2nd ICAI 2022

International Conference on Automotive Industry 2022

Mladá Boleslav, Czech Republic

show individual sensitivities to the given parameters and their level settings. The best combination of micro-geometry is shown in Figure 6.

Figure 6: The best result of the micro-geometry

Source: own elaboration (2019), reference paper [2]

Figure 7: Results for detailed parameters

Source: own elaboration (2019), reference paper [2]

3. NVH and acoustic prediction The knowledge of the housing’s modal shapes, including the harmonic response excitation, is a vital part of a comprehensive solution to reduce the noise emission of the gearbox. Calculations of mode shapes, including the response to frequency excitation from gearing, used to be calculated, until recently, in the MSC Nastran software. However, the calculations performed with this software, could not help us to optimize the stiffness of the housing with respect to the distribution of mode shapes in the speed range of the gearbox. It is not possible to use these calculations results for further calculation of noise emission. For these reasons, we have started co-working with Hexagon, which offers software that includes a comprehensive solution with an

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