Altair Community

Ask Questions, share insights and find resources to take full advantage of Altair products. Join our community of more than 1.3 million users.

Site Totals

57509 Discussions45967 Questions145470 Comments

Hello and Welcome!

There's a wealth of content waiting for you to explore! Need support or have a question? Login or join our community.

Discover the Community

Getting Started
Everything you need to know to get started on the Altair Community.
Discussions
Ask questions, browse technical discussions of commonly occurring problems or view announcements.
Regional Discussions
A space to store language specific content. Currently, we have Japanese and Korean categories available.
Academic
A space for academic related technical resources and discussions.
Altair Exchange
A space to share your Altair scripts, models, workspaces and extensions with the community.

View all Categories

Upcoming Events

Ask the Expert Monarch Series
Dedicated to Altair Monarch Users - Monthly Interactive Series At Altair, your success is our #1 priority, and we’re here to help you get more out of your Altair Monarch & Monarch Server solutions. Ask the Expert is hosted every 3rd Tuesday of the month; otherwise, notification of date changes is provided in advance. A…
Altair Community Magnetics Chat Series 2025
Join us for an exciting technical series where we will showcase the new capabilities of High Frequency and Low Frequency tools in Altair. This monthly series is designed to empower industry experts by providing them with insights into the latest features, workflows, and advancements in Altair’s Electromagnetics solutions.…
Altair HyperMesh - Introduction to New Interface and Technology Monthly Series
Each of the sessions has the same content and is meant to give an overview over new tools and technologies in HyperMesh as well as a practical introduction to the user interface. Sessions occur every second Thursday of each month from 9 AM to 12 PM CET, including a 15-minute break. Registration is now open for the…
ATCx AI for Engineers 2025
Everything Solvable | Ask Anything, Solve Everything AI’s not coming for your seat – it’s clearing the desk. It’s turning the tedious into automated and the complex into possible. In design, manufacturing, and business strategy, it’s giving engineers the space to think bigger. At Altair, we see AI as a force multiplier,…
Honolulu, HI - 1 Day Altair Monarch Training Workshop
For those who live and work in the Oahu area, please join us for a 1 day training workshop on Wednesday, August 20th , in Honolulu, HI . It will be a great opportunity to see what's new in the product and learn about Altair’s continued innovation to optimize your Data Analytics lifecycles. To RSVP, kindly click the "I am…

View All

🎉Community Raffle - Win $25

An exclusive raffle opportunity for active members like you! Complete your profile, answer questions and get your first accepted badge to enter the raffle.

Join and Win

Recent Feed

How to output force of a User Subroutine Bushing (difined by GFOSUB)?
Hello everyone, I difined a Bushing with user subroutine GFOSUB in Python, the input is Bushing velocity and displacement and returns six-point force, like: def GFOSUB(id, time, par, npar, dflag, iflag): … return [FX, FY, FZ, MX, MY, MZ] The simulation performed correctly, but the output of Bushing force is zero. As shown…
How can I convert section of 3D mesh to 2D mesh?
Hello everyone, I have a difficulty to convert section of 3D mesh into 2D mesh. Let me explain my situation. I have a 3D tetrahedral-meshed model and I'm performing analysis on specific section. But since I have many DOE, I often need to modify the mesh. I think It is more easier to performing analysis using a 2D…
Acusolve not configured
Description: Acusolve environment not configured Product/Topic Name : I am using Altair Simlab, and when i am trying to run simulation.. It appears saying Acusolve environment not configured. *Note from Community Team - Once you receive a satisfactory answer on your question, kindly mark your answers as "Accepted" so it…
How do I condition the end of a simple cantilever beam.
I have a simple cantilever C-Beam with a 1-D 16-element mesh, meaning there are only 17 nodes. At node 1, I have defined a constraint in all DOFs, expecting that to be a cantilever condition. At each node, I have added a force vector and have a force step defined to do a strain relief and a modal analysis. I run the model…
No Results / Solver Log Shown in SimLab 2024.1 (EDEM Coupling)
Hi all! My problem is as follows. I am trying to run the ACU-T:6102 Windshifter tutorial that couples EDEM with SimLab. I have AcuSolve, SimLab, and EDEM all version 2024.1. Whenever I follow the tutorial steps and right-click Results under Coupled Solution in EDEM to Update Results, instead of an orange result button,…
Variable Cohesion Model
Hi all, I am currently working on my own API plugin. Basically, I expand the VariableCohesion API provided for EDEM2024.1 I want particles inside my simulation to start becoming more sticky, based on there residence time. My idea was that for every contact, it is checked if one of the particles residence time is above a…
motionview soft soil modeling
Hi everyone, I am having some problems with soft ground vehicle simulation using motionview2024, I followed the tutorial guidelines for soft ground modelling and used the crg file to write the terrain, but I got an error when loading the file, then I tested it using the crg file in the file repository, but there was no…
Using Compose to write scripts for Simlab
Hello, I am trying to run a script for Simlab using the Python IDE in Compose. I run into issues with the very first line of code where I call: from hwx import simlab I get an error in the Python window of Compose: ImportError: cannot import name 'simlab' from 'hwx' (C:\Program…
DOE using LS Dyna solver
Description: I am working on setting up DOE using LS dyna interface in hypermesh, and wanted to solve using the LS dyna solver. However, I am not able to access to that particular solver Product/Topic Name : Hypermesh 25/ DOE
Hyperstudy Physics AI surrogate model
How Can I run a hyperstudy structural sim for multiple martials (from list) multiple thickness (from list)., using a model trained with material and thickness labels

Unanswered Questions

Acusolve not configured
Description: Acusolve environment not configured Product/Topic Name : I am using Altair Simlab, and when i am trying to run simulation.. It appears saying Acusolve environment not configured. *Note from Community Team - Once you receive a satisfactory answer on your question, kindly mark your answers as "Accepted" so it…
How do I condition the end of a simple cantilever beam.
I have a simple cantilever C-Beam with a 1-D 16-element mesh, meaning there are only 17 nodes. At node 1, I have defined a constraint in all DOFs, expecting that to be a cantilever condition. At each node, I have added a force vector and have a force step defined to do a strain relief and a modal analysis. I run the model…
Using Compose to write scripts for Simlab
Hello, I am trying to run a script for Simlab using the Python IDE in Compose. I run into issues with the very first line of code where I call: from hwx import simlab I get an error in the Python window of Compose: ImportError: cannot import name 'simlab' from 'hwx' (C:\Program…
Inspire personal 2024.1 license error
I have been facing issues with the optistruct license in altair inspire. Whenever I try to run a topology optimization I get an error saying that I do not have a valid license. I have already tried fully uninstalling the program but the error still persists, I have also tried the suggested solutions but none worked.
Verification of boundary edges aborted - Remeshing of mech. set impossible on current time step
Hi all, I'm currently working on static eccentricity in my motor design, but in trying solve the model, I'm encountering an issue that isn't immediately obvious to me and would appreciate your input. The problem seems to be related to the air gap, as flagged by the software. I’ve structured the air gap into three regions:…
Performance Metrics
Hello Does anyone in the community have any idea how to generate 'custom performance metrics' in RapidMiner? I'd be grateful to know. The list of metrics ("recall", "accuracy","F1 Score", etc) does not include "Balanced Accuracy" or "Balanced Error Rate". Yes, I can manually calculate these, but there must be some simple…
OPTISTRUCT : why the results are different if using different number of CPU cores？
Hello, I am doing the frequency response analysis of a chassis structure. I found the result will be different I choose different number of CPU cores. I calculate the same FEM file by adding -nt 2 or -nt 8. The pictrue is the result of displacement response result. I can't attach the FEM file, but I am sure I was using the…
in altair flux motor, i want run motor for specific torque at specific rpm for 5 min. can i do this
Let me know how to go ahead for this question.
How does input 'locj'/'loci' works in User Subroutine like 'cnfsub'?
Hello Everyone In MotionSolve Reference Guide, the CNFSUB has a attribute names 'LOCI', and is descriped as follows: LOCI [double precision]: An array that contains the position vector of the contact point on I_GRAPHICS_ID with respect to the origin of the I_GRAPHICS_ID reference marker, resolved in the I_GRAPHICS_ID…
Use Batchmesh with python api in Hypermesh
While using Batchmesh in python, it shows a error of 'Input has inconsistent entity type'. Providing it the proper format parameters still shows the error.

Announcements

🎉 June Community Raffle - Win $25!
Complete your Profile, Get Your First Accepted Answer Badge & Enter to Win! We're celebrating our amazing Altair Community with an exclusive raffle opportunity for active members like you! How to Enter the $25 Raffle Step 1: Earn your first accepted answer badge by answering community questions and getting your answers…
Altair Community May 2025 Roundup + How to enter our $25 Raffle 🎉
Hello Community Members! Welcome to our May Community Roundup! As we wrapped up a beautiful May and moved in to June, I am excited to share highlights from our buzzing Altair Community. Before we dive in to May's achievement, don't forget to participate in our exciting June Community Raffle - Complete your Profile, Get…
Community Champion of the Month - May, 2025
The Community Team would like to introduce the May Champion of the Month, Simone Reitano @Simone_Reitano. Simone is an Aerospace Engineer, graduated from Politecnico di Torino in 2019. After an initial experience as a Fellow Researcher, he joined BEOND, an innovative SME providing advanced engineering services, including…
Community Quick Tour
Watch a Quick Tour video for a guided experience to understand and navigate the site's features and functionality.

Monthly Community Champion

Exceptional individuals who support the Community.

Community Champion of the Month - May, 2025
The Community Team would like to introduce the May Champion of the Month, Simone Reitano @Simone_Reitano. Simone is an Aerospace Engineer, graduated from Politecnico di Torino in 2019. After an initial experience as a Fellow Researcher, he joined BEOND, an innovative SME providing advanced engineering services, including…

Quick Links

Popular Tags

Featured Posts

Accessing Altair Learning Center
The Altair Support page provides users with access to the Altair Learning Center page, which can be reached either directly through or by logging into the: Altair One or Altair Community Users in Altair Learning Center have access to four different sections: In the Explore Content section, users can refine their search…
Community Champion of the Month - May, 2025
The Community Team would like to introduce the May Champion of the Month, Simone Reitano @Simone_Reitano. Simone is an Aerospace Engineer, graduated from Politecnico di Torino in 2019. After an initial experience as a Fellow Researcher, he joined BEOND, an innovative SME providing advanced engineering services, including…
🎉 June Community Raffle - Win $25!
Complete your Profile, Get Your First Accepted Answer Badge & Enter to Win! We're celebrating our amazing Altair Community with an exclusive raffle opportunity for active members like you! How to Enter the $25 Raffle Step 1: Earn your first accepted answer badge by answering community questions and getting your answers…
Community Quick Tour
Watch a Quick Tour video for a guided experience to understand and navigate the site's features and functionality.
Upcoming Altair Community Events for June - Join Us!
Our community events calendar is packed with opportunities to learn, connect and grow. From technical deep-dives to networking sessions, these events are designed to strengthen our community connections. Take a look at our June events lineup. Summary of our Upcoming Events: Ask the Expert AI Studio Series [June 11] -…
Altair Community May 2025 Roundup + How to enter our $25 Raffle 🎉
Hello Community Members! Welcome to our May Community Roundup! As we wrapped up a beautiful May and moved in to June, I am excited to share highlights from our buzzing Altair Community. Before we dive in to May's achievement, don't forget to participate in our exciting June Community Raffle - Complete your Profile, Get…

Monthly Leaderboard

This month's community leaders

SaravananKarthikeyan 20