【摘要】 对水声构件的声性能进行有限元仿真研究,是因为水声构件的声性能不仅由材料本身的物理参数所决定,而且与其内部空腔形状与分布有关。通过反射波与入射波形成的驻波场声压可以直接计算出水声构件的吸声系数。对多种样品进行仿真与测量,两者结果较为一致。该法不受模型结构复杂性的限制,具有费时少、精度高的特点,为消声瓦等水声构件的声性能预报提供了保证。是预报水声构件声性能的一种便捷工具。更多还原

【Abstract】 Acoustic performances of underwater acoustic structure are studied based on finite element me-thod,and results are determined directly by deriving the standing wave data formed by incident wave and reflected wave. Many examples are simulated and tested,and computer simulation results as well as mea-sured data are more consistent. This method has lower computational cost,high-resolution and no limita-tion caused by the complexity of modal structure.So it could a easy way of predicting acoustic perfor-mances of anechoic coating and other underwater acoustic parts.更多还原