# Research on Propagation Characteristics of Tire Cavity Resonance Noise in the Automobile Suspension
###### Abstract  
Tire cavity resonance noise (TCRN) is one of main contributors to vehicle interior noise, which has long been a concern in the automotive industry and academia. As suspension is crucial for the propagation of TCRN energy into the vehicle, the propagation characteristics of energy in automobile suspension is studied in this research. Firstly, the finite element model of a [PERSON] suspension system connected to an aluminum alloy wheel with a Y-shaped spoke was established. Then, a modal analysis and response calculations of the [PERSON] suspension system connected to the aluminum alloy wheel with a Y-shaped spoke were carried out. Finally, the propagation characteristics of TCRN in the [PERSON] suspension system connected to the aluminum alloy wheel with a Y-shaped spoke were studied and analyzed by the power flow method under different working conditions. The power flow output via the lower arm front bushing was the largest, while the output via the rear bushing was the smallest in the Y-spoke aluminum alloy wheel and suspension system. The areas in the suspension system with high stress are located at the steering knuckle, lower swing arm, and shock absorber. Therefore, study of the propagation characteristics can provide a basis for a McPherson suspension system design.  
title: **Citation:** [PERSON], [PERSON], [PERSON], [PERSON], T. Research on Propagation Characteristics of Tire Cavity  
Resonance Noise in the Automobile  
Supression. _Appl. Sci._**2023**, 13, 12113. [[https://doi.org/10.3309/app13221213](https://doi.org/10.3309/app13221213)]([https://doi.org/10.3309/app13221213](https://doi.org/10.3309/app13221213))  
Academic Editor  
substitute it into the elastic foundation admittance [11]. The power flow of the structural sound intensity method was introduced to study the propagation law of vibration energy in a thin-walled rectangular beam, and the difference in power flow at response points before and after applying a concentrated mass was examined [12]. Based on our power flow analysis, a power flow vibration and shock-fusion controller was proposed. This fusion controller covered the vibration control module that attenuated vibration excitation and the shock control module that buffered shock excitation and vibration [13]. The theory of vibration power flow was used to optimize the selection of the damping element bushing. The dynamic response of the system before and after parameter optimization and the influence of the bushing parameters on the power transmission were discussed in ref. [14].  
The above works show that the power flow method has wide and mature applications in many fields, but so far, it has not been applied to research on the propagation characteristics of TCRN in a McPherson suspension system connected to an aluminum alloy wheel. Therefore, we applied the power flow method to research the propagation characteristics of TCRN in a McPherson suspension system connected to an aluminum alloy wheel. The laws of propagation characteristics of TCRN in a McPherson suspension system under different working conditions (loads, inflation pressures, or speeds) can provide the necessary basis for the design of a McPherson suspension system.  
To this end, a finite element model of a McPherson suspension system connected to an aluminum alloy wheel was established, and modal analyses and response calculations of the McPherson suspension system were carried out. Finally, the power flow method was used to research the propagation characteristics of TCRN in a McPherson suspension system connected to an aluminum alloy wheel with a Y-shaped spoke, and the propagation characteristics of TCRN in the McPherson suspension system under different working conditions were obtained.