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polyhedral solver
Hi, does anybody know if I can use polyhedral solver with my Student Edition license? I imported my custom particle in STL format but when I try to start the simulation the program suddenly closes without any alert. Im using 2024.1 version of Altair EDEM.
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Unnecessary elements are displayed opaquely in element quality.
In element quality, i can check the elements that are not satisfied with the requirement in the legend tab on the right. Other elements are not displayed, and only the unsatisfactory elements are output. When I check the element quality again after doing several tasks, unnecessary elements are displayed in transparent…
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Freezes and lags in HyperMesh v2025 and v2024.1
Hello, I'm experimenting lags in HyperMesh on my DELL Precision 3490 (specifications in the linked image). Whenever I want to zoom, move or rotate my models, the software freezes for a couple of seconds before I can actually inspect it, and then I get to see like one image per second of me moving it. I checked in my task…
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HS-1090 | Step2 not possible | could not test model
Hello to all. I am studying HST to create new workflows. Currently I wanted to redo HS-1090 as tutorial. However, everything runs fine till end of described step1. Adding Lookup, and setting csv was successful, but now I could not run Test Model since the Button "Next" deactivated and "gray". Do you have teh same issue?…
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Printout: Keyboard Shortcuts / Quick Tips - Altair HyperMesh 2025
Overview Reminder of interesting / frequently used keys and a bit of other functionality in HyperMesh 2025. Slight focus on experienced HyperMesh Legacy users (check the red fonts). Use in electronic form or print, fold, glue, then place by monitor for easy review.
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Using the Torque Controller in EDEM to account for geometry Movement.
Hello, I am fairly new to the ALTAIR software and I am currently using it for my master's thesis. I want to couple a MotionSolve simulation with an EDEM simulation. The EDEM simulation I want to couple with MotionSolve revolves around a geometry that travels through a field of particles with a constant velocity. i created…
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[HyperMesh] Combine 기능을 사용해 여러 Solid를 하나로 병합하는 방법
접하거나 겹쳐있는 다른 Solid간 병합을 원하는 경우 Combine 기능을 사용할 수 있습니다. 해당 기능은 상단 3D 메뉴 > Boolean > Combine 을 통해 접근할 수 있습니다. Find: 병합할 Solid를 자동으로 찾아서 선택합니다. ← → : 교차하는 각 솔리드 확인 Merge Solids: Solid간 공유 중인 Surface를 삭제하고 병합 Keep common interface: Solid간 교차면 유지 [Solid를 하나로 병합하는 경우] Find를 눌러 자동으로 찾거나, 직접 solid를 선택하여 Combine All 하면 병합됩니다. [교차…
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Thermal Radiation Simulation with OptiStruct
Hi everyone! As the headline says: I'm trying to find a way to implement thermal radiation effects into my heat transfer analysis. Is there a way to do that in Hypermesh with OptiStruct? I found the RADM Bulk data entry on the altair help forum, but i have no idea how to implement it in hypermesh
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[HyperMesh] Freeform(General 2D mesh)을 사용한 Remesh 방법
Freeform을 사용해서 Remesh하는 방법을 안내 드리겠습니다. 해당 방법은 이미 생성된 mesh를 새롭게 Remesh할 때 사용할 수 있으며, Imprint나 Connector의 Adjust mesh > remesh 옵션을 사용했을 때 mesh가 과도하게 쪼개지는 경우에도 적용이 가능합니다. 해당 문제는 FE edge(노드 사이 연결 edge)가 잘 정의되지 않으면 발생할 수 있습니다. 사진처럼 Hole이나 edge가 많은 형상에서 imprint나 adjust mesh를 사용하는 경우 비슷한 문제가 발생할 수 있습니다. Element selector로 설정을 변경하고…
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パワーエレクトロニクスにおける発熱と温度予測シミュレーションの活用
本記事では、パワーエレクトロニクスにおける発熱とその温度予測シミュレーションについて紹介します。 エレクトロニクス設計において、過加熱は部品の寿命や信頼性を著しく低下させる要因となります。さらに、一つの部品が故障するとシステム全体が正常に動作しなくなる可能性があるため、熱管理は極めて重要です。 本記事では、パワーエレクトロニクスと熱流体シミュレーションを活用し、電子デバイスの発熱と温度を予測する手法について解説します。 Altair PSIM によるパワーエレクトロニクスのスイッチング動作のシミュレーションを通じて、電子デバイスの発熱を計算します。 Altair SimLab / ElectroFlo…
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Erorrs in Altair EDEM
Hello, I have a problem when saving a file in Altair EDEM, the following errors are displayed and I don't know how to deal with it. Maybe someone had this?
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[HyperMesh] Plane을 기준으로 Entity를 이동, 복사하는 방법(Mirror 기능)
HyperMesh에서 Plane(면)을 기준으로 Entity를 이동, 복사하는 Mirror 기능에 대해서 안내 드리겠습니다. 상단 Move 리본 옆 삼각형을 눌러 Mirror 기능에 접근할 수 있습니다. Components: 대상 Entity 선택 Plane: 기준 면 지정 Show Preview: 체크 시 화면에 미리보기 표시 Keep Original: 체크 시 복사, 해제 시 이동 Show Preview의 경우 빨간색으로 표시됩니다. Keep Original 체크 시 Entity가 복사됩니다. 감사합니다.
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Suitable Contact Model for EDEM
Hi Altair Community, I am currently using EDEM v2024.1 to model rock behaviour. However, I have noticed that the built-in Bonding V2 model does not account for microcrack closure, which can lead to an initial increase in the overall mechanical properties of the material (e.g., Young’s Modulus) before reaching a certain…
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Running SimLab on HPC without GUI
Hello, I'm trying to use SimLab on a HPC, but I'm not sure how to run a simulation via command prompt without the GUI. I'm able to set up the case, it's just a matter of calculating. I'd like to run simulations using SimLab by itself (using AcuSolve), as well as SimLab coupled with EDEM. Any advice would be greatly…
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Altair SimLab / ElectroFloとHyperStudyを活用した電子機器の熱解析DOE手順書
Altair SimLab / ElectroFloの高度な熱解析機能とAltair HyperStudyを組み合わせることで、電子機器の熱解析におけるDOE（実験計画法）を効率的に実行できます。 本投稿では、Altair SimLab / ElectroFloを用いて電子デバイス、ヒートシンク、ファンの熱解析モデルを構築し、それをAltair HyperStudyと連携させることで、発熱量・ファン速度・周囲温度の変化に伴うデバイス温度を自動で算出する手法を解説します。さらに、取得したデータを活用し、フィットモデル（予測モデル）を作成するプロセスについても紹介します。 下記より、手順書およびモデルをダウンロードいただけます。ご利用ください。…
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SimLab / ElectroFloを用いた電子機器の熱解析手順書
Altair SimLabおよびElectroFloを使用すると、複雑な形状や空気の流れ、熱経路を考慮しながら、電子デバイスの温度解析を迅速に行うことができます。 本投稿では、問題を単純化し、「デバイスの発熱」「ヒートシンクへの熱伝導」「ファンによる冷却」を考慮した解析手順書を作成しました。本手順を用いることで、指定したデバイスの発熱量、ファンの風速、周囲温度におけるデバイス温度を予測できます。 下記より、手順書およびモデルをダウンロードいただけます。ご利用ください。 使用ソフト： 大規模有限要素モデリングとアセンブリ | Altair SimLab
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OptiStruct 에서 물성 암호화 (encypt) 방법
Radioss interface의 경우 자체적으로 encrypt 기능이 존재하지만, OptiStruct 의 경우 os_encrypt_win.exe 응용 프로그램을 사용하여 암호화를 해주실 수 있습니다. OptiStruct 기준, 간단한 사용방법은 아래와 같습니다. Step1) Material 정보가 담긴 fem 파일 저장 Step2) MAT 항목 이름과 ID를 제외한 모든 필드를 암호화하려면, fem 파일 내에서 Material 구문의 ID를 제거 후 text 파일로 저장 Step3) window 기준, cmd 창에서 아래와 같이 os_encrypt_win.exe 경로로…
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Is the boiling model in Acusolve possible to model film boiling?
Hi Experts, As mentioned in the title, I'm wondering that the applicability of this boiling model outside the nuclear boiling range (i.e. natural convection boiling, transition boiling and film boiling). Thanks and regards, Gary
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Post Hole Digger: EDEM-OS Two Way Coupling
Background: A post hole digger is a drilling tool that uses a rotating helical blade to drill holes into the ground/soil. It's also known as a tractor screw auger or earth auger: The auger has a metal blade or bit with a helical, spiral shape The blade rotates, acting like a screw to pull material upward as it drills into…
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1DバッテリーモデルEnergy Storage Libraryの使い方
アルテアの1DシミュレーションツールTwin ActivateのEnergy Storage Libraryを使用すると、多段RCペアを含む高機能なバッテリーの1D等価回路モデルを使用できます。 また、パワーエレクトロニクスシミュレーションPSIMとの連携も可能で、パワーコンバーターを含むバッテリーの充放電シミュレーションも可能です。 今回は、多段RCペアを含まないPSIMのサンプルバッテリーモデルの特性をEnergy Storage Libraryのバッテリーモデルで再現するチュートリアルを作成しました。 そのほか、発熱計算、1D熱モデルとの連携による温度依存性の考慮など、さまざまな機能をご利用いただけます。 お試しください。…
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Issue with LEBM in EDEM v2024.1 at Larger Time Steps
Hi Altair Community, I am currently using the Linear Elastic Bonding Model (LEBM) in EDEM v2024.1 following the tutorial in the attached link: 🔗 EDEM Physics Model Tutorial - Linear Elastic Bonded Model I encountered an issue when increasing the time step from the original 2e-5 to a larger value, such as 5e-5. When using a…
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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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Fundamentals of N-Dimensional Lookup Tables in Twin Activate
Twin Activate is a block diagram simulation environment for modeling dynamic systems. It features several blocks that approximate non-linear functions using lookup tables, which are often useful in systems modeling. In this short guide, I want to show how N-dimensional lookup tables blocks should be used in Twin Activate…
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Accelerating Battery Charging Simulations with Altair romAI - Part 2
Data Preparation and Format Conversion Now that I have all the simulation results from the DOE, they need to be formatted specifically for romAI, which requires a single CSV file with time in the first column, followed by all training signals (inputs, outputs, and states) in subsequent columns. This file contains data from…
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Accelerating Battery Charging Simulations with Altair romAI - Part 1
Introduction As the world shifts toward electric solutions, battery charging technology has become a cornerstone of modern innovation. At the heart of this technology lie power converters - sophisticated devices that manage the crucial task of delivering power to batteries efficiently and safely. Designing these power…