Prediction of a V-8 diesel engine's structural radiated noise and research of important parameters' effects on the engine's acoustic behaviors  

作　　者：冯慧华 张智渊 鲁守卫 左正兴 

机构地区：[1]School of Mechanical Engineering,Beijing Institute of Technology

出　　处：《Journal of Beijing Institute of Technology》2011年第3期365-371,共7页北京理工大学学报（英文版）

基　　金：Supported by the Ministry level advanced research project(40402040108)

摘　　要：Based on the coupled boundary element method-finite element method （BEM-FEM） method and the acoustic transfer vector （ATV） technology, BEM/FEM model is proposed for a Vtype eight cylinders engine acoustic radiation simulating analysis under semi-anechoic condition. Acoustic radiation power, field points sound pressure level and panel contributions are calculated by acoustic radiation response analysis. Additionally, based on the engine acoustic performance, different acoustic behaviors of engine are studied by changing engine materials, oil pan structures as well as geometry parameters. The acoustic performance of this engine is predicted and the influence of material, structural and geometry parameters on engine radiated noise are generalized. The principle will guide the design and optimization of the engine prototype in further work.Based on the coupled boundary element method-finite element method （BEM-FEM） method and the acoustic transfer vector （ATV） technology, BEM/FEM model is proposed for a Vtype eight cylinders engine acoustic radiation simulating analysis under semi-anechoic condition. Acoustic radiation power, field points sound pressure level and panel contributions are calculated by acoustic radiation response analysis. Additionally, based on the engine acoustic performance, different acoustic behaviors of engine are studied by changing engine materials, oil pan structures as well as geometry parameters. The acoustic performance of this engine is predicted and the influence of material, structural and geometry parameters on engine radiated noise are generalized. The principle will guide the design and optimization of the engine prototype in further work.

关 键 词：diesel engine finite element method boundary element method acoustic transfer vec-tor acoustic contribution acoustic optimization 

分 类 号：TK421.6[动力工程及工程热物理—动力机械及工程]