driveline gearboxes

The developer will not include self-directed tutorials with the software, but the company really does provide user training directly. The trainers customize program content and duration to meet the needs of each organization. A one-week training session would be adequate to cover the essential modules and a few advanced topics. Many highly specialized software packages require constant use to be and stay proficient. I discover that RomaxDesigner does not require this level of attention. Engineers with other responsibilities will see this software functional also if not applied to a regular basis.

For parallel and perpendicular-axis gears, modules provide interfaces to more detailed analysis software, such as Simpack, LDP, and AnSol. They become a “front side end” for actually more-computationally intensive formulations of bending and contact stress. The combination of the software packages is particularly powerful, since it permits cumulative damage-life analysis including the nonlinear effects of gear-tooth deflection and bearing stiffness, acting on a fully developed tooth profile. Additional modules concentrate on NVH and dynamic characteristics, such as gear rattle and whine, system modal evaluation, and clutch evaluation. Modules are also open to automate optimization and for the sensitivity analysis of system and element designs.

RomaxDesigner models can include spur and helical gears, and with the perpendicular-axis module, bevel and hypoid gears. The base software models gears with enough detail to analyze their effects on the rest of the system. Extra modules allow design and ranking to AGMA, DIN and ISO specifications. For parallel-axis gears, additional modules permit macrogeometry definition and optimization for manufacturability as well as detailed evaluation of microgeometry for contact stress and transmission error. RomaxDesigner graphics are ideal for a variety of reporting illustrations, such as system topology and component deflection.

Bearing models provide non-linear stiffness interactions with adjacent components, which can be critical when calculating gear-support stiffness, gear-mesh misalignments and preload requirements. When calculating bearing life, the models are the results of misalignments created through the versatility of any coupled elements. A bearing preload tool automates studies of bearing life because a function of preload. These features have been proposed for another release.
Advanced bearing-analysis modules provide detailed analyses (ISO 281 Health supplement 4), including contact tension, fluid-film thickness, and stress-based lifestyle calculation. Advanced bearings could be defined with an assortment of predefined roller and raceway crowns, or with a measured crown.

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