摘要
为探究负电容压电分流阻尼声学黑洞梁在振动传递中的带隙特性,本文基于长波近似假设建立了压电材料的机电耦合模型,并使用多物理场耦合仿真方法计算了声学黑洞-压电分流阻尼梁在强迫振动下的传输特性。经过与文献中结果对比验证了方法的正确性,并揭示了分流电路类型、电容大小和声学黑洞对结构带隙特性和抑振性能的影响规律。研究表明将负电容分流电路与声学黑洞相结合能够有效拓宽梁结构的带隙范围并提高其振动衰减的性能。
To explore the band gap characteristics of a negative capacitance piezoelectric shunt damping acoustic black hole beam in vibration transmission,an electromechanical coupling model of the piezoelectric material is es-tablished based on the long-wave approximation hypothesis.The transmission characteristics of the acoustic black hole-piezoelectric shunt damping beam under forced vibration are calculated using a multi-physics coupling simula-tion method.The accuracy of the method is verified by comparing it with results from existing literature.The study reveals the influence of shunt circuit type,capacitance size,and the acoustic black hole on the band gap character-istics and vibration suppression performance of the structure.The findings demonstrate that combining a negative capacitance shunt circuit with an acoustic black hole effectively broadens the band gap range of the beam structure and enhances its vibration attenuation performance.
作者
王天浩
叶天贵
陈赞栩
陈玉坤
步春阳
靳国永
WANG Tianhao;YE Tiangui;CHEN Zanxu;CHEN Yukun;BU Chunyang;JIN Guoyong(College of Power and Energy Engineering,Harbin Engineering University,Harbin 150001,China;China Shipbuilding Co.,Ltd.705th Research Institute,Xi′an 710077,China)
出处
《哈尔滨工程大学学报》
北大核心
2025年第5期920-927,共8页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(52271309,52225109,52241101).
关键词
声学黑洞
压电分流阻尼
负电容
强迫振动
带隙特性
抑振
长波近似假设
梁结构
acoustic black hole
piezoelectric shunt damping
negative capacitance
forced vibration
band gap characteristics
vibration suppression
long-wave approximation hypothesis
beam structure
