The effect of main factors, such as the thickness of the model, the distribution of symmetric forces excited on the model, and different kind of ribs, on the radiated sound power has been analyzed.
对于影响围壳模型辐射声功率的主要因素，比如围壳模型厚度、不同的加肋情况和激励力分布等，进行研究分析其对围壳辐射声功率的影响。
The acoustic radiation resistance matrix is combined with the velocity vector on a vibration surface to predict the total sound power radiated from the structure.
利用声辐射阻力矩阵和振动面上的速度矢量预报了结构声辐射的总功率。
Finally figures of direction coefficient of sound pressure level are given out. Then using these figures the relationship between sound power level and sound pressure level radiated by a fan in...
利用这些图就可方便地得到吸气管道内风机辐射声功率级和声压级的关系。
The acoustic radiation resistance matrix is combined with the velocity vector on a vibration surface to predict the total sound power radiated from the structure.
基于声辐射模态分析，建立了外部场压和结构表面振动速度之间关系的传递矩阵。
The acoustic radiation resistance matrix is combined with the velocity vector on a vibration surface to predict the total sound power radiated from the structure.
基于声辐射模态分析，建立了外部场压和结构表面振动速度之间关系的传递矩阵。
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