The instrument panel assembly is an important structure to shield powertrain noise and front wheel noise, and the instrument panel sound insulation system plays a key role in it. Therefore, the sound insulation characteristics of the instrument panel sound insulation components appear particularly important. In the existing technology, the acoustic design of instrument panel mostly adopts the reverse design method and pays little attention to the forward design of acoustic system, which tends to lead to the shortcomings such as inaccurate acoustic design and poor acoustic design quality. The reverse design also restricts the development cycle, so the control and design of acoustic performance cannot be realized in the initial stage of design. Based on the above problems, the statistical energy model of the dashboard model was established by combining the statistical energy flow method and the proxy model method, and the influences of different acoustic cladding layers, different thickness, leakage, and new material microfibers on the sound insulation parameters of the front coaming were simulated. The general rules that affect the sound insulation performance of the structure are obtained. On this basis, multiobjective genetic algorithm and proxy model method are used to optimize the insertion loss of the front panel acoustic pack and the weight of the dashboard by introducing multiobjective variable and experimental design method, so as to obtain the best solution to meet the requirements of insertion loss and lightweight acoustic pack of the dashboard. It is of great engineering significance for the development of acoustic components for forward design instrument panel.

中文翻译：

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基于SEA的仪表板隔音包装的仿真与优化

仪表板组件是屏蔽动力总成噪声和前轮噪声的重要结构，而仪表板隔音系统在其中起着关键作用。因此，仪表板隔声部件的隔声特性显得尤为重要。在现有技术中，仪表板的声学设计大多采用逆向设计方法，很少注意声学系统的前向设计，容易导致声学设计不准确，声学设计质量较差等缺点。反向设计也限制了开发周期，因此在设计初期就无法实现对声学性能的控制和设计。基于上述问题，结合统计能量流法和代理模型法，建立了仪表板模型的统计能量模型，并研究了不同的声学包层，不同的厚度，泄漏量和新材料微纤维对前围板隔音参数的影响被模拟。获得影响结构的隔音性能的一般规则。在此基础上，采用多目标遗传算法和代理模型方法，通过引入多目标变量和实验设计方法，优化前面板声学包的插入损耗和仪表板的重量，以获得满足要求的最佳解决方案。仪表板的插入损耗和轻巧的隔音效果。