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大尺寸大振幅折环设计与分析
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摘要
针对低频换能器需求,开展大尺寸大振幅半圆折环的设计与分析。建立了半圆折环理论模型,分析了轴向位移与折环截面半径、圆心角的关系,设定圆心角的基础上,得到折环截面半径随轴向位移的变化曲线,据此设计折环轴向可变位移为80mm。采用有限元方法分析了折环具体变形特性,并和按照经验设计的单个折环进行了对比,得到半圆折环变形相对平滑,证实其优越性。最后,介绍了大尺寸折环的制作工艺。
Based on the requirement of low-frequency transducer, the design and analysis of semicircle surround with large size and large amplitude were investigated in this paper. Firstly, The relations among axial displacement, sectional radius of surround and central angle were analysed by establishing theoretical model. Secondly, the relationship between surround sectional radius and axial displacement was obtained with constant central angle. Lastly, the axial displacement of surround was designed as 80 milimeter. The deformation of semicircle surround was researched by simulation and was compared with single surround. The results show that semicircle surround deformation is more smooth. Finally, the molding process was introduced.
引文
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