摘要
通过结构声强法研究了含开口复杂结构中振动能量传递特性。首先介绍了结构振动声强分量的相关理论以及振动能量流的计算公式;基于Matlab与APDL语言编写了集成可视化计算程序。在数值计算中,先验证了可视化程序的有效性;以含开口耦合结构为例,实现振动能量传递和分布的可视化,证明了计算程序的实用性和创新性;同时讨论了不同激励频率以及开口存在对能量传递及分布的影响,得到一些有益的结论。
The visualization of vibration energy flow in coupled structures with cutouts is analyzed based on the structural intensity method. Firstly,the formulations for structural intensity calculations and formulations for energy are presented. After validation of the visualization method,numerical results of coupled plates model with cutouts is calculated by finite element approach to predict the structural intensity＇s components. Then,the vector plot and energy distribution visualization carried out by Matlab are used to indicate the location of vibration energy and the sinking position where the energy is dissipated.Furthermore,the change of frequency and the existing of cutout on the effects of energy flow characteristics are discussed. Visualizing energy flow provides a more accurate scientific basis to the analysis of structural vibration energy transmission in a complex structure.
出处
《舰船科学技术》
北大核心
2015年第3期32-35,共4页
Ship Science and Technology
关键词
振动能量
结构声强
可视化
开口耦合板
vibration energy flow
structural intensity
visualization
coupled plate with cutouts
