| 用FEM-BEM法预测箱型振动构件的声场辐射 |
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| 引用本文： | 余兴倬,方新,周禹.用FEM-BEM法预测箱型振动构件的声场辐射[J].华中科技大学学报(自然科学版),1993(1). |
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| 作者姓名： | 余兴倬 方新 周禹 |
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| 作者单位： | 华中理工大学机械工程一系
(余兴倬，方新)，华中理工大学机械工程一系(周禹) |
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| 基金项目： | 湖北省自然科学基金资助项目 |
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| 摘 要： | 以Helmholtz积分法为基础,应用有限元(FEM)和边界元(BEM)相结合的方法预测振动构件的辐射声场,推导出适合于计算机应用的预测公式,该预测公式结合补充方程对任意的频率都有效.对箱型结构的振动辐射声场进行了预测和实测,实测结果表明,该预测方法是有效的.
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| 关 键 词： | 声辐射 噪声预测 积分方程 有限元法 边界元法 |
Prediction of the Acoustic Field of Box Type Vibrating Bodies by FEM-BEM |
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| Yu Xingzhuo Fang Xing Zhou Yu.Prediction of the Acoustic Field of Box Type Vibrating Bodies by FEM-BEM[J].JOURNAL OF HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY.NATURE SCIENCE,1993(1). |
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| Authors: | Yu Xingzhuo Fang Xing Zhou Yu |
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| Institution: | Yu Xingzhuo Fang Xing Zhou Yu |
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| Abstract: | A new method based on the Helmholtz integral equation is presented to predict the a-coustic radiation field of vibrating bodies by combining the finite element method (FEM) with boundary element method (BEM). The predicting formulation is valid for all frequencies if an extra equation is added. The acoustic field of the box type vibrating bodies has been calculated and measured. The effectiveness of the method has been proved by test results. |
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| Keywords: | acoustic radiation noise prediction integral equation finite element method boundary element method |
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