本文首先采用数值仿真方法研究了复合材料筏架材料模量、材料阻尼、筏架各面板厚度等对筏架减隔振性能的影响，研究表明：筏架材料模量和阻尼提高有利于提高减隔振效果，上面板厚度增大对筏架高频隔振具有较明显的效果，而肋板厚度增大对中低频段隔振具有明显的效果，改变下面板厚度对筏架隔振效果相对较小。然后基于该仿真分析结论，进行某型复合材料筏架结构设计及成型，并通过振动试验验证了结论的正确性。
A numerical simulation method were employed to investigate the effects of the elastic moduli, material damping parameters and thickness for every panel of the composite raft frame on the vibration isolation. The results indicate that increasing the modulus and damping parameters of the composite favors vibration reduction performance, increasing the upper panel thickness favors high frequency vibration reduction performance of composite foundation, and increasing ribbed panel thickness favors high frequency vibration reduction performance of composite foundation. Vibration reduction effect is relatively small by changing lower panel thickness. According to the simulation results, one kind of structure type of composite foundation was designed and fabricated. At last, the correctness of simulation results was verified by the vibration test.
2018,40(4): 58-62 收稿日期：2017-07-04
DOI：10.3404/j.issn.1672-7649.2018.04.012
分类号：TB322
作者简介：康逢辉(1985-),男,硕士,工程师,研究方向为舰船复合材料结构设计
参考文献：
[1] MADHAV M R, JAWAID S M AH. Behavioul of composite rigid caisson foundation[J]. Geotechnical Engineering, 2008, 39(2):105-111
[2] 赵树磊, 郭万涛, 吴医博. 复合材料基座减振性能试验研究[J]. 材料开发与应用, 2009, 24(4):8-13.ZHAO Shu-lei, GUO Wan-tao, WU Yi-bo. Experimental study on vibration reduction of composite stand[J]. Development and Application of Materials, 2009, 24(4):8-13.
[3] 周红兵. 基础阻抗对筒型复合材料基座减振机制影响规律研究[J]. 材料开发与应用, 2011, 26(5):54-59.ZHOU Hong-bing. Research of damping effect of base impedance on cylindrical composite foundati[J]. Development and Application of Materials, 2011, 26(5):54-59.
[4] 毛亮, 梅志远, 罗忠. 夹芯复合材料基座结构设计与强度分析[J]. 海军工程大学学报, 2008, 20(1):98-102MAO Liang, MEI Zhi-yuan, LUO Zhong. Structure design and strength analysis of foundation structure of sandwich composite[J]. Joural of Naval University of Engineering, 2008, 20(1):98-102
[5] 罗忠, 朱锡, 简林安. 三明治夹芯基座阻抗阻尼减振特性分析[J]. 哈尔滨工程大学学报, 2009, 30(9):980-985.LUO Zhong, Zhu Xi, JIAN Lin-an. Isolation of vibration by the impedance and damping of a composite sandwich base[J]. Journal of Harbin Engineering University, 2009, 30(9):980-985.
[6] 杨德庆, 陈静, 郭万涛, 等. 复合结构减振优化设计模型[J]. 噪声与振动控制, 2011, 31(3):24-28.YANG De-qing, CHEN Jing, GUO Wan-tao, et al. Study on mathematical models of optimization design for vibration reduction of hybrid steel-composite structure[J]. Nosie And Vibration Control, 2011, 31(3):24-28.
