Investigation of Vehicle Passenger Compartment Noise Due to Random Acoustic, Vibration, and Turbulent Boundary Layer Excitations

随机声学、振动和湍流边界层激励引起的车辆乘客室噪声的研究

• 批准号: 9313838
• 负责人: Sean Wu
• 金额: $ 2.5万
• 依托单位: Wayne State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-09-01 至 1995-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9313838&HistoricalAwards=false
• 关键词: Investigation; Vehicle; Passenger; Compartment; Noise

9313838 Wu In this project, computer models are developed for predicting noise levels inside a moving vehicle passenger compartment. Using these models, engineers are able to optimize vehicle design alternatives, and improve interior noise comfort level. The investigation provide a better understanding of the physics involved in sound generation and transmission mechanisms due to random acoustics, vibrations, and turbulent boundary-layer excitations. In addition, the results form a useful input to the development of design criteria for vehicle panel structures, sub-structures, and joint connections in order to minimize vibration and sound transmission into the passenger compartment. Coupled with vehicle structure and aerodynamic models, the acoustic models from this research project form a powerful design tool for accurately simulating the sound field inside a moving vehicle, and identifying the parameters that play a critical role in both vehicle pass-by noise radiation and noise levels within the passenger compartment. *** v s t $ $ ( F / 1 Times Symbol " Helvetica 5 Courier New " h % E E ! C R:\WW20USER\ABSTRACT.DOT wu maryjohnson maryjohnson

在这个项目中，开发了计算机模型来预测移动车辆乘客舱内的噪音水平。使用这些模型，工程师能够优化车辆设计方案，并提高内部噪音舒适度。这项研究为更好地理解随机声学、振动和湍流边界层激励下的声音产生和传输机制提供了物理基础。此外，研究结果为制定车辆面板结构、子结构和连接的设计标准提供了有用的输入，以最大限度地减少振动和声音传播到乘客舱。本研究项目的声学模型与车辆结构和气动模型相结合，形成了一个强大的设计工具，可以精确模拟运动车辆内部的声场，并识别对车辆经过噪声辐射和乘客舱内噪声水平起关键作用的参数。*** *** *是t​$ $ (F / 1 Times Symbol " Helvetica 5 Courier New " h % E E ！R C: \ WW20USER \抽象。玛丽·约翰逊，玛丽·约翰逊