PROCESS OF DESIGNING BODY STRUCTURES FOR THE REDUCTION OF REAR SEAT NOISE IN PASSENGER CAR
PROCESS OF DESIGNING BODY STRUCTURES FOR THE REDUCTION OF REAR SEAT NOISE IN PASSENGER CAR
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DOI：
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发表时间：
2007-02
影响因子：
1.6
通讯作者：
K. C. Kim;C. M. Kim
中科院分区：
文献类型：
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作者：
K. C. Kim;C. M. Kim
本文从车身结构和面板贡献两方面分析了乘用车加速过程中产生的内部噪声。根据传递方式，将室内噪声分为结构传递噪声和空气传递噪声。结构传递噪声是发动机的振动能量作为激励源，通过发动机悬置、驱动系统和车身面板振动传递到车身时产生的噪声。当结构噪声在汽车内部的声腔中产生共振时，会产生剧烈的轰鸣噪声。本研究通过对后座相对于前座的声压级高的频率范围的原因分析，描述了改善车身结构和面板形式的计划。为此，通过结构声场耦合分析，分析了车身附着刚度与声灵敏度的相关性，并对面板敏感部件进行了分析。通过本课题的研究，可以在原型车阶段之前，通过对车身结构的改进，降低后座噪音，改善稳定性能，实现轻量化设计。预计开发周期和测试车阶段也将缩短。
This study analyzes the interior noise that is generated during acceleration of a passenger car in terms of car body structure and panel contribution. According to the transfer method, interior noise is classified into structure-borne noise and air-borne noise. Structure-borne noise is generated when the engine’s vibration energy, an excitation source, is transferred to the car body through the engine mount and the driving system and the panel of the car body vibrates. When structure-borne noise resonates in the acoustic cavity of the car interior, acute booming noise is generated. This study describes plans for improving the car body structure and the panel form through a cause analysis of frequency ranges where the sound pressure level of the rear seat relative to the front seat is high. To this end, an analysis of the correlation between body attachment stiffness and acoustic sensitivity as well as a panel sensitive component analysis were conducted through a structural sound field coupled analysis. Thrugh this study, via research on improving the car body structure in terms of reducing rear seat noise, stable performance improvement and light weight design before the proto-car stage can be realized. Reduction of the development period and test car stage is also anticipated.