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文摘
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针对细长型矢量水听器阵列的需求, 提出了一种基于曲折梁的细长型光纤激光矢量水听器高灵敏度换能结构. 根据弹性力学与振动理论, 给出了该结构的灵敏度和谐振频率, 并与现有的一些结构进行了对比, 归纳出影响灵敏度与谐振频率的关键因素, 探讨了在不降低谐振频率的前提下提高灵敏度的方法. 建立了该曲折梁结构的三维ANSYS有限元仿真模型, 由仿真结果修正理论分析中的参数得出, 该结构的光纤激光矢量水听器在250 Hz的谐振频率下可达81.3 pm/g的灵敏度. 在文中所考虑的4个结构中, 当谐振频率为250 Hz时, 该曲折梁结构具有最高的灵敏度 |
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其他语种文摘
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A slim fiber laser vector hydrophone with a sensitivity-enhanced flexed beam configuration was presented to satisfy the demands of the slim vector hydrophone array. The sensitivity and resonant frequency of this configuration was calculated by the elastic mechanics and vibration theory. Compared with some existing configurations, the key factor that influences the sensitivity and resonant frequency was found out and some discussion on enhancing the sensitivity without reducing the resonant frequency was carried out. A 3D finite element method (FEM) simulation and analysis of the configuration were performed in ANSYS. The simulation result revises the factor in the theoretical analysis and gives a recalculated sensitivity of 81.3 pm/g with a resonant frequency of 250 Hz of the novel fiber laser vector hydrophone. The flexed beam configuration is shown to give the highest sensitivity under resonant frequency of 250Hz of the four designs considered in this paper |
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来源
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红外与激光工程
,2011,40(3):463-466,491 【核心库】
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关键词
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光纤激光器
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矢量水听器
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灵敏度
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谐振频率
;
有限元分析
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地址
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中国科学院半导体研究所, 中国科学院光电系统实验室, 北京, 100083
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1007-2276 |
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学科
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机械、仪表工业 |
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基金
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国家863计划
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中国科学院知识创新工程青年人才领域前沿项目
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文献收藏号
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CSCD:4177267
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