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Community May 2026 Roundup 📣
🌟 Altair Community Update: Events, Highlights & What’s New Hello Altair Community! Welcome to this month’s community roundup—your go-to source for the latest discussions, expert insights, and standout solutions. Whether you're here to troubleshoot a challenge, discover new techniques, or stay up to date on trending topics,…
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SimLab silently crashes on startup
Hello, I have installed SimLab on a remote Windows machine. The issues is that when I start the program it silently crashes. I tried the same steps on my personal windows machine and it worked. Any ideas why this might happen? When I go into windows Event Viewer I get this error Faulting application name: hwx.exe, version:…
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SimLab silently crashes on startup
Hello, I have installed SimLab on a remote Windows machine. The issues is that when I start the program it silently crashes. I tried the same steps on my personal windows machine and it worked. Any ideas why this might happen? When I go into windows Event Viewer I get this error Faulting application name: hwx.exe, version:…
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How to Fix this?
My groupmate attempted to click 'Update' in the solver settings, but we received the attached error message. Any ideas on what is causing this?
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No bodies present in solution" after importing STEP geometry
Hello everyone, I am new to Altair SimLab 2026 Student Edition and currently trying to perform a CFD simulation using AcuSolve. I imported a STEP model of a microfluidic chip with an internal serpentine channel and successfully created a CFD mesh. However, when setting up the CFD analysis, I encounter the following issues:…
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Issue with selecting the Region of propagation in Streamer Criterion
Hello everyone, I would like to use the Streamer Criterion tool for my electrostatic simulation. The issue is that when I run it I get an error saying "Failed to compute some of the streamers". I suspect the problem is that the UI does not allow me to select my Air Bounding Box as the "Region of propagation". The input box…
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Can EDEM couple with the explicit algorithm of a structural solver other than OptiStruct?
I have a polyurethane screen panel. Using MotionView, I’m not able to reproduce its motion, and the panel also needs to interact with bulk material. Therefore, I am considering using OptiStruct as the solver. However, I feel that OptiStruct does not provide as many explicit analysis control options as Radioss. So I would…
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Am I doing things right?
Right now, I am working on my undergraduate thesis and trying to validate my simulation. However, I am having trouble matching the pressure drop reported in the reference paper. Could you help me identify what I might be doing wrong?
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SimLab Force Computation fails with FluxExport.fem not found and Flux2DSolver license error
Hello, I am using Altair Student Edition with SimLab/HyperMesh 2025. When I run Motor NVH Force Computation from the SimLab/HyperMesh GUI, Flux is launched in the background, but the process fails. FICOUV => No such file or directory .\FluxExport.fem ./FluxExport.fem : File not found Feature(s): GlobalZoneAP, HyperWorks,…
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Simlab2026 Crash
I installed Simlab 2026 from the Altair marketplace. After installation, the tool worked and I was able to import my design then mesh it. I saved my progress for the day. The next day when I tried to open the tool again, the Simlab window opens for a second and then the program crashes. On investigating further, I see that…
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Unable to export mesh support file for Flux in SimLab motor NVH example
Hello, I am following the Flux-SimLab / Flux-SimLab-OptiStruct Electric Motor NVH example. At the SimLab mesh export step, the tutorial says to select the stator tooth faces and then use: Advanced > Trials > Flux This should create the mesh support file: Mesh_SimLab_ForFlux.fem However, in my case the .fem file is not…
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Simlabでの自動HEXメッシュ作成時に、ボディ間の要素結合がされない原因
Description: Kindly add description here 添付のCADデータからメッシュ作成をしたいと考えております。自動HEX機能でメッシュを作成すると、ボディ間の要素結合がされません。またメッシュ作成後に結合させようとしてもうまく結合できません。対応方法についてご教示いただけないでしょうか。 Product/Topic Name : Kindly include the product name, version if applicable here. Also, Don't forget to tag with the product/topic related to your question.…
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Altair SimLab 2026 における Python スクリプト自動実行方法についてのお問い合わせ
Altair サポートご担当者様 お世話になっております。 現在、Altair SimLab 2026 を使用し、バッチファイルおよび Python スクリプトによる自動処理環境を構築したいと考えております。 実現したい処理は以下です。 SimLab 2026 の起動 Parasolid ファイル（.x_t）の自動読み込み メッシュ生成 HyperMesh 読み込み可能形式（可能であれば .hm）へのエクスポート SimLab の終了 現在、GUI 上では以下の操作が正常に動作することを確認しております。 Automation → Scripting → Record Automation → Scripting → Run…
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How to extract S-Parameters for Shunt Capacitor in SimLab?
I am working in Simlab and have a very simple cylindrical "air" capacitor. It's comprised of: Outer housing with ID = 6.00 inches and a thickness of 0.125 inches Solid inner conductor with OD = 5.00 inches that's it, all suspended in air. I am able to extract s-parameters from the solution parasitic extraction, however…
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How to either Design a Parametric Motor Model in Simlab or Import one?
I tired to create one using Solutions > E-Motor > Flux Motor > Inner magnet. Then when i go to create Outer slot it says "Please delete existing sketches to create a Outer Slot", i need both to create the 2D Profile of the Motor. Í'm i missing something? Thanks
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Saving solved 3D EM projects in SimLab 2026
Hi everyone, I am currently working with SimLab 2026 and Flux 2026 for a 3D Electromagnetics simulation, and I have two questions regarding the data workflow and saving results. 1. Saving Solved Projects in SimLab: What is the correct procedure to completely save a solved 3D project directly within SimLab 2026 so that the…
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SimLab Volume Mesh Error (Overlap edges) - Conflict between MRF Fluid Interface and Boundary Layer G
I am encountering an issue during volume mesh generation in Altair SimLab while working on a CFD model of a jet mill (including a high-speed rotating classifier wheel). I would like to seek your professional advice on the recommended workflow for this scenario. [Model Setup] Topology: The model consists of two fluid…
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How to seal holes in a shell
I'm trying to fill a hole in a shell model in SimLab. Let me explain in detail. I used BreakFace to cut a shell without free edges into two halves. The cut ends of the shell have holes where the free edges used to cut them were. I want to fill these holes in the shell with the surface I used for BreakFace. Is there a good…
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internal mesh face for Electric Loop Cut in 3D Transient Magnetic
Hello everyone, I am currently setting up a 3D Transient Magnetic simulation in Altair SimLab 2025 (Flux solver) and I am running into a connectivity issue where the software tells me that some of my parts (like the stator) need Topological Cuts. To solve this and create the Electric Loop Cut and Magnetic circuit cuts, I…
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Seminar about parallel computation
Hi everyone, I am checking the resources that Simlab provides for parallel computation and I can not find a lot about this topic. Could anyone address me to something useful to run several (parametric) simulations simultaneously? If not, would it be possible to make a seminar about this topic, as I think that many of us…
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How to reduce computation time in Simlab
Hi everyone, I am running a big simulation in Simlab and it takes a huge time to finish as it needs to go through several parameters to be completed. Does any of you have a suggestion on how to speed up the computation time? I already set the number of the cores to the maximum, but I still do not see a noticeable…
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SimLab Meshing Issue – Disconnected Mesh & System Performance | Electric Motor Model
Dear Altair Support Team, I am currently working on a meshing project in Altair SimLab and facing several issues. I would appreciate your guidance on how to resolve them. SOFTWARE & WORKFLOW CAD model created in PTC Creo, exported as .stp file Imported into Altair SimLab for meshing Model consists of individual parts of an…
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Definition of Motor Inductance in Circuit
Hello everyone, I see that in tutorials an inductance in the motor circuit is defined but I do not understand how this is calculated. Could you please provide a help in calculating this value for an axial-flux motor? The inductance changes with the rotor position, so how could I already give it as input in the circuit…
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Reporting of two bugs in Simlab electromagnetics
When I used imposed current with a parametrized current that should change over time, the current does not update over the rotation. It does with a circuit tho. When I go on solver settings→ Results request and a circuit is defined in my case, the software crashes. It does not crush if the current is given through the…
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Exterior acoustic simulation of Motor to predict SPL using Surface velocity data a input?
Hi, I have a surface velocity data of E-motor/Engine generated by third party MBD solver in .pch file format. I would like to use this data as a excitation to predict the exterior noise at 1m distance microphones. I have looked at the documentation of IE, RADSND & APML methods in optistruct. Surface velocity required for…