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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.
[1] ［1］Morse P M, Ingard K U 1968 Theoretical Acoustics (New York: McGraw-Hill) p315.
[2] ［2］Zhang H L 2007 Theoretical acoustics (Beijing: Higher Education Press) p231 (in Chinese) ［张海澜 2007 理论声学 (北京: 高等教育出版社) 第231页］
[3] ［3］Vojnovic M 2005 Applied Acoustics 66 481
[4] ［4］Van Buren A L 1971 J. Acoust. Soc. Am 51 705
[5] ［5］Dalmont J P 2001 J. Sound. Vib. 244 505
[6] ［6］Shao W, Kmechefske C 2005 J. Sound. Vib. 286 363
[7] ［7］Robey D H 1955 J. Acoust. Soc. 27 706
[8] ［8］Wang Z H, Hu Y M, Meng Zh, Ni M 2008 Acta Phys. Sin. 57 7022 ［王泽锋、 胡永明、 孟洲、 倪明 2008 27 706］
[9] ［9］Arase E M 1964 J. Acoust. Soc. Am. 36 1521
[10] ］Burneet D S, Soroka W W 1972 J. Acoust. Soc. Am. 51 1618
[11] ］Lee J, Seo I 1996 J. Sound. Vib. 198 299
[12] ］Gallego-Juárez J A, Rodriguez-corral G, Gaete-Garreton.L 1978 Ultrasonics 11 267
[13] ］Gallego-Juárez J A, Rodriguez-Corral 2000 Ultrasonics 38 331
[14] ］Gallego-Juárez J A 2002 Ultrasonics 40 889
[15] ］Porter D R 1964 J.Acoust. Soc. Am. 36 1154
[16] ］He Z y, Zhao Y F 1981 Theoretical basis ofr acoustics (Beijing: National Defense Industry Press) p266 (in Chinese)［何祚镛、 赵玉芳编 1981 声学理论基础 (北京: 国防工业出版社), 第266页］
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[1] ［1］Morse P M, Ingard K U 1968 Theoretical Acoustics (New York: McGraw-Hill) p315.
[2] ［2］Zhang H L 2007 Theoretical acoustics (Beijing: Higher Education Press) p231 (in Chinese) ［张海澜 2007 理论声学 (北京: 高等教育出版社) 第231页］
[3] ［3］Vojnovic M 2005 Applied Acoustics 66 481
[4] ［4］Van Buren A L 1971 J. Acoust. Soc. Am 51 705
[5] ［5］Dalmont J P 2001 J. Sound. Vib. 244 505
[6] ［6］Shao W, Kmechefske C 2005 J. Sound. Vib. 286 363
[7] ［7］Robey D H 1955 J. Acoust. Soc. 27 706
[8] ［8］Wang Z H, Hu Y M, Meng Zh, Ni M 2008 Acta Phys. Sin. 57 7022 ［王泽锋、 胡永明、 孟洲、 倪明 2008 27 706］
[9] ［9］Arase E M 1964 J. Acoust. Soc. Am. 36 1521
[10] ］Burneet D S, Soroka W W 1972 J. Acoust. Soc. Am. 51 1618
[11] ］Lee J, Seo I 1996 J. Sound. Vib. 198 299
[12] ］Gallego-Juárez J A, Rodriguez-corral G, Gaete-Garreton.L 1978 Ultrasonics 11 267
[13] ］Gallego-Juárez J A, Rodriguez-Corral 2000 Ultrasonics 38 331
[14] ］Gallego-Juárez J A 2002 Ultrasonics 40 889
[15] ］Porter D R 1964 J.Acoust. Soc. Am. 36 1154
[16] ］He Z y, Zhao Y F 1981 Theoretical basis ofr acoustics (Beijing: National Defense Industry Press) p266 (in Chinese)［何祚镛、 赵玉芳编 1981 声学理论基础 (北京: 国防工业出版社), 第266页］
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