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1·The radiation damping matrix of the infinite element is derived.

推导了辐射无限元的辐射阻尼矩阵。

2·The method can simulate not only the radiation damping of semi-infinite soil, but also the elasticity recovery capacity of the far field media on the boundary.

该方法不但可以较好地模拟半无限地基的辐射阻尼，也能模拟远场地球介质的弹性恢复性能。

3·The analysis method proposed can take into consideration of the effects of water surface gravity wave, water compressibility, and radiation damping at up-stream of reservoir.

所建议的分析方法能够考虑表面重力波的影响、水体可压缩性、水库上游辐射阻尼等各种因素作用。

4·Under each water level, the foundation radiation damping brings overall reduction of the dam body's earthquake responses, while having no noticeable effect on the response patterns.

对所有水位，地基辐射阻尼都带来坝体地震响应的全面降低，但不影响反应的总体规律。

5·Artificial damping boundary is adopted in seismic model test of arch dam on shaking table to simulate the radiation damping effect due to energy dissipation in infinitive foundation.

在振动台上进行拱坝动力模型试验时，设置人工阻尼边界，以模拟地震时地震动能量向无限远域地基逸散的地基幅射阻尼效应。

6·The experiment of sound radiation efficiency and engine noise test were carried out when the engine was equipped with thin-wall components with free and compound damping.

采用表面振动法进行了柴油机表面辐射噪声的诊断，并对附加自由和复合阻尼的薄壁件进行了声辐射效率试验研究和整机试验。

7·Through the border conditions of damping layer combined with the shell the coupled oscillation equation was solve, and radiation sound field expression was shown using the shell displacements.

通过阻尼层与壳体作用的边界条件求解流固耦合振动方程，解得辐射声场的表达式。

8·Numerical results showed that if the shell was partially covered wi th a damping layer, its sound radiation would be greater than that of the ba re shell due to leak effect.

结果表明圆柱壳部分覆盖阻尼层后，由于声漏效应，壳体声辐射与光壳相比会增强。

9·Other types of damping include electrical resistance, radiation, and magnetic damping.

其它形式的阻尼包括电阻、辐射阻尼和磁阻尼。

10·Therefore, the randomness of viscoelastic damping layer obviously influences the resonant response and sound radiation of structure.

因此粘弹性阻尼层的随机性对抑制结构共振响应和声辐射的影响是较大的。