%0 Journal Article
%T 弹性模量对柔性仿生鱼尾振动行为的影响<br>Research of Elastic Modulus for Vibration Behavior of Flexible Bionic Fish Tail
%A 官源林
%A 李华峰
%A 杨熙鑫
%A 狄思思
%J 振动.测试与诊断
%D 2015
%R 10.16450/j.cnki.issn.1004-6801.2015.01.002
%X 针对采用各向同性材料为基板的仿生鱼尾刚度大、变形小的情况，研究基板材料弹性模量对于柔性复合型仿生鱼尾振动行为的影响。首先，通过使用粗压电纤维复合材料(macro fiber composite，简称MFC)作为驱动器，设计了一种柔性仿生鱼尾结构，运用COMSOL Multiphysics有限元软件模拟了具有相同泊松比和密度的基体材料在不同弹性模量下的鱼尾振动情况，得出鱼尾摆动位移与弹性模量间的极值关系；然后，对比此种弹性模量下各向同性材料与各向异性材料，得到各向异性[HJ]材料适合作为基体材料的结论；最后，根据仿真结果制备出各向异性基体材料，与MFC相结合得到柔性鱼尾，再对其进行振动性能测试实验。实验结果验证了数学模型的合理性及设计的可行性。<br>According to the large stiffness and small deformation for bionic fish with isotropic materials as substrates, the problem of vibration behavior is studied on the elasticity modulus of the substrate material for the influence of the flexible composite bionic fish tail. First, a flexible bionic fish tail structure driven by a macro fiber composite(MFC) is designed. Then, based on substrates with the same values of poisson ratio and density and different elastic moduli, the tail′s vibration is simulated with COMSOL software, and the extreme value between tail swing displacement and the elastic modulus is obtained. Further, when compared with the elastic modulus of the isotropic material, the anisotropic material is suitable for the substrate material. Finally, the flexible tail is completed with anisotropic substrate materials manufactured with MFC. The feasibility of the design and the rationality of the mathematical model are verified with experimental measurements of the vibration performance.
%K 粗压电纤维复合材料
%K 玻璃纤维复合材料
%K 弹性模量
%K COMSOL有限元软件&lt
%K br&gt
%K macro fiber composite
%K glass fiber composite
%K elasticity modulus
%K COMSOL software
%U http://zdcs.nuaa.edu.cn/ch/reader/view_abstract.aspx?file_no=201501002&flag=1