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.
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.
出处
《华中理工大学学报》
CSCD
北大核心
1993年第1期163-168,共6页
Journal of Huazhong University of Science and Technology
基金
湖北省自然科学基金资助项目
关键词
声辐射
噪声预测
振动
箱体结构
acoustic radiation
noise prediction
integral equation
finite element method
boundary element method
