A judging principle of crucial vibrational transmission paths in plates

作者：Wang, Bin^*; Li, Dong Xu; Jiang, Jian Ping; Liao, Yi Huan

来源：Journal of Sound and Vibration, 2016, 380: 146-164.

DOI：10.1016/j.jsv.2016.06.006

• Structural intensity
• Crucial vibrational transmission path
• Judging principle
• Energy flow
• Vibration control

This paper developed a judging principle of crucial vibrational transmission path (VTP) in plates. Novel generalized definitions of VTPs are given referred to the meaning of streamlines. And by comparing governing equations, the similarity between energy flow and fluid motion is firstly found so that an analytic method of VTPs in plates is proposed by analogy with fluid motion. Hereafter, the crucial VTP is defined for energy flows at objective points and relative judging criteria is given. Finally, based on two numerical experiments of passive control, the judging principle is indirectly verified by comparing the reduction effects of energy flows at focused points and relative judgment results of crucial VTPs. This paper is meaningful for analyzing and applying the VTPs in plates to guide the control design in future.

• 出版日期2016-10-13
• 单位中国人民解放军国防科学技术大学