偏心加筋板结构能量传递特性分析

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Abstract Based on the thin plate theory and Euler-Bernoulli beam theory, energy transmission characteristics of flexural wave in an eccentrically stiffened plate were studied. Considering longitudinal wave and shear wave in-plane due to stiffener eccentricity, coupled equations at stiffener were established. Then energy transmission coefficients of different wave types were solved with the wave method, the results were compared with the finite element simulation ones to verify the correctness of the theoretical model. Furthermore, characteristics of elastic wave type conversion and energy transmission coefficient in frequency domain and at wave’s incident angle were investigated to analyze effects of stiffener eccentricity, ratio of stiffener height to plate thickness on energy transmission coefficient. The results showed that there is a critical angle for conversion of flexural wave into in-plane ones, when the incidence angle is close to the critical one, a large amount of flexural wave can be converted into in-plane ones, and the influence of eccentricity can’t be neglected.

Key words： stiffened plate blocking mass vibration transmission wave method elastic wave

Received: 14 December 2017 Published: 28 June 2019

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	CHEN Meixia
	PENG Canbing
	CHEN Qi

Cite this article:

CHEN Meixia,PENG Canbing,CHEN Qi. Energy transmission characteristics of eccentrically stiffened plates[J]. JOURNAL OF VIBRATION AND SHOCK, 2019, 38(13): 111-117.

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http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2019/V38/I13/111

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