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Complexity of the acoustic radiation and sound radiation efficiency of decoupling

odstothenumericalsolutionsofsomeexte-riorboundaryvalueproblems. ProceedingsofRoyalSo-cietyofLondonA, 1971; (323) :201-21O14GaulL,[link widoczny dla zalogowanych], WagnerM,[link widoczny dla zalogowanych], WenzelW,[link widoczny dla zalogowanych], DumontN. Numericaltreatmentofacousticproblemswiththehybridboundaryelementmethod. Internationa1Journa1ofSolidsandStructures, 2001: (3 Cool

:1878-188815SubrataMukherjee. CPVandHFPintegralsandtheirapplicationsintheboundaryelementmethod. Interna-tionalJournalofSolidsandStructures, 2000; (37) :6623-663416ZaiYouYan, KinChewHuang,[link widoczny dla zalogowanych], HuiZheng. Solvingthehyper - singularboundaryintegralequationinthree - dimensionalacousticsusingaregularizationrelationship. J. Aoust. Soc. Am. , 2003; 113 (5) :2374-2683AnalysisofAcousticalRadiationDecouplingandAcousticalRadiationEfficiencyofComplexStructureZhaoZhigaoHuangQibai (CollegeofMechanicalScienceandEngineering, HuazhongUniversityofScienceandTechnology,[link widoczny dla zalogowanych], Wuhan, 430074, China) Abstract: Atheoreticalmethodtosolveacousticalradiationmodesandacousticalradiationefficiencyofcomplexstructurebyaboundaryelementmethodandacousticalradiationtheoryisposedinthispaper. TheacousticalradiationpowerisexpressedasaHermitianquadraticform, whiletheradiationmodesisdeterminedbygeneraleigenvaluedecomposing, andthentheradi-ationefficiencyiscomputedviatheorthodoxyofradiationmodeswithregardstoimpedancematrixandaveragevelocityma-trix; lastly, thevalidityofthemethodisprovedbypulsatingsphereandradiatingcubewithanalyticalresults. Keywords: acousticalradiation; boundaryelement; radiationmode; radiationefficiency first author : Zhao high , male , Ph.D. , in August 1976 students. Phone : (027) 8754391; (027) 62590273; E-mail: zzgrnr @ 163. tom

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