CAJ | 학술논문

利用蜂窝结构面内受力特性，设计具有宏观正泊松比和宏观负泊松比效应的新型船用蜂窝隔振器，该新型隔振器也可作为基座使用。建立蜂窝隔振系统的有限元模型，通过模态分析和频响分析，探讨其减振效果。计算结果表明，新型隔振器的减振效果良好，在50 Hz以下频率范围内振级落差均能达到17 dB，具有较好的工程应用潜力。同时，探讨了隔振器面板分别采用钢与纤维复合材料时减振性能的差异，结果表明，采用复合材料面板的共振抑制效果更好。
이용봉와결구면내수력특성，설계구유굉관정박송비화굉관부박송비효응적신형선용봉와격진기，해신형격진기야가작위기좌사용。건립봉와격진계통적유한원모형，통과모태분석화빈향분석，탐토기감진효과。계산결과표명，신형격진기적감진효과량호，재50 Hz이하빈솔범위내진급락차균능체도17 dB，구유교호적공정응용잠력。동시，탐토료격진기면판분별채용강여섬유복합재료시감진성능적차이，결과표명，채용복합재료면판적공진억제효과경호。
Honeycomb structures are well-known for their unique in-plane loading characteristics on vi-bration reduction and shock absorption. In this paper,two types of composite hexagonal honeycomb vibra-tion isolators with positive and negative macro Poisson's ratios are designed respectively. The proposed iso-lators can also serve as mountings in certain applications. To investigate their actual properties,the finite element models for these honeycomb isolation systems are established,and their vibration reduction capa-bilities are demonstrated through both modal analysis and frequency response analysis. The results reveal a 17 dB difference in the vibration level when using the proposed isolators in the lower frequency domain from 1~50 Hz. Meanwhile,comparative studies are conducted for the isolators with either composite mate-rial panels or steel panels,and better mechanical performance on resonance restrain is observed for the for-mer ones.