Design and performance study of acoustic packaging materials for biomimetic coupled sound absorption structure in automobiles
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Wei Ye
Abstract
This article studies the application of biomimetic triangular non-smooth surface materials in automotive acoustic packaging and their effects on sound absorption and insulation performance. Firstly, the application of Statistical Energy Analysis (SEA) in predicting high-frequency vibration noise in automobiles was discussed. Due to the limitations of the acoustic finite element method in predicting high-frequency noise, the SEA method has gradually been widely applied and continuously improved in domestic and foreign research. This article establishes SEA models for the front panel and floor. It analyzes the performance of different acoustic packaging materials through simulation, focusing on the sound absorption and insulation effects of biomimetic non-smooth surface materials. The experimental results show that the acoustic packaging material with a three-layer structure has excellent sound absorption and insulation performance in the high-frequency range. Specifically, the acoustic packaging of the cowl panel and floor adopts a three-layer material structure composed of organic fiber, molded felt, polyurethane foam and sound insulation felt. The simulation results show that the PU foam material with a bionic triangular wedge surface has a sound absorption coefficient of 0.983 at 1,000 Hz, significantly better than the traditional smooth surface material. In addition, the sound insulation performance of the front panel and floor increased by 2.9 dB and 48.1 dB, respectively, at 5,000 Hz.
Funding source: National Key Research and Development Program of China
Award Identifier / Grant number: SQ2023YFD2000030
Funding source: National Natural Science Foundation of China General Project: Research on biomimetic vibration deep loosening method for differentiated agricultural needs Research on the method of bionic vibration subsoiling for differentiated agronomic needs
Award Identifier / Grant number: 52275288
Funding source: Creation and Application of Intelligent Low Carbon Field Management and Imitation Seedling Killing Technology Equipment. This number is not final yet, and it may be changed after filling it out online. We will send it to everyone later; Creation and application of intelligent low-carbon field management and imitation seedling killing technology equipment
Award Identifier / Grant number: SQ2023YFD2000030
Funding source: Jilin Province Science and Technology Development Plan: Development and Demonstration of Medium Frequency Vibration Deep Pine Equipment for Differentiated Agronomy Development and Demonstration of Medium Frequency Vibration subsoiling Equipment for Differentiated Agronomy
Award Identifier / Grant number: 20210202021NC
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Research ethics: The local Institutional Review Board deemed the study exempt from review.
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Informed consent: Informed consent was obtained from all individuals included in this study.
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Author contributions: Wei Ye and Yunhai Ma is contributed to the design and methodology of this study, the assessment of the outcomes and the writing of the manuscript.
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Use of Large Language Models, AI and Machine Learning Tools: None declared.
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Conflict of interest: Authors state no conflict of interest.
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Research funding: 1. National Key Research and Development Program Project Number: SQ2023YFD2000030, Project Name: Creation and Application of Intelligent Low Carbon Field Management and Imitation Seedling Killing Technology Equipment. This number is not final yet, and it may be changed after filling it out online. We will send it to everyone later; Creation and application of intelligent low-carbon field management and imitation seedling killing technology equipment. Project Number: SQ2023YFD2000030. 2. National Natural Science Foundation of China General Project: Research on biomimetic vibration deep loosening method for differentiated agricultural needs. Research on the method of bionic vibration subsoiling for differentiated agronomic needs Project Number: 52275288. 3. Jilin Province Science and Technology Development Plan: Development and Demonstration of Medium Frequency Vibration Deep Pine Equipment for Differentiated Agronomy Development and Demonstration of Medium Frequency Vibration subsoiling Equipment for Differentiated Agronomy Project Number: 20210202021NC.
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Data availability: Not applicable.
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