Analysis and Optimization of the Vibrational Response of an Automotive Seat: Design Solutions for Improving Comfort and Performance in collaboration with Sabelt S.P.A.

The present thesis project, carried out entirely at Sabelt S.P.A., aims to analyze and improve the vibrational response of an automotive seat, highlighting the parameters that affect its performance in simulated test environments. Sabelt S.P.A., a leader in highperformance seating solutions for the automotive industry, provided technical expertise and laboratory resources, supporting experimental research aimed at enhancing the performance, durability, and comfort of the analyzed seat. The primary objective is to understand the dynamic behavior of the seat subjected to various excitation conditions, with stresses applied by shakers available in Sabelt’s laboratory. The research does not merely involve a simple evaluation of the vibrational response but also aims to identify and propose design or material improvements to reduce the negative effects of vibrations on the structure and enhance occupant comfort. To obtain an accurate assessment of the seat’s dynamic response, excitation signals are applied using a mono-axial shaker, simulating real-use conditions in the anechoic chamber in the Sabelt’s laboratory by controlling the intensity of the excitation. The experimental analysis is enriched by data processing and frequency analysis tools, which allow the detection of any resonances or critical points where the seat structure shows increased vulnerability. This analysis is essential to identify structural characteristics that may require optimization. This thesis represents a contribution to developing an effective response to external stresses on a seat. The work carried out demonstrates the importance of ensuring that automotive seats maintain a high-quality standard and meet consumer demands for comfort while ensuring safety.