首页|An electromagnetic semi-active dynamic vibration absorber for thin-walled workpiece vibration suppression in mirror milling

An electromagnetic semi-active dynamic vibration absorber for thin-walled workpiece vibration suppression in mirror milling

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As critical components of aircraft skins and rocket fuel storage tank shells,large thin-walled workpieces are susceptible to vibration and deformation during machin-ing due to their weak local stiffness.To address these challenges,we propose a novel tunable electromagnetic semi-active dynamic vibration absorber(ESADVA),which inte-grates with a magnetic suction follower to form a followed ESADVA(follow-ESADVA)for mirror milling.This system combines a tunable magnet oscillator with a follower,enabling real-time vibration absorption and condition feedback throughout the milling process.Additionally,the device supports self-sensing and frequency adjustment by pro-viding feedback to a linear actuator,which alters the distance between magnets.This resolves the traditional issue of being unable to directly monitor vibration at the machin-ing point due to space constraints and tool interference.The frequency shift characteris-tics and vibration absorption performance are comprehensively investigated.Theoretical and experimental results demonstrate that the prototyped follow-ESADVA achieves fre-quency synchronization with the milling tool,resulting in a vibration suppression rate of approximately 47.57％.Moreover,the roughness of the machined surface decreases by 18.95％,significantly enhancing the surface quality.The results of this work pave the way for higher-quality machined surfaces and a more stable mirror milling process.

semi-active dynamic vibration absorber(SADVA)mirror millingself-sensingvibration absorption tuningthin-walled workpiece

Jianghua KONG、Bei DING、Wei WANG、Zhixia WANG、Juliang XIAO、Hongyun QIU

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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

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 Technology of ChinaIoT Standards and Application Key Laboratory of the Ministry of Industry and Information Technology of China

Nos.12172248120210021230202212132010No.22JCQNJC00780No.202306

2024

10.1007/s10483-024-3132-7

应用数学和力学(英文版)
上海大学

应用数学和力学(英文版)

影响因子：0.294
ISSN：0253-4827
年,卷(期)：2024.45(8)