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Indexed by : Journal paper

Document Code : 20102513031084

First Author : Shuming Chen

Author : 刘波,周舟,赵雪梅

Date of Publication : 2010-05-20

Journal : Journal of Mechanical Engineering

Included Journals : EI  

Affiliation of Author(s) : Jilin University

Place of Publication : China

Discipline : 工学

Funded by : 国家自然科学基金(50975119)； 国家高技术研究发展计划(863计划,2006AA110102-3)资助项目；

Document Type : J

Volume : 46

Issue : 10

Page Number : 88-94

ISSN : 05776686

Key Words : Car Vehicle exterior noise Statistical energy analysis Modal density Damping loss factor Coupli

Teaching and Research Group : State Key Laboratory of Automotive Dynamic Simulat

CN : 11-2187/TH

Abstract : In order to predict the exterior noise of the car, a new method for exterior noise prediction based on statistical energy analysis (SEA) is proposed. A SEA model is built, including 47 body substructures and exterior acoustic cavities. The modal density and damping loss factor of the regular shaped subsystems are determined by using theoretical method, and the modal density and damping loss factor of the complex structure subsystems are measured. Meanwhile, the coupling loss factors between line junction and area junction subsystems are calculated. A uniform speed of 55 km/h is determined as t

First-Level Discipline : 机械工程

Translation or Not : no