摘要
为了给复杂结构系统振动能量分布的预测提供新的研究思路,该文提出了一种平板结构振动能量分布预测方法——动态能量分析(DEA)。该方法结合有限元法和射线追踪法的思想,首先对平板结构进行网格划分,利用射线模拟单元内的能量流,构建出单个单元内的能量映射,并扩展到相邻单元,从而获得每个单元的能量密度,最后可以得到整个结构的能量分布。该文对简支平板模型实例进行计算分析,结果表明该方法在一定程度上比能量有限元分析(EFEA)更为精确,可作为解决简单板材能量分布问题的一种新方法。
In order to provide a research approach for the prediction of vibration energy distribution of complex structural system,the dynamic energy analysis(DEA)is proposed in this paper to obtain vibration energy distribution of plate structure,which combines the idea of finite element method and ray tracing method.Firstly,the plate structure is meshed,and the energy flow is simulated in the form of rays to construct the energy mapping in the element,which can be extended to adjacent elements,so as to obtain the energy density of each element,and finally the energy distribution of the whole structure can be obtained.Then,an example of simply supported plate model is calculated and analyzed.The results indicate that the method is more accurate than energy finite element analysis(EFEA)to some extent which can be applied to solve the problem of energy distribution of simple plates.
作者
王传龙
常顺
李硕
WANG Chuanlong;CHANG Shun;LI Shuo(Marine Design and Research Institute of China,Shanghai 200011,China;Harbin Engineering University,Harbin 150001,China)
出处
《应用声学》
北大核心
2025年第5期1334-1341,共8页
Journal of Applied Acoustics
关键词
结构振动
平板结构
动态能量分析
能量密度
Structural vibration
Flat plate
Dynamic energy analysis
Energy density
