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Community Champion of the Month - September, 2025
The Community Team would like to introduce the September Champion of the Month, Dr. César Pérez @Caperez. Dr. César Pérez is an industrial engineer and scientist whose career bridges higher education, research, and business leadership. His work spans complex dynamic systems, materials science, data analysis, and…
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Altair RISE : Program to Recognize and Reward our most engaged Community Members
🚀 Altair RISE Program We're excited to launch an exclusive 6-month program designed to recognize and reward our most engaged community members! Whether you're answering questions, sharing solutions, or participating in discussions, RISE gives you recognition in the community while helping you grow your expertise. Progress…
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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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Student Edition – Unable to reactivate after PC reformat (activation tied to previous HostID)
After reformatting my computer, I’m unable to reactivate my Altair Student Edition license for FEKO. What I’ve already tried Ran Altair License Utility as Administrator. Cleared the local license store folder (…\AppData\Local\.altair_licensing\WS\licenses) and removed any old altair_lic.dat. Verified the current HostID in…
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Quality Check Criteria
Just noticed something that is troubling me. When looking at Element Quality in 2025 version of HyperMesh/Optistruct, in the Criteria display, even though I have set the criteria in the Criteria Editor, the Iso plots in "Criteria" don't use the same Fail criteria. For example, in the image below, the aspect ratio Fail is…
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RE Altair Personal SLC: Computing Levenshtein distances
RE Altair Personal SLC: Computing Levenshtein distances https://community.altair.com/discussion/47328 data levenshtein_example; length str1 str2 $20; str1 = "kitten"; str2 = "sitting"; /* Calculate Levenshtein edit distance */ distance = complev(str1, str2); put "Levenshtein distance between " str1 " and " str2 " is: "…
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Re: Altair personal slc: Slope Function
Re: Altair personal slc: Slope Function Calculate slope based on current and previous points https://community.altair.com/discussion/comment/197257 Note that the value of the natural exponential function is unique in that the derivative(point slope) is equal to itself. Makes checking easy /--- create input data two columns…
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In spingback operation, what's EXPLICIT feature? (IF2025.1)
When you're performing a springback simulation with Inspire Form 2025.1, at the right click on its icon, an "EXPLICIT" option will appear? Does anyone know what is it & what's happend using it? Thanks
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Altair personal slc odbc connections to and from ms sql server with and without passthru
Altair personal slc odbc connections to and from ms sql server with and without passthru Too Long to post here, see git hub TWO SOLUTIONS 1 without passthru (explicit-execute using sas language) 2 with passthru (implicit - execute using sql server sql dialect inside the sql server database) github…
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License Reset for Student Edition After PC Format
Hello, I recently had to format my computer, and now I am unable to reactivate my PSIM Student Edition license. I am receiving the error: "Error activating license: This license was already activated using different HostIDs." Could you please reset my license activation so I can use it on my computer again? Thank you for…
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SPH Components Not Visible After Simulation in Altair Radioss
I am attempting to model the soil–tool interaction using Altair Radioss. The soil bin was meshed using SPH (Smoothed Particle Hydrodynamics) particles. The input files used for the setup are attached. However, after running the simulation, the SPH components are not visible in the results. I am unable to identify the cause…
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EDEMpy: Script to export a simulation deck
Overview: You can export the simulation deck during your simulation. Exporting a deck allows it to be transferred to another location and run using identical simulation parameters. This script replicates the export simulation deck feature in the Analyst. Simulation Deck Prerequisite: To run this script, h5py, numpy and…
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i want to simulate the power required for my vehicle during acceleration
i am a complete beginner to altair, i came here to simulate the required power of my vehicle during acceleration and the increase in power during turns. I want to know whether i can simulate this. If yes, i want to know which software should i use and a guide on how to use.
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OptiStruct license check fails in ACC & CLI, but works when launched from HyperMesh
Hello, i have a Hypermesh student license. When I run the same model from HyperMesh, the analysis with optistruct works fine. But when starting from Compute Console or the terminal i get the error: Altair Managed Licensing: License error Feature: OptiStructFEA Error Code: -40 Error Description: [LicID -1] (Err: -40) While…
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How to export include file with apply quote rules
Description: How to export include file with "apply quote rules" enabled. Normally if we export a file by File » Export, we have bunch of options as below But if I try to export a single include file by right clicking the include file » Export » selected include, then I get only a fewer options. Mainly the apply quote…
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Fastener Set Up Huth Formula Details
Hello, I am modeling fasteners as RBE3-CBUSH-RBE3 using the Aerospace>Connections>Fastener Set Up tool in HyperWorks 2021.2 (MSC.Nastran interface). However, the K2 and K3 values for the fasteners I defined as bolts are slightly different from the values I calculated by hand. This situation is valid for both metal-metal…
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Simsolid: Mass and CG info o a group of parts
SImsolid: In the Assembly tree if i select multiple parts together and click on "info" tab from dropdown- It does no provide correct mass. Is there a way i can see mass and CG information of a no of parts together from the assembly tree?
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Optistruct: How to obtain the OP2 results in more than one set
Hi, I would like to obtain the OP2 results in more than one set that are already defined in the FEM model. Run file: $ $ -------------------------------- I/O OPTIONS -------------------------------- VELOCITY(OP2)=1034 VELOCITY(OP2)=1047 VELOCITY(OP2)=1049 $ ASSIGN,H3DDMIG,AX,Cond.h3d ASSIGN,EXCINP,ALL,SOL111.INP4 $ $…
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Modify vehicle parameters
Hello everyone, I have constructed a car model using a modelling approach. However, I wish to modify the parameters to increase the vehicle's minimum ground clearance so that it does not collide with the road during steep incline simulations. What method should I employ to make these adjustments? Thank you. Best regards！
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剛体 /RBODY と強制変位 /IMPDISP が過拘束でおかしな結果となる例題
はじめに Radioss の剛体 /RBODY は、自由に動き回っていることが多いので、ついつい忘れがちですが、剛体の真ん中の節点で、周りの節点の運動を完全に拘束している、非常に強い拘束条件です。 ですので、このように、剛体の周りの節点に同じく拘束条件である強制変位 /IMPDISP を付けるとおかしな結果になってしまうことがあります。 本記事ではこの例題について解説します。なおタイトルでは /IMPDISP としていますが /IMPVEL, /IMPACC にも共通します。 例題 ダウンロード: https://us.v-cdn.net/6038102/uploads/BPDVOSPIJDYO/model01.7z このモデルは、物体を…
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Connect NX with SimSolid
How can I display the “SimSolid Connect” line in NX, as shown in the second image from the YouTube video?
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“AcuSolve–EDEM Bidirectional 3‑Phase Coupling” module
Dear Experts, We are currently using the “AcuSolve–EDEM Bidirectional 3‑Phase Coupling” module and have encountered two questions: 1. When selecting “water”as the carrier phase, “EDEM particles” as Discrete Phase 1, and “air” as Discrete Phase 2, we would like to understand how the solver handles particle behavior once…
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GPU Benchmarks for EDEM: Consumer (RTX) vs Professional (V100/A100) Cards?
Hello EDEM Community, I'm in the process of purchasing a GPU specifically for accelerating large-scale particle simulations in EDEM. To make an informed decision, I'm looking for any available performance comparisons or benchmarks when using GPU acceleration in EDEM with consumer-grade vs professional-grade cards, such as:…
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Altair personal slc constrained linear regression to reduce penalties for over under estimates
Altair personal slc constrained linear regression to reduce penalties for over under estimates Too long to post on a listserve, see github github https://github.com/rogerjdeangelis/utl-altair-personal-slc-constrained-linear-regression-to-reduce-penalties-for-over-under-estimates community.altair…
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How do I download the Statistics Extension on Altair AI Studio?
I have a MacBook with the Intel processor and the 2026 version of Altair AI Studio with the student license. I have manually downloaded the statistics extension and moved it to the "extensions" folder under Altair AI in the Finder on my MacBook. I am unable to find the extension in the extensions or under operators after…
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Performance Issue with GPU CUDA Solver – GTX 5090 Slower than GTX 4070
Hi, I am currently working with EDEM 2024 and using the GPU CUDA Solver for my simulations. However, I have encountered a performance issue where my RTX 5090 GPU is performing slower than my RTX 4070 GPU in the same simulation tasks. Thank you very much for your time, expertise, and any guidance you can offer!
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Altair License Manager: STUDENT License Error. Code error: -40
Hello, I have some troubles with the Altair License Manager, even though I have an active license to use PSIM, the program displays an error. Which are shown in the images above. Anyone can help me?
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Community Magnetics Chat Oct 16: 3D Cad Based Parametric Workflow and Extrusive Mesh
Our next community magnetic session is coming up on Oct 16. Our expert speakers will guide participants through interactive sessions, exploring the potential of Altair’s Electromagnetics and Electrification solutions and showcasing real-world applications. In this session, You will learn how SimLab 3D parametric workflow…
