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中文摘要：
利用一维设计理论,由能量守恒原理推导出穿孔宽带换能器在某一参考面的等效质量表达式,研究了等效质量随穿孔尺寸变化的关系.结果表明：等效质量与穿孔尺寸有关,但并不是孔的尺寸越大换能器等效质量越小.孔深不变时,等效质量随孔径的增加而减小.而孔径不变时,等效质量随孔深的增加先减小后增加.
英文摘要：
Using the one dimensional design theory and the energy conservation principle,the function of equivalent mass of the wide-band transducer with single hole is derived,and then the relationship between equivalent mass of the transducer and the hole＇s size is studied.The result shows that the equivalent mass of the transducer is related to hole＇s size,and the equivalent mass is not monotonously increasing with the size increasing.That is,the equivalent mass decreases with the increasing of the aperture when the depth of the hole is fixed.The equivalent mass decreases firstly and then increases with the increasing of the depth of the hole when the aperture is fixed.
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