Vibration Suppression of a Cantilever Plate Using Magnetically Multimode Tuned Mass Dampers

Abstract

For a few decades, various methods of suppressing structural vibration have been proposed. The present study proposes and exploits an effective method of suppressing the vibration of cantilever plates similar to the solar panels of a satellite. Magnetically tuned mass dampers (mTMDs) are a tuned mass damper (TMD) with eddy current damping (ECD). We introduce the mTMD concept for the multimode vibration suppression of the cantilever plate. The design parameters of the mTMD are determined based on the parametric study of the theoretical four-degree-of-freedom model, which was derived for a cantilever plate with TMDs. Two TMDs are optimized for the first bending mode and first torsion mode of the plate, and they are verified analytically and experimentally. To increase the damping performance of the TMDs, ECD is introduced. Its damping ratios are estimated analytically and verified experimentally.

Studi Eksperimental Pengaruh Panjang Penyangga Magnet pada Getaran Batang dengan Eddy Current Tuned Mass Damper

“…Yang mana pada struktur tersebut menggabungkan sistem Eddy Current Damper (ECD) dengan Tuned Mass Damper (TMD). Dari penggabungan kedua system tersebut diketahui bahwa ukuran celah antara magnet dengan konduktor menjadi parameter yang penting untuk menentukan rasio redaman [2], [3]. Pada penelitian yang lain, ECTMD mampu digunakan untuk meredam pengaruh perpindahan maksimum yang disebabkan oleh adanya gelombang seismic pada sebuah struktur [4]- [6].…”

“…Pada jurnal Jae-Sung Bae, getaran di reduksi pada sistem batang kantiliver horizontal dengan Dynamic Vibration Absorber menggunakan peredam eddy current [2]. Pelat yang digunakan pada jurnal ini adalah pelat tembaga.…”

“…Penelitian tentang variasi panjang batang kantilever dan variasi kekuatan magnet yang digunakan pada system ECTMD masih belum banyak dilakukan. Penelitian yang sudah dilakukan hanya sebatas perbandingan bentuk beam yang digunakan yaitu bentuk pelat dan batang [2], [3]. Oleh karena itu, dilakukan studi pengaruh variasi panjang batang kantilever penyangga magnet terhadap respon getaran batang kantilever utama dengan ECTMD secara eksperimental di penelitian ini.…”

Review of Passive Electromagnetic Devices for Vibration Damping and Isolation

“…Last but not least, EDC can be found in manufacturing applications [37], specifically in robotic milling. is type of machining has become a new choice for machining of large complex structure parts.…”

Design of eddy current dampers for vibration suppression in robotic milling

“…Vibration suppression by improving the damping properties of the structures may be a better way, and this can be realized by attaching eddy current dampers (ECDs) onto the structure that need to be damped. Bae and colleagues [15][16][17][18][19][20] studied the theory of eddy current damping and verified its effectiveness experimentally on vibration suppression of flexible beams. Yang et al 21,22 designed an ECD for vibration suppression of a thin-walled workpiece and achieved promising vibration reduction performance.…”