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Shock and Vibration
Volume 2018 (2018), Article ID 8963491, 11 pages
https://doi.org/10.1155/2018/8963491
Research Article

Design and Analysis of a New Magnetorheological Damper for Generation of Tunable Shock-Wave Profiles

1Division of Mechanical and Automotive Engineering, Kongju National University, Chungnam 31080, Republic of Korea
2Department of Mechanical Engineering, Smart Structures and Systems Laboratory, Inha University, Incheon 22212, Republic of Korea

Correspondence should be addressed to Seung-Bok Choi; rk.ca.ahni@kobgnues

Received 26 August 2017; Accepted 20 December 2017; Published 18 January 2018

Academic Editor: Daewon Kim

Copyright © 2018 Jong-Seok Oh et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A new impact testing system with an integrated magnetorheological (MR) damper is proposed, and its dynamic characteristics are analyzed. The testing system consists of a velocity generator, impact mass, test mass, spring, and MR damper. In order to tune the dual shock-wave profile, a dynamic model was constructed, and the appropriate design parameters of the MR damper were then determined to produce the required damping force. Following this, an impact testing system was constructed to evaluate the design analysis and field-dependent dual shock-wave profiles. The experimental results of impact test showed that the dual shock-wave profile can be altered by changing the intensity of the magnetic field.