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Shock and Vibration
Volume 17, Issue 3, Pages 269-283

A Study on the Hybrid Mount against Vibration and Shock for Naval Ships

Seok-Jun Moon,1 Jeong-Seok Kwak,2 Jung-Hoon Chung,1 Yong-Jin Ji,2 Jeong-Sik Yoon,3 Seung-Bok Choi,4 Hyun-Yup Lee,5 Woo-Jin Jung,6 and Dock-Jong Ki7

1Systems Eng. Research Div., Korea Institute of Machinery and Materials, Daejeon, 305-343, Korea
2Super Century, Co., Yuseong, Daejeon, 305-150, Korea
3Future Tech, Co., Busan, 614-100, Korea
4Smart Structures and Systems Lab., Inha University, Incheon, 402-751, Korea
5Naval Architecture & Ocean Eng., Chungnam National University, Yuseong, Daejeon, 305-764, Korea
6Agency for Defense Development, Jinhae, Kyeongsangnamdo, 645-016, Korea
7Dual Use Technology Center, Agency for Defense Development, Yuseong, Daejeon, 305-150, Korea

Received 23 March 2009; Revised 12 September 2009

Copyright © 2010 Hindawi Publishing Corporation. 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.


In naval ships, some methods or devices are acquired both to cut off the transmission of vibration from shipboard machineries and to protect them from external shock loading. One of the approaches is to install the passive mountings between machinery and a flexible supporting structure. More advanced performance has become necessary recently so far as at high frequencies in order to retain the stealth function of certain types of naval vessels.

For the purpose of this research, a novel hybrid mount for shipboard machinery installed on naval ships was developed. The mount is combined with a rubber mount and piezostack actuators. The rubber mount is one of the most popular and effective passive mounts to have been applied to various vibration systems to date. The piezostack actuator is featured by a fast response time, small displacement and low power consumption. Through a series of experimental tests conducted in accordance with MIL-M-17185A(SHIPS), MIL-M-17508F(SH), and MIL-S-901D which are US military specifications related to the performance requirements of the mount, it has been confirmed that the hybrid mount shows more effective performance for use in naval ships.