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Structural acoustic radiation controlling is very important for noise reduction. To minimize the acoustic radiation of folded plates, a topography optimization method is proposed in this paper. In the proposed method, the structural vibration characteristics of a folded plate structure are analyzed by using of FEM. Then the structural acoustic radiation is analyzed by using Helmholtz integral method. The natural frequency of the first mode shape of the folded plate structure is taken as thedoi:10.12720/joace.3.3.183-190 fatcat:jepxxf3zdzau3bgg7g2rhibh54