Product quality for noise and vibration (NVH) can only be successfully delivered if you consider it right from the start. Romax Spectrum provides the complete, validated solution for electro-mechanical powertrain NVH simulation.
Providing fast, accurate frequency domain analysis for engineering insight and optimisation, Romax Spectrum’s advanced technical capabilities are proven to work in the real world. Combining advanced capabilities with interfaces to the rest of your CAE eco-system, Romax Spectrum enables a “Right First Time” CAE-led solution for NVH design.
What’s new in Romax 2021?
The 2021 Romax release sees new features across the simulation portfolio, with a particular focus on enabling our customers to democratize advanced technologies and to work in more collaborative ways. The key new features in Romax Spectrum are:
VI-grade NVH simulator export – automatically calculate and export accurate gearbox and electric powertrain noise and vibration predictions from Romax Spectrum for use in the VI-grade NVH simulator.
Electric machine NVH workflow enhancements, including new visualisation tools, and better handling for skewed and eccentric rotors.
Show velocity on housing in Acoustic Analysis – to see the local structural deformations at the same time as the acoustic results and use this to interpret the source of any directional noise.
FE speed improvements – for a significant decrease in model preparation and solve times.
Six degree-of-freedom tooth contact geometry model and multiple nodes for gear mounting – a more complex contact model for improved gearbox transmission error (GBTE) analysis. The 6D model allows users to choose to eliminate assumptions such as force and misalignment only acting in the theoretical plane of action, force and misalignment being fixed throughout the meshing cycle, no impact of system deflections on tooth contact positions.
Improvements to Batch Running and Parametric Study, to enable even more wide-ranging optimisation and sensitivity studies.
Import REXS files, a standardised file format for exchange of geared system CAE models.
Romax Spectrum offers complete, parametric whole-system modelling of the powertrain, incorporating world-class gear and bearing contact models to give the accuracy you need for sensitive NVH simulation.
Validated analysis to predict dynamic gear excitations
New noise environment with reduced masking requires careful NVH design
New powertrain layouts with unknown NVH issues requires a CAE-led approach to NVH
New lightweight, stiff chassis designs make structure-borne noise more important
High rotation speeds leads to higher frequency noise requiring accurate modelling and fast solutions
Greater need to balance NVH with efficiency requiring multi-attribute design optimisation
CAE-led design
Consider designs via NVH simulation early in the development process, minimise NVH testing and prototyping.
System vibration – Frequency domain simulation of system vibration response giving you instant access to the answers you need along with the engineering insight into how to make your design better
Radiated noise – Embedded acoustic solver brings complex simulation to the non-expert with automated calculations to see if your design meets its noise targets
Integrated workflows
Products within the Romax software family enable joined up workflows through interfaces to renowned 3rd party CAE tools, including:
Nastran for FE modelling.
Adams for multibody simulation.
Actran for acoustics.
Motor-CAD, Opera, JMAG and Maxwell for electromagnetic simulation.
VI-grade – vehicle NVH Simulator for sound quality assessment.
Plus, interfaces to many other gear design, multi-physics, CAD, FE and optimisation CAE tools.
“Romax doesn’t just offer Lucid an amazing tool, they offer us outstanding technical and commercial support. We’ve learned a great deal from Romax, and they have been instrumental in helping us to reach our goals for exceptional powertrain NVH performance.”
Lucid Motors
Watch a demo video
What you’ll learn:
How Romax Spectrum can very quickly calculate the excitations coming from the gears
How we can get electric machine excitations from 3rd party tools and bring them into the software
How we can – in just a few minutes – predict both vibration and noise performance
How this analysis in Romax Spectrum allows us to understand in depth why the powertrain behaves as it does, and through the insight that it gives us, allows us to make engineering design decisions that we need to drive a CAE-led development process
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Feature Highlight: Acoustic Analysis
Romax Spectrum Acoustic Analysis adds radiated noise capabilities to the vibration simulation and analysis provided by Romax Spectrum to give you a thorough understanding of NVH performance in electro-mechanical powertrains.
Based on renowned and trusted meshing and solver technology from Free Field Technologies, Romax Spectrum’s Acoustic Analysis product option forms a complete end-to-end process which allows you to predict radiated noise quickly and simply, without any in-depth experience of acoustic simulation. In combination with Romax Spectrum’s vibration prediction and system dynamic analysis tools, you can identify and mitigate the root causes of radiated noise problems in a single software product.
Automatic generation of multibody models that are optimised for the perfect balance of accuracy and simulation speed
Dynamic Fusion is your gateway to the world of multibody and multi-physics simulation. With its unique discretisation technology you can create multibody models from Romax models in just a few seconds, bringing multibody simulation earlier in the design process to run concurrently with your Romax Spectrum NVH analysis.
With translators available for MSC Adams, GT-Suite and Modelica-compliant tools you can easily incorporate your models into simulations for transient dynamics and drivability, systems engineering, control system design and many other applications.
