复合材料薄板结构中的声学黑洞效应探究  

Acoustic black hole effect of composite sheet structures

作　　者：郑锋 黄薇[2] 季宏丽[1] 裘进浩[1] ZHENG Feng;HUANG Wei;JI Hongli;QIU Jinhao(State Key Laboratory of Mechanics and Control of Mechanical Structures,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China;School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京航空航天大学机械结构力学及控制国家重点实验室,南京210016 [2]南京理工大学机械工程学院,南京210094

出　　处：《航空学报》2023年第1期286-295,共10页Acta Aeronautica et Astronautica Sinica

基　　金：国家自然科学基金(52105107,52022039,V2241261);机械结构力学及控制国家重点实验室自主研究课题(MCMS-E-0521Y01,MCMS-I-0521G03);国家重点研发计划重点专项(2021YFB3400100)。

摘　　要：声学黑洞(ABH)作为一种新型波操控技术,通过裁剪结构厚度以实现波能量的聚集与耗散,在工程结构的减振降噪、能量回收等方面具有很好的应用前景。碳纤维复合材料(CFRP)具有质量轻、高比强度和比模量的特点,广泛应用于航空工程结构中。为了探究复合材料结构中的ABH效应,本文针对内嵌式的碳纤维复合材料ABH薄板结构(CFRP-ABH),利用有限元方法验证了其能量聚集效应,并探究了铺层角度对能量聚集效应的影响。另外,通过仿真计算和实验测试,研究分析了CFRP-ABH结构的动力学特性。结果表明,在200~3000 Hz的频率范围内,CFRP-ABH结构的振动水平相对于均匀厚度板有5~18 dB的降低,表现出优秀的宽频减振性能。The Acoustic Black Hole(ABH)as a new wave control technology achieves wave energy aggregation and dissipation by cutting structure thickness,exhibiting a good application prospect in vibration and noise reduction and energy recovery of engineering structures.Carbon Fiber Reinforced Plastics(CFRP)is widely used in aeronautical engineering because of its light weight,high specific strength,and specific modulus.To investigate the ABH effect of composite structures,we use the finite element method and verify the existence of energy aggregation characteristic of carbon fiber composite sheet structures embedded with ABH(CFRP-ABH),and further investigate the effect of ply angles on this characteristic.In addition,the dynamic characteristics of CFRP-ABH structures are analyzed through simulation calculation and experimental tests.The results show that the vibration level of the CFRP-ABH structure is 5-18 dB lower than that of the uniform thickness plate in the frequency range of 200-3000 Hz,displaying excellent broadband vibration reduction performance.

关 键 词：声学黑洞 碳纤维复合材料 各向异性 宽频带 振动抑制 

分 类 号：V214.33[航空宇航科学与技术—航空宇航推进理论与工程]