船用新型蜂窝隔振器减振性能分析

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。

Performance Analysis of a Novel Marine Honeycomb Vibration Isolator

Honeycomb structures are well-known for their unique in-plane loading characteristics on vibration reduction and shock absorption. In this paper，two types of composite hexagonal honeycomb vibration isolators with positive and negative macro Poisson's ratios are designed respectively. The proposed isolators 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 capabilities 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 material panels or steel panels，and better mechanical performance on resonance restrain is observed for the former ones.