تحليل اثرات ماود متخلخل درسيستم مكش موتورخودرو به روش انرژي آماري

Investigation of porous material effects on automotive intake system using Statistical Energy Analysis

دراين مقاله تحليل رفتار آگوستيكي سيستم مكش موتورخودرو به منظور بررسي اثرات استفاده ازمواد متخلخل عايق صوت دران براي كاهش سطح صداي داخل خودرو به روش تحليل انرژي آماري مورد مطالعه قرار گرفته است.

Automobile manufactures are persistently trying to develop comfort of passengers by improving different specification such as decrease of sound level in engine compartments. There is a main problem that the noise generated in air intake systems may be disgusting. Statistical energy analysis is a suitable method for acoustical- vibration analysis of structures in high frequency range. In this paper, the air intake system of an engine compartment is modeled using SEA. The transmission loss through the intake duct is calculated with importing CAD model and creating subsystems at high frequency range. In addition, comparing the results of fully modeled of intake systems with current experimental data, shows a good accuracy of results especially in high frequency range. Furthermore, the influence of inserting porous material is studied.