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Altair Community February 2025 Roundup
Hi Everyone, Greetings to our regular members and a warm welcome to newcomers who may be joining us for the first time! I hope you are enjoying the spring sunshine. Here is our roundup for February for the Altair Community 🏆February's Leaderboard Huge shout out to our Top Monthly Leaders! 🎉🎉🎉Thank you so much for…
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Community Champion of the Month - February, 2025
The Community Team would like to introduce the February Champion of the Month, Jagan Adithya Elango @Jagan . Jagan is a Design Engineer who is passionate about solving engineering challenges by applying his knowledge of CFD, thermodynamics, fluid mechanics, and heat transfer. He has experience modeling conjugate heat…
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Guidelines to ask a question in the community
Asking clear, well-structured questions helps experts understand your problem quickly and provide better solutions. Taking time to format your question properly increases your chances of getting helpful answers. Guidelines for Effective Questions: Research first: A solution to your problem may already exist in the…
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why am I unable to resume accidently closed Abaqus job (cmd driven)?
Description: I had run an analysis through cmd window for abaqus profile . Accidently tab was closed and analysis stopped and i m not able to resume through cmd "Abaqus resume job=jobname". Please help in resuming job. Product/Topic Name : Abaqus analysis
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Particle Generation
Hello, Does anyone know why my particles are not appearing during simulation? I click the autoupdate option Also, in the report section, I am seeing the particles are being generated, but they are appearing in the box as shown in the picture below.
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Add separator to custom dialogs ribbon in SimLab
Hi, I've been creating some custom dialogs that I've added to the ribbon using the Dialog Designer → Add Created Dialog To → Custom Ribbon. I now would like to customise the appearance of the ribbon by adding some separators to group some functionality. Currently the ribbon looks like this: And it would like it to look…
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structural members on SIMLAB
I have a geometry, that is, a drawing only in lines, to which I need to add structural profiles such as pipes, C-type profiles, etc. The geometry is a rollcage. How can I do this in SIMLAB?
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My radioss program doesn't work after increasing the density of the grid
This is my sparse grid project file. Because the project file after increasing the grid density is too large to add attachments, an error will be reported after increasing the grid density. The error screenshot is as follows The message in .out file are as follow I have already run a model check in hypermesh to ensure…
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Issue Importing Excel/CSV Files in RapidMiner on MacBook
I’m unable to import my Excel (.xlsx) and CSV files into RapidMiner on my MacBook. When I click the file selection icon, it shows my folders (Desktop, Downloads, etc.), but no files appear. What I’ve Tried: Moved the file to Desktop, Documents, and Downloads. Manually entered the file path. Refreshed the folder view in the…
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manually deactivating the license
Hello today I had to reinstall Windows 11 on my computer, but unfortunately, I wasn't able to deactivate my license beforehand. The hardware has not changed, only the operating system was reinstalled. Could you please assist me by manually deactivating the license so that I can reactivate it on my current installation?…
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How can I retrieve the element ID as shown in the entity editor via *createmark
Hello, I have a model where the same element ID is used for structural elements (Cquad) and cweld elements. I want to retrieve the element IDs of all cwelds in the model in tcl, so I used *createmark elem 2 "by config type" 0 mass CWELD But now I retrieve other IDs than the ones visible in the entity editor for the cwelds.…
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제 10편 Meshing 소개 -2-
제 10편 Meshing 소개 -2- 이제 Meshing을 해볼까요? 1. 지오메트리를 체크! 일반적으로 cad 데이터는를 받고 CAD 형상에 문제가 없는지 확인해야 되겠죠? Free edge 체크 CAD가 깨지진 않았는지? 매우 작은 필렛, 매우 작은 구멍들이 있는지 – meshing 주의 지역!! 모델이 대칭인지? 1/2모델 혹은 1/4모델로 축소하여 meshing가능한지 확인! 2. 지오메트리 수정! 일반적으로 CAD모델에 바로 meshing 하는 것은 어렵습니다. 그러므로 meshing하기 좋게 geometry를 자르고 수정! 그래야 meshing도 쉽고 mesh…
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Why is my Flightstream ground-plane unsteady simulation not converging?
Hello, I'm trying to model a vehicle in hover and cannot get the solution to converge. If you could shed some light on why the solution is not converging, it would help a lot. What I have tried: Tried a single propeller without ground (viscous and inviscid) and it works. Tried two propellers and without ground, and it…
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제 9편 Meshing 소개 -1-
제 9편 Meshing 소개 -1- 이번에는 Meshing에 대해 소개를 하려고 합니다! Node와 Element의 그물망 형태를 Mesh라고 하고, Mesh를 만드는 것을 Meshing이라고 합니다. 사람에 따라 Modeling 한다고 하기도 합니다. :-) Mesh의 Element에는 여러가지의 타입이 있어요. 1D, 2D, 3D Element 들이 아주 많이 있답니다!(솔버마다 이름이 달라요 @.@) 해석자는 알맞은 Element의 타입을 선택해서 Meshing해야합니다. 왜냐하면 타입에 따라 해석 계산 시간, 결과가 달라질 수 있기 때문이죠! 저는 어떤 Element…
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非線形静解析でも自動接触を使う例題 (v2025 以降)
始めに OptiStruct 2025 から、非線形静解析でも自動接触（接触ペア作成不要）が使えます。その例題です。 https://help.altair.com/hwsolvers/os/topics/chapter_heads/whats_new_r.ht 例題モデル ダウンロード: お題です。 フォーマットです。 この例題では、全体に摩擦係数 0.2 を与えています。 このようにきちんと接触します。
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Manufacturing Constraints for Design Optimization
I am trying to optimize a part so that the material removed will be through holes only in one plane ie a consistent cross section. I thought that the way to achieve this is through an extrusion or a draw, but the optimization results are random nodes with some just floating in free space. In the design variable, I have set…
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Particle Shape Combination
Please, I want to ask what are the different particel shape combinations or bondings that are possible with EDEM version 2025. I have some list below; please let me know which ones are possible and any other particle shape combination that is not on the list. Spherocylinder and sphere Spherocylinder and spherocylinder…
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RUNFEKO: Abort(1614735) on node 0 (rank 0 in comm 0): Fatal error in PMPI_Init_thread
Description: I am using Feko 2025 with a student license, and I am encountering an error when I enable parallel processing when running RUNFEKO. The complete log with debug logging enabled is attached below. The error I am encountering appears related to this community post, where my error corresponding to the first side…
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DSim Studio waves.mxd Error: "libmxd failed to load."
Description: I want to use DSim Studio to simulate Gowin FPGA designs. I followed the tutorial: Tutorial: DSim Studio for GOWIN. I was sucessfully able to compile and run the example design, however when I tried to view the waveforms with waves.mxd I got this error Error libmxd failed to load. You may be on an unsupported…
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Deactivation of SUBCASES - Altair Hyperworks
Hi, I need to run an analysis with some subcases (e.g. Static Analysis) and i Want to deactivate some other subcases, such as the Modal analysis. Thanks in advance for the answers.
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Altair students licensing
hello I activated my license last year but this computer is no longer working. how to deactivate the license this computer.
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parametric altitude scan in winprop
Hello, I am wondering if there is a way to perform a parametric altitude scan in winprop and automatically retrieve the analysis rasters output. Many thanks, Nicolo
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Mathematic algorithm used in Stacking Sequence Optimization (Shuffling Phase)
Hello, good afternoon. I am conducting a three-phase optimization for composite material structures using Altair: . According to OptiStruct, the default optimization methods for free-size and size parameters are the DUAL2 optimization method (based on the CONLIN algorithm) and the MFD method, respectively. However, despite…
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PSIM Software와 파이토치 연동에 대한 질문
안녕하십니까. 경상국립대학교 전력전자 연구실에서 전력변환기 제어를 연구하고 있는 석사 1기 장진수입니다. 현재 과제를 진행 중 PSIM과 파이썬 언어 혹은 파이토치의 연동법에 대한 질문을 드립니다. 파이썬으로 생성 및 학습시킨 AI를 통해 전력변환기를 제어하려고 하여 연동법이 꼭 필요한 상황이라 엔지니어님께 문의 드립니다. 긴 글 읽어주셔서 감사합니다. 전력전자 연구실 장진수 올림
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How do I get the sidebar to comeback
I was doing some work and accidentally closed the sidebar. and was wondering how to get it to reappear.
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Road data is not loading during creation of tracked vehicle by using roads tool
I am not able to read the road file data from the roads tool when i select the roads file it cant read the file and all the parameters stick to zero
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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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Finding out EDEM version of old simulations
Description: I have some ‘old’ simulation data and would like to find out in which version of EDEM this was simulated. I have searched into the following files: .h5 data file; nothing found about EDEM version .DEM; unreadable in notepad .dfg; can read in notepad, but nothing found about EDEM version .efd; unreadable in…