拖拉机驾驶室声场分析中的边界元法研究

Study on BEM for Acoustical Field Analysis of Tractor Cab

利用有限元软件ANSYS和边界元分析软件SYSNO ISE对有座椅拖拉机驾驶室进行建模和声场的分析研究;应用ANSYS软件建立有座椅的驾驶室空腔模型,在边界元分析软件SYSNO ISE中实现了用有限元法和间接边界元法的声固耦合;并采用间接边界元法分析计算了有座椅驾驶室的声学特性;对有座椅与没座椅的驾驶室内的声场特性进行比较;分析研究了座椅对驾驶室内的声学贡献。

The analysis of the model and the acoustic field from a tractor cab with seats has been carried out by using FEM software ANSYS and BEM software SYSNOISE ; sound-solid coupling was achieved with the method of FEM and BEM by using SYSNOISE ; at last, the sound response of tractor cab with seats is calculated by using indirect BEM with software SYSNOISE,the acoustic contribution of the seats of the cab was calculated and analyzed by comparing the sound response of tractor cab with seats and without seats.