마운트편심과 기진력편심이 함정탑재장비의 진동특성에 미치는 영향 = Effects of Mount Eccentricity and External Force Eccentricity on the Vibration Characteristics of Naval Shipboard Equipments Supported by Elastic Mounts

다국어 초록 (Multilingual Abstract)

A rigid body supported by 4 linear springs has been analyzed, to investigate the effects of eccentricities on the vibration responses for naval shipboard equipments supported by elastic mounts. Considering mount eccentricity (the location of the center of spring reaction forces relative to the mass center) and excitation force eccentricity (the location of the center of the excitation force relative to the mass center), the vibration phenomena have been formulated and discussed. Also, the effects of the eccentricities have been evaluated and discussed for the elastically mounted naval shipboard equipment. Results show that the mount eccentricity has little effects on the structure-borne noise above the natural frequency of the system, however the excitation force eccentricity has significant effects all over the frequency range.

참고문헌 (Reference)

1 지용진, "충격하중하의 탑재장비 프레임 지지구조의 탄성마운트 배치 최적화에 관한 연구" 대한조선학회 52 (52): 298-304, 2015

2 최수현, "선내 탑재 장비용 마운팅 시스템의 진동특성 평가에 관한 연구" 대한조선학회 39 (39): 8-81, 2002

3 한형석, "구조전달소음 최소화를 위한 함정탑재장비의 베이스 설계" 한국소음진동공학회 25 (25): 432-439, 2015

4 Peicheng, S., "Research on displacement transfer characteristics of a new vibration-isolating platform based on parallel mechanism" 2017 : 2017

5 Gatti, G., "On the response of a harmonically excited two degree-of-freedom system consisting of a linear and a nonlinear quasi-zero stiffness oscillator" 329 (329): 1823-1835, 2010

6 Naval Sea Systems Command, "MIL-STD-740-2 (SH)structure-borne vibratory acceleration measurements and acceptance criteria of shipboard equipment"

7 Wang, J, "Indirect inverse substructuring method for multibody product transport system with rigid and flexible coupling" 2015 : 2015

8 Le, T.D., "A vibration isolation system in low frequency excitation region using negative stiffness structure for vehicle seat." 330 (330): 6311-6335, 2011