A study on the elastic wave transmission characteristics of a beam and orthotropic plate system
WANG Wenhui,ZHONG Qiang,HU Wanlu,CHEN Haibo
CAS Key Laboratory of Mechanical Behavior and Design of Materials, Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, China
Abstract:This research focuses on the elastic wave transmission characteristics in an orthotropic plate and isotropic beam coupling system.Based on the dynamic analysis of bending wave propagation, we deduced the power flow transmission coefficient (PTC) formulation between the subsystems and the coupling loss factor (CLF) expression at the coupling boundary.The effects of internal loss factor, frequency and direction angle α on the transmission coefficient were calculated and analyzed.The correctness of the coupled model was verified by comparison with the finite element results.Finally, the coupling structure of the isotropic plate and the beam was compared.Simulation results show that when the bending wave is incident, the direction angle α has significant influence on the transmission coefficient.When the direction angle α is 90°, the transmission coefficient is the smallest.At the same time, the internal loss factor of the beam has significant influence on the transmission coefficient.As the internal loss factor increases, the transmission coefficient also increases.
王文晖,钟强,胡婉璐,陈海波. 梁与正交各向异性板弯曲波的传递特性研究[J]. 振动与冲击, 2021, 40(4): 138-147.
WANG Wenhui,ZHONG Qiang,HU Wanlu,CHEN Haibo. A study on the elastic wave transmission characteristics of a beam and orthotropic plate system. JOURNAL OF VIBRATION AND SHOCK, 2021, 40(4): 138-147.
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