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Abstract
Phononic crystal is a novel type of periodic composites which is presented near years. When the elastic wave frequency falls within its band gap of the phononic crystal, the propagation of vibration and sound are forbidden. This property provides a new research method for the control of low-frequency interior noise. MSC. Nastran simulation method is applied to compare the propagation of two-dimensional Bragg phononic crystal and the locally resonant phononic crystal. The impact of the parameters on the propagation is analyzed by using MSC.Nastran simulation method in order to fabricate the photonic crystal structure suitable for the automotive interior noise control.
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