Energy flow anlysis from finite element method

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Journal of Vibration and Shock ›› 2012, Vol. 31 ›› Issue (8) : 47-51.

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Energy flow anlysis from finite element method

ZHANG Jin1, MA Xing-rui2, HAN Zeng-yao1, ZOU Yuan-jie1

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Abstract

Energy flow analysis without using statistical energy analysis (SEA) can be formed by post-processing the results of a finite element analysis (FEA) of a system. In this analysis, some specific matrices or terms, which are functions of frequency, are rearranged and deduced in order to improve the computational efficiency. Consequently, the calculation program is developed on the platform of Matlab. A numerical example is presented, and the results of the analysis are compared with those of SEA. Based on the foregoing results, the program is improved once more.

Key words

finite element / statistical energy analysis / energy flow / nodal coordinate / modal coordinate / frequency averages

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ZHANG Jin;MA Xing-rui;HAN Zeng-yao;ZOU Yuan-jie. Energy flow anlysis from finite element method[J]. Journal of Vibration and Shock, 2012, 31(8): 47-51