Unstructured zero-order energy finite element method for coupled plate structures

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (13) : 140-145.

ZHOU Hong-wei CHEN Hai-bo WANG Yong-yan

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Abstract

Base on the governing equations of Energy Flow Analysis (EFA), meshing plates by triangles, an unstructured zero-order energy finite element method (uEFEM0) is developed. A procedure of calculate the L-shape plates and a simplified vehicle shell was presented, in which both bending and in-plane wave fields were considered. The proposed method was used to predict the distribution of energy response. To confirm its validity, Energy Finite Element Method (EFEM) and Statistical Energy Analysis (SEA) were employed to simulate the same structures, and the results show a good agreement. For simulating plates vibrating in high frequency, it is necessary to considering not only bending wave field but also in-plane wave fields, since the level of in-plane wave energy could be close to that of bending wave energy.

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unstructured zero-order finite element / coupled plates structure / high frequency vibration with multi-wave fields

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ZHOU Hong-wei CHEN Hai-bo WANG Yong-yan. Unstructured zero-order energy finite element method for coupled plate structures[J]. Journal of Vibration and Shock, 2015, 34(13): 140-145

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