The electrification revolution has introduced a paradigm shift in the design and research of vehicles. The initial conjecture was that the introduction of electric cars would ultimately diminish the area of NVH analysis. However, on the contrary, it has revealed an unknown and extensive domain in this field. The differences, such as powertrain and packaging, are the most noticeable game-changers. Removal of ICE powertrain comes at the cost of the absence of the masking noise, giving rise to other noise sources. Significant noise contribution has shifted from powertrain noise (ICEV) to road noise (BEV) as shown in figure 1. It is hinted that BEV is not quieter as expected because the road noise increases with speed and now becomes the dominant noise source. The most well-known technique to handle road noise is Transfer Path Analysis (TPA). This technique identifies the critical noise paths on the chassis and car body contributing to the interior noise. This case study presents the prediction of structure-borne road noise by applying a merely new multidisciplinary methodology involving both multi-body and FEM together using a specific tire CDTire model.

DEVELOPMENT OF A MULTI-DISCIPLINARY CAE METHODOLOGY FOR STRUCTURE-BORNE ROAD NOISE PREDICTION

Aqeab Sattar;
2021-01-01

Abstract

The electrification revolution has introduced a paradigm shift in the design and research of vehicles. The initial conjecture was that the introduction of electric cars would ultimately diminish the area of NVH analysis. However, on the contrary, it has revealed an unknown and extensive domain in this field. The differences, such as powertrain and packaging, are the most noticeable game-changers. Removal of ICE powertrain comes at the cost of the absence of the masking noise, giving rise to other noise sources. Significant noise contribution has shifted from powertrain noise (ICEV) to road noise (BEV) as shown in figure 1. It is hinted that BEV is not quieter as expected because the road noise increases with speed and now becomes the dominant noise source. The most well-known technique to handle road noise is Transfer Path Analysis (TPA). This technique identifies the critical noise paths on the chassis and car body contributing to the interior noise. This case study presents the prediction of structure-borne road noise by applying a merely new multidisciplinary methodology involving both multi-body and FEM together using a specific tire CDTire model.
2021
Multi-disciplinary, Structure-borne, CAE, Road Noise, NVH
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11311/1204029
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