Acoustic performance of industrial mufflers with CAE modeling and simulation
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초록
This paper investigates the noise transmission performance of industrial mufflers widely used in shipsbased on the CAE modeling and simulation. Since the industrial mufflers have very complicated internal structures,the conventional Transfer Matrix Method (TMM) is of limited use. The CAE modeling and simulation is thereforerequired to incorporate commercial softwares: CATIA for geometry modeling, MSC/PATRAN for FE meshing and LMS/SYSNOISE for analysis. Main sources of difficulties in this study are led by complicated arrangement of reactive elements,perforated walls and absorption materials. The reactive elements and absorbent materials are modeled byapplying boundary conditions given by impedance. The perforated walls are modeled by applying the transfer impedanceon the duplicated node mesh. The CAE approach presented in this paper is verified by comparing with the theoreticalsolution of a concentric-tube resonator and is applied for industrial mufflers.
Abstract
This paper investigates the noise transmission performance of industrial mufflers widely used in shipsbased on the CAE modeling and simulation. Since the industrial mufflers have very complicated internal structures,the conventional Transfer Matrix Method (TMM) is of limited use. The CAE modeling and simulation is thereforerequired to incorporate commercial softwares: CATIA for geometry modeling, MSC/PATRAN for FE meshing and LMS/SYSNOISE for analysis. Main sources of difficulties in this study are led by complicated arrangement of reactive elements,perforated walls and absorption materials. The reactive elements and absorbent materials are modeled byapplying boundary conditions given by impedance. The perforated walls are modeled by applying the transfer impedanceon the duplicated node mesh. The CAE approach presented in this paper is verified by comparing with the theoreticalsolution of a concentric-tube resonator and is applied for industrial mufflers.
참고문헌 (13)
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