Romax Energy

Rapid design

Build parametric models of any full drive system rapidly (in minutes), with an easy-to-use drag-and-drop 2D modelling interface and a live reflection of the model in 3D visualisation. Models (starting with basic shaft, gear, bearing arrangements) can be created from scratch, imported from other Romax products, from CAD geometry, or via a number of other interfaces such as REXS.

Romax offers multi-fidelity component models across the full system:

• Model helical, spur and planetary gears as loading (ratio only), concept (teeth/module defined), detailed (macro/micro geometry)
• Model bearings initially as linear stiffnesses, then select from comprehensive bearing catalogs or design a custom bearing
• Import/create and condense FE components (or import from FEA), and model flexible FE bearings and gear blanks

Models can then be converted to MBD, CAD, CFD and other formats to save time on data re-entry.

Combining state-of-the-art gear and bearing contact models with the latest standards and stress-based life calculations, Romax offers fast, proven prediction of component performance and full-system structural deformations. Romax’s holistic approach to system simulation considers the cumulative effect of the complex interactions between all components:

• Shaft deflections
• Gear misalignments and shifting contacts
• Housing flexibility
• Non-linear, load-dependent bearing stiffness
• Component stresses and loads

Analyses are appropriate to model fidelity, ranging from fast approximations when evaluating design concepts to more detailed analyses during virtual testing and design for manufacture. Thanks to its hybrid approach of FE, analytical and empirical methods, Romax is able to provide this analysis very quickly. The most computationally-efficient and accurate method is used for each part, and combined into a fully-coupled system simulation that provides the optimal blend of speed and accuracy, specifically designed for powertrain simulation.

Comprehensive efficiency models calculate transmission efficiency and emissions so you can design highly efficient transmissions. Romax Energy allows you to:

• Create system efficiency maps and calculate energy losses, equivalent fuel consumption and CO2 emissions, or EV energy consumption
• Conduct advanced efficiency analysis using standard methods and industry-leading proprietary loss models that account for detailed bearing, gear and lubricant parameters
• Analyse losses at a component level to find the most lossy components and redesign the system to optimise for efficiency
• Perform quick parametric studies to investigate the impact of different gear, bearing and lubricant designs on system efficiency
• Select from a built-in lubricant database, customise lubricants, or create your own and specify individual component lubricant properties

A quick and easy-to-use interface from Romax Energy to Particleworks helps you conduct CFD simulations early in your design process. Optimise for sustainability, promote CAE-led design and enable informed engineering decisions to be made earlier, shortening development timescales and reducing the need for testing.

• Export a fully valid model from Romax that will run on Particleworks with little CFD expertise required, using the default parameters set through best engineering practises
• Study variations of different parameters such as fill height, temperature and speed and the resulting impact on fluid distribution and churning loss
• Understand system lubrication performance under extreme conditions (hill starts, cornering, etc.)
• Obtain more accurate, high-fidelity churning loss for critical operating conditions to understand and improve system efficiency
• Use results to redesign the system to ensure proper lubrication while minimising churning loss