IJBTT

A Study on the Response Characteristics of a Smart Seismic Isolation Device under Earthquake Excitation

A Study on the Response Characteristics of a Smart Seismic Isolation Device under Earthquake Excitation
	© 2025 by IJETT Journal
	Volume-73 Issue-9
	Year of Publication : 2025
	Author : Yu-Jin Jeong, Min-Woo Kim, Dong-Hwan Lee, Hyoung-Woo Lee
	DOI : 10.14445/22315381/IJETT-V73I9P117

How to Cite?
Yu-Jin Jeong, Min-Woo Kim, Dong-Hwan Lee, Hyoung-Woo Lee,"A Study on the Response Characteristics of a Smart Seismic Isolation Device under Earthquake Excitation", International Journal of Engineering Trends and Technology, vol. 73, no. 9, pp.194-201, 2025. Crossref, https://doi.org/10.14445/22315381/IJETT-V73I9P117

Abstract
During earthquakes, damage to Non-Structural Components (NSCs) inside buildings can cause critical system failure and human casualties, emphasizing the growing need for protective measures. In particular, if damaged, key equipment like telecommunication cabinets-though not structural-can lead to significant social and economic losses, requiring advanced vibration isolation technology. This study proposes a smart seismic isolation device for protecting non-structural components. Traditional base isolation systems mainly target entire structures and have limitations in controlling residual vibrations that occur above the natural frequency. The smart isolation device combines an LM guide-based isolation structure with an MR damper, allowing dynamic response control under external excitation. Finite Element Analysis (FEA) is performed to analyze vibration response characteristics with and without isolation and under varying damping ratios. The vibration reduction performance for indoor equipment is evaluated. This study suggests the applicability of smart seismic technology and its potential contribution to enhancing seismic performance in disaster response systems and securing the stability of critical NSCs.

Keywords
Seismic isolation technology, Smart isolation device, LM guide, MR damper, Vibration isolation.

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