摘要
涂层隐身是水下目标声隐身的一个主要方法。针对水雷的特点,本文研究了水下目标覆盖薄吸声涂层的高频反射特性。根据垂直入射时多层介质的声传播理论,利用多层均匀复合结构的传递矩阵,研究了水中多层结构的高频反射特性,通过M atlab编程仿真了高频下覆盖薄吸声涂层时吸声涂层的厚度,杨氏模量,损耗因子对反射系数的影响。最后对吸声涂层的厚度对反射系数的影响进行了试验研究。结果表明,在高频范围目标表面覆盖薄吸声涂层可以有效减小目标回波信号强度,提高其声隐身能力。
Coating process is a main means to increase the stealth performance of underwater target.In this paper,based on the theory of wave transmit guide,the sound high frequency reflection characteristic of underwater multi-layered composite structure is discussed using transmission matrix.By numerical calculation with matlab,the sound high frequency reflection characteristic of underwater multi-layered composite structure covered with sound absorbing material influenced by material performance,including complex module,thickness and density,is discussed.The high frequency reflection experiment was performed upon the thickness of absorbing material.The result indicates that the stealth performance of underwater target can be increased effectively through cover sound absorbing material.
出处
《舰船科学技术》
2010年第5期52-55,共4页
Ship Science and Technology
关键词
传递矩阵
吸声涂层
反射系数
高频
transmission matrix
absorbing material
high frequency
