Effect of Driving Force Characteristics on the Power Flow of L-shaped Plate

doi:10.3969/j.issn.1000-1093.2013.08.011

Abstract

Abstract:

A theoretical model of L-shaped plate is established based on the waveguide method. The effect of an included angle between driving force and L-shaped plate on its power flow characteristics is analyzed. Both force and moment are applied to investigate how the moment affects the correlationship between the excitation angle and the system's power flow. The research shows that the in-plane vibrational power flows in the system increase as frequency increases and get close to the power flow of the flexural wave gradually. If the moment applied is very small, the flexural wave in the indirectly excited plate is mainly decided by the transmission of flexural wave from the adjacent plate at low frequencies and reduces with the decrease in the exciting angle of force, yet the high frequency flexural wave is mainly transited from the in-plane wave and increases when the excitation angle decreases. However, if the moment applied is large, all vibrational power flows in the L-shaped plate depend principally on the moment and increase with it.

Key words: vibration and wave, coupled vibration, L-shaped plate, power flow, driving force characteristics, waveguide method

CLC Number:

TB53

ZHAO Zhi-mei, SHENG Mei-ping. Effect of Driving Force Characteristics on the Power Flow of L-shaped Plate[J]. Acta Armamentarii, 2013, 34(8): 986-993.

References

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