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Community March 2026 Roundup 📣
It's time for our March roundup! We've been busy behind the scenes and we're thrilled to share some significant updates. Get ready! 📣 Major Updates Altair's Support infrastructure migrated to the Siemens Support Center: As of Monday, March 9th, the Altair Support Portal has been shut down and your cases have been migrated…
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Altair Support is Moving to Siemens Support Center!
STATUS UPDATE (March 9 2026): Dear Community, Your support cases have been migrated to the Siemens Support Center. As of Monday, March 9th, the Altair Support Portal has been shut down. You should have received an email with the links and instructions on how to activate your account and log into the Siemens Support Center.…
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Altair Community Rewards and Recognization
The Altair Community is a space where beginners, experienced users, industry experts, students, faculty and our product specialists come together to share insights, collaborate, and find ways to take full advantage of our products. Engagement is at the heart of the Community and with the launch of our new and improved…
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Symmetry plane
Hello, I’m encountering an issue while trying to create the symmetry of my half fuselage. The model was built using a reference coordinate system. I then define a symmetry plane by selecting points on the open face of the fuselage. However, when I mirror the fuselage, the two surfaces do not merge properly and there is a…
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Symetric planes
Hello, When meshing a half model (fuselage + wing) using a symmetry plane, is it necessary to project a CCS curve onto the symmetry plane ? Thanks !
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OpenVSP and FlightStream
Hello, What are the main use cases and advantages of using OpenVSP before setting up a simulation in FlightStream ?
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External Software to mesh
Hello, If a part of my geometry is meshed using external software, what key aspects should be carefully considered ? Thanks !
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Meshing complex bluff bodies
Hello, What is the recommended approach for meshing complex non-lifting geometries such as a rotor hub? Is the TFI mesher appropriate for this type of geometry? Or an external software ? Thanks !
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Rotor / hub meshing best practise
Hello, What are the best practices for modeling the rotor hub–blade connection in transient simulations? Should a gap be introduced between the blades and the hub? Is it preferable to remove the hub entirely? Or should a gap be defined between the hub and the fixed geometry while allowing the hub to rotate? Thanks !
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The OptiStruct Optimization Professional Specialist Certification is now live!
The OptiStruct Optimization Professional Specialist Certification is now live on the learning platform! This certification covers using OptiStruct to setup and solve various optimization types, including OptiStruct features, capabilities, and formats, elements, properties, and materials, loads, boundary conditions, and…
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The OptiStruct Dynamics Professional Specialist Certification is now live!
The OptiStruct Dynamics Professional Specialist Certification is now live on the learning platform! This certification covers using OptiStruct to setup and solve modal, frequency response, acoustic, random vibration, and rotordynamics analyses, including OptiStruct features, capabilities, and formats, elements, properties,…
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The OptiStruct Statics Professional Specialist Certification is now live!
The OptiStruct Statics Professional Specialist Certification is now live on the learning platform! This certification covers using OptiStruct to setup and solve linear and nonlinear static analysis, including OptiStruct features, capabilities, and formats, elements, properties, and materials, loads, boundary conditions,…
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The OptiStruct Essentials Associate Specialist Certification is now live!
The OptiStruct Essentials Associate Specialist Certification is now live on the learning platform! This certification covers using OptiStruct essentials for finite element simulation analysis, including OptiStruct features, capabilities, and formats, model entities such as elements, properties, and materials, analysis…
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The EDEM Essentials Associate Specialist Certification is now live!
The EDEM Essentials Associate Specialist Certification is now live on the learning platform! This certification covers the fundamental EDEM concepts and main Contact Models used to simulate granular materials. including how to set up a model in the Creator, the key parameters in the Simulator, and how to analyze bulk…
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📢 Upcoming Session Alert! Breaking Simulation Barriers: HPC for Next-Gen Power Electronics
Get ready for our next insightful session on April 9 : Breaking Simulation Barriers: HPC for Next-Gen Power Electronics Join us for an insightful one-hour webinar designed for electrical engineers seeking faster, more efficient simulations in power electronics. High-Performance Computing (HPC) is revolutionizing the way…
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📢 Upcoming Session Alert! Dive into AI-Driven Reduced Order Models for Power Converters!
Hi Everyone, Get ready for an insightful session coming your way soon: "Practical Insights from Developing AI-Driven Reduced Order Models for Resonant Power Converters" This event is part of the Community Power Conversion and Motor Drive Series. The challenge: High-fidelity simulations of resonant power converters can take…
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February & March 2026 Community Event Lineup is Here!
Get ready to dive into an exciting lineup of events designed to help you get the most out of your Altair tools, connect with fellow users, and expand your knowledge! Whether you're looking to master new features, explore advanced applications, or simply connect with other enthusiasts, our upcoming events have something for…
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Upcoming Community Electromagnetics Chat: Advanced Winding Modeling and Selection in FluxMotor
Are you an eMotor designer or a FluxMotor user looking to push the boundaries of performance and make smarter design decisions? Then you won't want to miss our next Community Electromagnetics Chat Series session on February 19, 2026 at 10 AM Eastern Time. Join us for an in-depth technical session on "Advanced Winding…
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Radioss で摩擦を熱に変える例題
はじめに Radioss の接触 /INTER/TYPE7 と /INTER/TYPE25 には、摩擦エネルギを、熱エネルギに変換して、熱伝導解析の熱源とすることができます。 本記事では、簡単な例題を一つ示しながら、入力内容について説明していきます。 例題と説明 ダウンロード: 摩擦で熱が発生している様子。 本例題は、こちらの公式例題を元に作りました。 https://help.altair.com/hwsolvers/rad/topics/solvers/rad/thermal_analysis_example_r.htm この例題は、摩擦を熱には変えませんが、接触による熱伝達 (/INTER/TYPE7 内で設定) と、その熱伝導…
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New Community Session - Optimized Component Selection for Multi-Stage Power Conversion Systems
We're thrilled to announce the next insightful session in our popular Power Conversion and Motor Drive Chat Series, focusing on a crucial aspect of power electronics design - Optimized Component Selection for Multi-Stage Power Conversion Systems What You'll Discover in This Session: Optimize Transistor Selection: Learn a…
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Neuber Correction Utility for Stress/Strain Results Files
Overview: This is a GUI-based Compose Distributable that performs Neuber correction on HyperView results files. Features: Load .h3d results files and select one or multiple subcases for processing Choose stress and strain datatypes and components from the loaded file (the maximum value among selected components is used for…
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/FAIL/ENERGY を使って、要素の内部エネルギ密度で要素を削除する例題
はじめに タイトルには、内部エネルギ密度と書きましたが、特に難しいことではなく、応力ーひずみ線図の塗りつぶす面積のことです。 /FAIL/ENERGY のリファレンスより抜粋。 ゴムやスポンジなどの、超弾性、粘弾性材料には、材料自体に破断基準がないため、要素を削除するには、何か追加で必要になるわけですが、/FAIL/ENERGY はわかりやすい部類に入ると思います。 例題は、最初に、/FAIL/ENERGY を使わずに応力ーひずみ線図を取得して、そこから破断させるエネルギの値を求め、その次に、/FAIL/ENERGY を与えて破断させる、という流れです。 カードの説明 必須項目は E1, E2 のみです。例題でも、この 2個だけ使います。…
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/LOAD/PFLUID で簡易的に空気抵抗を模擬する例題
はじめに Radioss でまじめに空気抵抗を模擬しようと思うと、流体構造連成解析が必要になります。ただ、そこまでモデルを複雑にしたくなくて、速度の二乗に比例するようなものを簡易的につけるだけでいいです、という場合は、/LOAD/PFLUID が利用できます。 本記事では例題を一つ示します。 空気抵抗を模擬する場合の /LOAD/PFLUID の設定方法 /LOAD/PFLUID 自体は、下の式で表されるように、圧力と速度の2乗に比例する抵抗を考慮できます。しかし空気の場合、構造に影響を及ぼすほど有意な差が空気圧に出るほどの巨大な構造物は、まずないと思いますので、この左の項は、無視して、右の項だけ使います。…
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接触した後、離れにくくする 3個の例題
はじめに Radioss では、接触した後、離れにくくするような手法が 3通りあります。この記事では、それぞれの手法ごとに、例題を提示します。 例題1, VISs による粘着性の表現 ダウンロード: 例題では /INTER/TYPE25 を使っていますが、TYPE7, 11, 24 にも同じオプションがあります。この方法の利点は、どの接触タイプでも利用できることです。 使うのはこのオプションです。実は安定性も加味して、デフォルトで 0.05 が入っているため、知らず知らずのうちに使っています。 働きとしては、接触領域に侵入した節点に対して、移動方向とは別の向きの力を発生します。要は粘性力ですので Viscosity から VIS を取って…
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/FUNCT_PYTHON をバネ要素特性に適用する例題
はじめに v2026 から /FUNCT_PYTHON をバネ要素プロパティに適用できるようになりました。 本記事では /PROP/TYPE25 (/PROP/SPR_AXI) に適用する例題を示します。 なお、Python やコードの中身については説明はしません。委託を希望する場合は、担当営業にお申し出ください。 例題 ダウンロード HyperMesh 2026 でも /FUNCT_PYTHON に未対応なので、読み込んで吐き出すと壊れます。上書きしないなど、取扱に注意してください。 この例題ではバネを押し込むことで、板を回してみます。 Radioss…