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Roooh, I didn't export the optistruct file to check… shame on me…

Ok, I will check it is has worked well with my test file.

Thanks for your help!

@bragapedro

Your license key has been deactivated in Altair One, and you can now reactivate your student license using the same key.

Kindly note, The Altair Free Student Edition license is valid for use on only one device, it cannot be shared or activated on multiple machines at the same time AND Deactivation and reactivation feature is only if a computer breaks down or reformatted and is only allowed a few times per user preprogrammed into the system.

You can deactivate the license from one machine and reactivate in another by yourself if you have access to both machines as per –
https://community.altair.com/discussion/34280/altair-student-edition-deactivate-from-one-computer-to-activate-in-another-in-the-rare-case-a-computer-is-lost-or-malfunctional#latest

Thanks

Hi Louis,

Yes, that is exactly what I mean. In the analysis setup window, the solver you select before running (click on file > preference> Under Inspire run option and you can select the alaysis solver and choose) the simulation determines whether the model is solved using OptiStruct or SimSolid. If you selected OptiStruct, the analysis used the traditional finite element solver, whereas selecting SimSolid used the meshless SimSolid solver. Your test with a simple model containing pretensioned fasteners is consistent with expected behavior, since both OptiStruct and SimSolid support bolt pretension effects and can account for preload in the structural response, even though they handle the underlying calculations differently.

Regards,

Sourav

@CHRISTCHAGOU

Your license key has been deactivated in Altair One, and you can now reactivate your student license using the same key.

Kindly note, The Altair Free Student Edition license is valid for use on only one device, it cannot be shared or activated on multiple machines at the same time AND Deactivation and reactivation feature is only if a computer breaks down or reformatted and is only allowed a few times per user preprogrammed into the system.

You can deactivate the license from one machine and reactivate in another by yourself if you have access to both machines as per –
https://community.altair.com/discussion/34280/altair-student-edition-deactivate-from-one-computer-to-activate-in-another-in-the-rare-case-a-computer-is-lost-or-malfunctional#latest

Thanks

Studio needs 175 ENT units (enterprise) per deployment. . It doesn't depend on cores or anything, just one installation that number of units.

You would also Lakehouse. Lakehouse consumes 6 ENT units per core.

See here for a sizing guideline ( https://2025.help.altair.com/2025.0/graphstudio/userdoc/anzograph-sizing.htm ), although the sizing is mostly dependent on memory, rather than cpus.

Sizing Guidelines for In-Memory Storage

@bernardokp Hi,

Thanks for choosing to use AI Studio (previously known as Rapidminer studio) and apologies for any inconvenience caused,

AI Studio can be accessed in two ways - through Altair’s Student Edition using Altair Licensing or through RapidMiner Licensing.
For a detailed information on the two licensing paths, along with FAQs, please see - https://community.altair.com/discussion/63485/ai-studio-rapidminer-studio-for-student-use-faq-students-please-start-here#latest

We recommend utilizing the Altair One Student Edition to access AI Studio. Steps to access the Altair Student Edition Bundle : -

1. Register on Altair one (https://admin.altairone.com/register) using your official university email ID (e.g., yourname@youruniversity.edu).
2. Follow the detailed instructions provided here -
   https://community.altair.com/discussion/34207/instructions-to-access-the-free-altair-student-edition-now-in-altair-one

If you or your students have previously accessed AI Studio via RapidMiner.com, you may need to switch to Altair Licensing. This instructional video series covers information on how to use the free Altair student license from Altair one to activate AI Studio and related troubleshooting - https://youtube.com/playlist?list=PLQ7KUGFuVz4tr84PxSQojTu-RTDsznSJf&si=T_E6c0mRUknm8oJ7

If your students have any questions, they can post in the Altair community forum (https://community.altair.com) using their Altair One account and will be happy to help.

Thanks

Hi!

Great question. AI Studio and Hub aren't designed to work with branches.

You can, however, use the git command line like you described or a graphical Git client to create local branches. You can add these as normal local repositories in your Studio and work in them. When you're done, you merge your changes into the main branch, commit and push them.

You can find a demonstration of Git version control in Notebooks in this Academy video:

https://academy.rapidminer.com/learn/video/creating-and-version-control

Best regards,

Balázs

Hi Louis,

Right click on the fastner and select new pretention group. The pretension functionality has not been removed in Inspire 2025.1, but its visibility is now more dependent on the active analysis setup and solver configuration. In previous versions, the pretension field was directly exposed in the Fastener Property Editor, whereas in 2025.1 it may only appear for supported study types. Could you please verify that the study is an OptiStruct static/linear analysis and that the model is not running in SimSolid mode? It is also worth fully expanding the Property Editor after selecting the fastener and checking whether pretension needs to be defined through a Pretension load/group in the Loads ribbon first. Since pretension is not supported for all analysis types, the option can be hidden depending on the current setup. If the option is still unavailable after these checks, please share a simple sample model and the study type so we can investigate further.

In a linear static load case you must assign pretension to a single pretension group, select the fasteners it applies to and enter the force. You can choose “Simultaneous” to load all fasteners at once and tick “Preload Result” if you want results showing only the pretension effects.

Known limitations:• OptiStruct frequency analyses with pretension are not supported.• SimSolid sequential loading with pretension is not supported.

Regards,

Sourav

Hi Mintu,

For random vibration and fatigue analysis in steels such as SS304, von Mises stress is generally the preferred criterion because steels are ductile materials, and their failure behavior is governed more by distortion energy than by maximum normal stress. The confusion usually comes from the fact that many papers report both von Mises and principal stresses for different purposes. In static analysis, von Mises stress is compared against yield strength for ductile materials, while principal stress is more suitable for brittle materials where failure occurs due to tensile cracking. In fatigue problems, however, the goal is not simply to check yielding but to evaluate how cyclic stresses accumulate damage over time. For ductile metals under multiaxial cyclic loading, fatigue calculations are commonly based on an equivalent stress measure derived from von Mises stress and then compared against fatigue properties such as the endurance limit or S-N curve rather than yield strength. Principal stresses may still be useful for studying crack initiation direction, weld fatigue, or brittle behavior, but for general random vibration fatigue analysis of steel components, von Mises-based equivalent stress is the standard and most appropriate choice for both stress evaluation and damage calculations.

Regards,

Sourav

Hi, unfortunately the coupling interface is disabled for the student license, so it's not possible to couple with a FEA program.

However you could still export force data from EDEM in .csv format and import that to a FEA solver. For example this case with HyperMEsh doesn't require a coupling, jsut exporting data from a solved EDEM case:

https://community.sw.siemens.com/s/article/39728-edem-hypermesh-tutorial-export-edem-data-for-fea-analysis-of-dump-truck

Regards

Stephen