTs, or CPSDs). Pre-Requisite: MD_Tools for Compose and…
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New MD_Tools extension for Compose, TwinActivate and HyperWorks v2024.x
Overview: The new MD_Tools extension is available for Compose, TwinActivate and HyperWorks (both MotionView and HyperMesh clients) v2024.x. MD_Tools extension enables many useful features in the scope of Multi-Discipline System Integration (combined use of CFD, FEA, MBD, 1D-System, CEM modeling and simulation) for the…
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Compose – PSIM Integration Starter’s Guide 2: PsimASimulate
Altair PSIM is a simulation and design software for power electronics, motor drives, and power conversion systems. Altair Compose is an environment for doing math calculations, handling data, automating workflows and much more. A new, powerful, library has been released on Compose from v2022.3 onwards, the PSIM Integration…
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機構解析と構造解析の連成シミュレーションの例題（構造：Explicit対応）
下記で、MotionSolveとOptiStructの非線形過渡応答解析を連成させた例題を公開しました。 従来バージョンでは、OptiStruct/Implicitとの連成のみサポートされていましたが、Altair Simulation 2024より、OptiStruct/Explicitとの連成がサポートされ、非線形性が高く収束性の困難な問題に対し、計算が安定・高速化されます。 車両と燃料タンクの例題をOptiStruct/Explicit用に更新しました。 PDFの設定手順書とモデルデータをダウンロードしてご利用ください。 Altair Simulation 2024以上が必要です。 使用ソフト： マルチボディシステムシミュレーション|…
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Animate Simulation Results in Batch Using Compose and HyperView
Altair Compose is a tool that can enhance our usage of other simulation tools. In this small post I will show you how you can use it to run multibody systems simulations using MotionSolve and animate your results in HyperView, all with a single click. This example is based on the Python script shown in Drive MotionSolve…
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How to install HFEM Toolbox for Altair Compose
The High Frequency Electromagnetics (HFEM) Toolbox is a library dedicated for post-processing Altair Feko data, for example, far field, near field and impedance data in Altair Compose. Field calculators are available which allow ease of access to the data of derived electromagnetic quantities, for example, left and…
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Integration of Altair Compose in AI Studio - Use Cases
Overview Altair's AI Studio is a comprehensive Data Analytics and AI Platform that empowers organizations to make powerful insights accessible to their entire team. Altair AI Studio (formerly AI Studio) allows users to design and prototype highly explainable AI and machine learning models. Altair Compose, on the other…
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Drive MotionSolve Simulations with Python and Altair Compose
Altair Compose is a tool that can enhance our usage of other simulation tools. In this small post I will show you how you can use it to run many multibody systems simulations in batch using MotionSolve, Altair’s multibody dynamics solver. Concretely, this example shows how to take an input model (MDL file) and change an…