Abstract No.F180212-123

Author name(s): Jongho LEE, Daeseung CHO

Company: Pusan National University, Korea

This paper describes a numerical method to analyse acoustic radiation efficiency of one side-wetted Mindlin plate with simply supported boundaries and proposes its new approximate formula applying infinite Mindlin plate theory considering fluid loading effect. The proposed approximate formula can separately consider monopole, corner and edge mode regions below critical frequency and critical region above the critical frequency, in which the critical frequency is determined by Mindlin plate theory considering fluid loading effect. To verify the proposed approximate formula, acoustic radiation efficiencies obtained by the numerical analysis and the proposed and existing formulas are compared and discussed.

KEY WORDS: acoustic radiation efficiency; acoustic radiation impedance; approximate formula; critical frequency; fluid loading effect; mindlin plate theory

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