基于有限元的能量流分析方法研究

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振动与冲击 ›› 2012, Vol. 31 ›› Issue (8) : 47-51.

论文

基于有限元的能量流分析方法研究

张瑾1; 马兴瑞2; 韩增尧1; 邹元杰1

作者信息 +

Energy flow anlysis from finite element method

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

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文章历史 +

摘要

区别于传统的统计能量分析，通过对有限元方法计算结果的后处理也可进行能量流分析。为提高计算效率，分析过程中对某些与频率相关的积分进行了推导简化。在此基础上，以Matlab为平台编写了相关计算程序。而后，对具体算例进行基于有限元的能量流分析并与统计能量分析的结果进行比较。最后，基于此算例进一步对基于有限元的能量流分析方法进行改进并对相应的计算程序进行优化提高计算效率。

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.

导出引用

张瑾;马兴瑞;韩增尧;邹元杰. 基于有限元的能量流分析方法研究[J]. 振动与冲击, 2012, 31(8): 47-51

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