Abstract:The general expressions of the traveling wave approach for a discrete plate were established, by introducing local coordinates, discrete wave amplitude coefficient matrix, and assemble state vector matrix. These general expressions led to that the study object of the traveling wave approach was extended from simple plates to multi-plate coupled structures. Structural steady vibration responses calculated with the self-compiled program of the traveling wave approach were compared with the numerical results with the finite element method. This traveling wave approach semi-analytical solution was verified to be effective and convenient. Based on the classical thin plate theory and Mindlin plate theory, respectively, the traveling wave method was used to compute active power flow and passive power flow of multi-plate coupled structures. The calculated results showed that within the whole frequency range, shear and rotary inertia inplane have a great influence on active power flow and passive power flow; when conducting active power flow control, using the thick plate theory is recomended as far as possible; increase in loss factor can effectively reduce the peak value of passive power flow near the frequency range of resonances, but this influence is not large within the other frequency range.
漆琼芳1,喻敏1,陈攀2. 基于行波法的多板耦合结构振动功率流研究[J]. 振动与冲击, 2017, 36(3): 156-162.
QI Qiongfang1,YU Min1,CHEN Pan2. Vibration power flow of multi-plate coupled structures based on traveling wave approach. JOURNAL OF VIBRATION AND SHOCK, 2017, 36(3): 156-162.
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