About Hvtrans
Altair EmployeeIntroduction
Hvtrans is a utility available in HyperWorks Desktop package, which allows to convert any solver native format support into h3d format.
As a starting point, let’s review the motivations to convert native data in h3d:
- File size: Conversion helps to reduce significantly native solver output files (especially Nastran op2, Ansys rst, LS Dyna d3plot and Radioss animation files).
Hvtrans also allows to select data types of interest, allowing extra file size reduction.
- Performances: Large result files (> 1Gb) from uncompressed formats may affect HyperView performances (load model, plot contours, envelopes, latency for rotation, …). h3d is the native h3d format then it is optimized for use in HyperView.
- Combination of multiple output files. Hvtrans can be used to merge together multiple output files into a single result files. Envelopes and/or linear superpositions can even be generated from Hvtrans
- Entry point for Physics AI. In our current version, PhysicsAI supports only h3d as result file format. Hvtrans is then the shortest way to convert results from other simulations in h3d. If source format is not recognized by Hvtrans, then use of Altair Compose is recommended:
First steps with Hvtrans:
Hvtrans can be used either in interactive mode, or batch mode. Let’s start with a tour of HvTrans interactive mode:
HvTrans can also be run in batch mode:
Going further with configuration files:
Configuration files can help with different cases:
- Create derived loadcases
- Combine several result files together
About Radioss and Hvtrans:
Radioss offers a native format called animation files (A001, A002, …). These files are controlled by /ANIM/… keywords in Engine file (_0001.rad). If you run Radioss jobs from Compute Console, Hvtrans is run automatically at the end of the simulation to convert the animations into a single h3d file.
If you run Radioss jobs from a cluster, you need to make sure to:
- Install both HyperWorks Mechanical Solvers and HyperWorks Desktop packages
- Execute Radioss with /altair_dir/altair/scripts/radioss script
Please note that from version 2019, we have implemented native h3d format in Radioss. This is controlled by /H3D/… keywords in the engine file (_0001.rad), and it does not require anymore hvtrans.
Please feel free to review the article below for more precisions about Radioss animations and H3D format:
ANIM or H3D: Which output should I use in my Radioss simulations? — Altair Community
Comments
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Hello, could HVTrans help with Autoform output formats to create H3Ds for physicsAI?
Thanks.
Alexander
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Hello @AHuels ,
Hvtrans share the same readers than HyperView. I just looked at HyperView but did not see any Autoform extension in the supported ones.
Option #2 would be to rely on ASCII results from Autoform and to use Altair Compose to read the ASCII data and write a h3d file. Is autoform roposing an ASCII export?
best Regards,
Michael
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Hello Michael.
I am not the key user of Autoform. I have a simple example.Native format is .afd. But it could export Results in csv and DYNA .dyn and PAM .m01. Nodes are included.
All of those 3 version are via Nodepad++ readable.Are there ready-to-use scripts available? Compose would be also something new for me, or are there any simple script which could be modified?
Kind regards,
Alexander0 -
hello @AHuels ,
we have some demo Compose scripts in Community:
In this link, we show how to append to an existing file. If you do not want to append, then you just have to ignore the lines regarding the opening of an existing h3d file.
Regards,
Michael
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Hi @AHuels,
We have a few customers using Autoform results as datasets in PhysicsAI by converting them to the LS-DYNA format.
I infer that this would be the most straight-forward way of using PhysicsAI on Autoform results.
Note: For timely response, it is recommended to mail the query on hwsupport@altair.com.
Many thanks.
Kind Regards
Garima Singh
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