A modal analysis for the acoustic radiation problems, Ⅱ. Examples |
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作者姓名: | JIANGZhe |
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作者单位: | VibrationandNoiseResearchDivision,JiangsuUniversityZhenJiang212013 |
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基金项目: | National Natural Science Foundation of China(50075036) |
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摘 要: | The acoustic radiation modes and the field distribution modes describe the radiation patterns of a complex vibrating surface and the field distribution patterns respectively. The physical meanings of the acoustic radiation modes and the field distribution modes are revealed by numerical method. For a sphere body, a spinning body and a rectangular body, the geometrical patterns of the acoustic radiation modes and the field distribution modes are given. The radiation mode 1 represents the radiation behavior of a monopole radiator, the radiation modes 2 through 4 represent the radiation behavior of dipole radiators respectively, and the radiation modes 5 through 9 represent the radiation behavior of quadrapole radiators respectively. The acoustic radiation modes and the field distribution modes introduce the multi-pole decomposition method into discussion of the acoustic radiation problems.
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关 键 词: | 模式分析 声辐射模型 声场分布 复合振荡界面 几何参数 |
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