Romax Designer 24.1
Hexagon is proud to announce the availability of Romax DT 2024.1, released as part of the full Romax software suite.
The following article contains some overview information about the new features in Romax DT.
Customers can get more information on these features on the Nexus Documentation Center here.
If required, please see this article for full instructions on how to gain access to this information on the Nexus Documentation Center.
An on-demand webinar What's New in Romax 2024.1  is also available, where Kris Kouumdjieff, Product Manager – Romax, explains some of the highlights from the 2024.1 release of the Romax software suite.

Please click the below image to access the webinar.

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Romax Spectrum
Advanced JMAG-Designer Interface for eNVH Optimisation
The drive towards zero prototypes calls for CAE solutions that not only give accurate predictions, but which also support variability analysis and rapid what-if studies. In the field of electric powertrains, it is noise and vibration that has proved to benefit particularly from a simulation-led design approach.

To allow easy optimisation of electric powertrain noise and vibration, the ability to perform automated studies of the combined effects of both motor and gearbox design changes is needed. Therefore, this release of Romax Spectrum introduces a new feature, the “JMAG Force Automator,” which allows the modification of electric machine parameters and the generation of excitations from a JMAG Designer analysis to be controlled from within Romax DT. This enhancement allows workflow automation, parametric studies and optimisations to be performed with ease.

This development also eliminates the need to export and import files manually, making the process more efficient and less error prone.

    Model parameters can be tweaked to easily compare NVH performance
    Excitations can be generated within the parametric study and batch running
    New actions and targets were added to parametric study and batch running to see the effect on excitations
    Metadata is added when importing excitation data from any source

A colorful arrow pointing to a machine Description automatically generated with medium confidence
Improved Handling of Large Models for Dynamic Simulations and Export
This development addresses two issues faced by users running dynamic analysis on large models

    Memory issues caused by larger numbers of degrees of freedom in dynamic models (typically when running models with large numbers of condensation nodes such as electric powertrains with skewed rotors)
    Extended simulation time when dynamic models are exported caused by the need to run the dynamic analysis more than once during an export operation (e.g. Nastran or Optistruct substructure export, VI-grade export or Acoustic analysis)

Improved memory management has fixed these issues by making use of file streaming and caching, reducing the amount of data held in memory and avoiding unnecessarily repeated dynamic analyses.
There are no changes to how the user interacts with the software and there are no changes to results caused by this development.

NOTE: This feature was initially made available to users of 2023.1 via an update (240212) in February 2024. This is the first major release to include this feature.

Actran Export: Compatibility with Actran 2024.2
Romax Acoustic Analysis includes the Actran Export feature to pre-process and export a set of files for further analysis using Actran. Changes to the file format specifications for Actran in the Actran 2024.2 release means that the files exported by Romax versions 2023.1 and earlier will not be compatible with Actran version 2024.2. This new feature allows users of Romax 2024.1 to choose whether to export files that are compatible with Actran 2024.1 (and earlier) or Actran 2024.2.

    For users of Romax version 2023.1 who want to use Actran version 2024.2, an update to Romax 2023.1 which includes this feature will be released in a future update.
    Until this update is released users of Romax 2023.1 will have to manually edit the Actran files.
    Romax versions earlier than 2023.1 will not be compatible with Actran 2024.2 and the Actran files will have to be edited manually.

 
Romax Enduro
Cylindrical Gears – ISO1328-1:2013 Gear Accuracy Specification
Gear accuracy is a measure of manufactured gear quality and affects durability, noise & efficiency. Higher quality gears will give improved performance, but cost more to produce, have longer manufacturing times and potentially higher scrap rates
This development adds the ability to specify cylindrical gear accuracy according to ISO 1328-1:2013 to complement the older implementation of ISO 1328-1:1995. This is an important enhancement as the latest ISO 6336:2019 rating used by Romax Enduro to assess gear durability is not compatible with the older version of ISO 1328.

    Ability to specify different quality parameters/grades for each gear
    Specification of individual grades or individual deviations
    Ability to approximately compare different quality standards
    Addition of quality specifications as variables in Parametric Study and Batch Running
    Estimation of grades when specifying deviations and helpful messages guiding the user

Note that because all the quality standards work slightly differently, setting individual parameters and comparing between standards is an approximation. In a lot of cases, this can cause non-compliance with the standard. However, Romax users have to deal with these situations frequently, so this development is designed to be flexible and transparent to the user. Colour coding and helpful messages make it clearer to the user. It is the responsibility of the user to check if the results are suitable for their specific requirements.