Tire/road noise has emerged as a significant factor in vehicle noise performance as a result of electrification. In the noise and vibration domain, the industry places great emphasis on capturing the realistic dynamic behavior of substructures. The dynamics of tires are particularly susceptible to variations arising from operational conditions like preload, inflation, and rotational speed. Siemens Digital Industries Software currently provides a lightweight solution combining test and simulation-based approaches for capturing the structure-borne noise of non-rolling tires. The proposed model is a finite element model that expresses the static tire dynamics in the frequency domain and as such fits for efficient integration in full-vehicle models. Experimental modal analysis and frequency response function (FRF) tests are used to validate the proper dynamic behavior in static conditions. In this chapter, the model has been extended with gyroscopic features to include rotational effects in an efficient frequency-domain approach. An advantage with respect to the standard time-domain simulation for rolling tire dynamics is the reduction of the computational effort needed by our method. This approach is validated against experimental results measured via an innovative impact testing technique, allowing the isolation of pure rotational effects from the ones caused by preload deformation.

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Efficient Frequency-Based Modeling of Rotating Tire Dynamics for NVH Applications

  • Domenico Minervini,
  • Marc Brughmans,
  • Claudio Myrtaj,
  • Theo Geluk

摘要

Tire/road noise has emerged as a significant factor in vehicle noise performance as a result of electrification. In the noise and vibration domain, the industry places great emphasis on capturing the realistic dynamic behavior of substructures. The dynamics of tires are particularly susceptible to variations arising from operational conditions like preload, inflation, and rotational speed. Siemens Digital Industries Software currently provides a lightweight solution combining test and simulation-based approaches for capturing the structure-borne noise of non-rolling tires. The proposed model is a finite element model that expresses the static tire dynamics in the frequency domain and as such fits for efficient integration in full-vehicle models. Experimental modal analysis and frequency response function (FRF) tests are used to validate the proper dynamic behavior in static conditions. In this chapter, the model has been extended with gyroscopic features to include rotational effects in an efficient frequency-domain approach. An advantage with respect to the standard time-domain simulation for rolling tire dynamics is the reduction of the computational effort needed by our method. This approach is validated against experimental results measured via an innovative impact testing technique, allowing the isolation of pure rotational effects from the ones caused by preload deformation.