Abstract:
The vibration power flow characteristics of the thin plate structures under different boundary conditions are studied in this paper.The vibration power flow equation of thin plate structure, which is from time domain to frequency domain, can be obtained based on the concept of structural intensity and the finite element model of thin plate structure.Moreover, the vibration power flow of thin plate structure is obtained by using the classical plate theory combined with the finite element method, and the corresponding power flow frequency curve and power flow vector field distribution are also analyzed.According to the numerical analysis results, the position of vibration source and distribution character of vibration energy can be known by power flow vector field distribution, and the each natural frequency of structure are correspond to the frequency of the peak of vibration power flow of the frequency.