Research on Simulation and Prediction of Internal Combustion Engine Structural Acoustic Radiation

摘要

With the purpose of efficiently predicting structural radiated noise of internal combustion engine(I.C.E.),a new simulation technique is introduced,which is an approach based on boundary element method (BEM),acoustic transfer vector(ATV) technique and coupled boundary element model and finite element model (BEM-FEM) approach.Analyses of vibration exciting loads,computing structural dynamic characteristics and dynamic responses have led to theoretical results,which are tested on an L6 diesel engine to validate this proposed technique in engineering practice.