Method for mapping the interactive stiffness behavior of coupled meshes and double helical gears

 

Starting Situation

Steadily rising performance requirements are creating a growing need for optimization in drive technology. The gear wheel as a power-transmitting component in the transmission is of great importance. Optimized gear designs can contribute to saving weight, installation space and costs in the design and manufacture of multi-stage gear units and turbo gear units. At the same time, efficiency can be increased and low-noise operation guaranteed. In multi-stage gear units, parallel tooth meshing occurs on a shaft and influences each other. The same applies to the double helical gears used in turbo transmissions. The two meshes of the double helical gearing can also be interpreted as parallel meshes. In order to exploit the full potential of parallel meshing in multi-stage gearboxes and double helical gears, methods are required which allow a stiffness-faithful representation of the entire gear chain in the FE-based tooth contact analysis and thus an optimized design of the gear geometry with regard to the application behavior under consideration of the interactions.

Research Objective

The aim of the project is the development of a method for the exact mapping of the operational behaviour of coupled meshing and double helical gearing with the flexible FE approach and the derivation of design guidelines for coupled meshing. The method shall be developed with the program STIRAK. The participating research units are the WZL and the CAD in Bayreuth. The extension is intended to improve a precise analysis of the operational behaviour of several interventions, taking into account the mutual influence in the design process.