%0 Journal Article
%T Calculation method of the radiation impedance of stepped circular plate<br>弯曲振动阶梯圆盘辐射阻抗的计算方法
%A He Xi-Ping
%A <br>贺西平
%J 物理学报
%D 2010
%I 
%X Radiation impedance is an important parameter for evaluation of acoustic conversion efficiency of a sound and vibration system. The high power flexural vibration circular plate with stepped thickness has impartant applications in fluid, especially in air due to its large radiation area. The classical theory has difficulty in calculating the radiation impedance of the stepped circular plate due to the fact that the radiation surface is not coplanar, so the domain of integration is difficult to choose. From the point of view of radiation acoustic power, and based on superposition principle, a method is proposed to calculate the radiation impedance of a stepped circular plate in this work. As an example, calculation of the radiation impedance of a circular plate with one step is given.
%K stepped circular plate
%K radiated power
%K radiation impedance
%K superposition principle<br>阶梯圆盘，
%K 辐射功率，
%K 辐射阻抗，
%K 叠加原理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=983B7BD417A357B5270F4FF022AB1BF3&yid=140ECF96957D60B2&vid=6AC2A205FBB0EF23&iid=94C357A881DFC066&sid=ED5187E3A7A801FF&eid=C3286A8EE2834E2A&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=16