用于薄壁件镜像铣削振动抑制的嵌入式局域共振型超材料研究

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中文摘要：在航空、船舶、铁路等领域中，由大型零件组成的壳体是机械结构的重要组成部分。这些工件具有薄壁、刚性弱的特点，因此需要一种高效可行的加工技术对薄壁工件的强迫振动和变形进一步抑制，以提高加工精度。据此，提出了一种具有双振子的嵌入式局域共振超材料，并首次结合磁吸随动支撑技术对薄壁工件的振动和变形进行衰减，通过对元胞模型的频带结构和参数调整规律进行系统研究和验证，证明了该模型具有宽带、轻量化和适用低频的特点。其特点以及相对简单的结构是应用于薄壁结构铣削加工的独特优势。通过镜像铣削实验评估了带有超材料的随动件对工件振动抑制作用的改善。结果表明，组合装置使薄壁工件的均方根幅值减小了近9％，表明其在不同主轴转速下的振动控制性能均优于原装置。因此，将所提出的局域共振超材料应用于磁吸随动支撑技术，为薄壁工件镜像铣削振动抑制提供了一种一体化、高效的解决方案。此外，本文将局域共振超材料扩展到了实际工程领域，有助于从超材料的角度改善镜像铣削的现状。

外文标题：Research on embedded locally resonant metamaterials used for vibration attenuation of thin-walled workpieces in mirror milling

外文摘要：The shell composed of large-scale parts is the essential component of mechanical structures in the aerospace,shipping,and railway industries.These workpieces are characterized by thin walls and weak rigidity,thus requiring an effective technology for high-performance machining.Accordingly,an embedded locally resonant metamaterial with double resonators is proposed and combined with the magnetic follow-up support technology to attenuate the vibration of thin-walled parts for the first time.The band structures and parametric adjustment laws are systematically investigated and validated by analytical calculation and finite element method,which proves the proposed model is broadband,lightweight,and flexible in low frequencies.Its characteristics,as well as the relatively simple structure,are unique advantages for thin-walled structure milling.Finally,mirror milling experiments have been performed to assess the slave module with the proposed substructure.From the results,the root mean square amplitude of the thin-walled workpiece with the combined device decreases by nearly 9％,which means that the performance has been improved by the combined device.Furthermore,this work provides an integrated and efficient solution for vibration suppression in thin-walled parts milling,which extends locally resonant metamaterials to practical engineering fields and helps to improve the status quo of mirror milling from the perspective of metamaterials.

外文关键词：

Local resonanceBand gapThin-walled workpiecesVibration suppression

作者：

丁北、王炜、肖聚亮、吴志强、刘成

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作者单位：

School of Mechanical Engineering,Tianjin University,Tianjin 300350,China

Tianjin Key Laboratory of Nonlinear Dynamics and Control,Tianjin 300350,China

Key Laboratory of Modern Mechanisms and Equipment Design of the State Ministry of Education,Tianjin University,Tianjin 300350,China

关键词：

Local resonance Band gap Thin-walled workpieces Vibration suppression

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaTianjin Research Program of Application Foundation and Advanced TechnologyIoT Standards and Application Key Laboratory of the Ministry of Industry and Information Technologv

项目编号：

1217224812021002123020221213201022JCQNJC00780202306

出版年：

2024

DOI：

10.1007/s10409-023-23320-x

力学学报(英文版)

CSTPCD

影响因子：0.363

ISSN：0567-7718

年,卷(期)：2024.40(8)