Noise isolation properties of the closure systems are important factors for the acoustic performance of vehicles. This study explains sound transmission through a door sealing system, and numerical methods analyze all acoustic responses’ parameters. A specific design of experiments (DoE) analysis is carried out to reveal the effects of each material along with the predefined geometric entities and their dimensions. Viscoelastic material parameters are included with full factorial designs for a particular geometry. Material optimization is implemented with the Taguchi method by incorporating noise factors. Optimization of the geometric entities is studied, and the best section shapes for acoustic performance are obtained. A robust optimization study is conducted by considering the uncontrollable noise factors. Consequently, the door closing efforts compromise the acoustic design to present an overall method with design constraints.

封闭系统的隔音性能是影响车辆声学性能的重要因素。这项研究解释了声音通过门密封系统的传播，数值方法分析了所有声学响应的参数。进行了特定的实验设计 (DoE) 分析，以揭示每种材料的影响以及预定义的几何实体及其尺寸。粘弹性材料参数包含在特定几何形状的全因子设计中。使用田口方法通过结合噪声因素来实现材料优化。研究了几何实体的优化，并获得了声学性能的最佳截面形状。通过考虑不可控的噪声因素进行稳健的优化研究。最后，