摘要
应用声传递矩阵法,对水下典型复合层吸声结构在全入射角下的低频声学特性进行了研究,推导了多层结构的反射、透射系数的计算公式,并用数值方法进行求解,根据计算结果具体分析了材料参数、背衬形式、声入射角度对结构声学特性的影响。通过分析可以看出,水下吸声层的应用效果不仅取决于自身的材料特性,还与背衬结构及入射角度有很大关系。
According to the transferring matrixes of multiple-layer structures,the sound field of typical multiple-layer structures in sound oblique incidence,located between water and air,was investigated.The sound reflection and transmission coefficients were obtained,and how parameters of materials,formats of hinder layers and angles of incidence affect sound field in the structures was analyzed by means of numeric computation.By the analysis,it could be seen clearly that all the parameters had a tight tie with the effect of sound absorption of the multiple-layer structures.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2008年第6期105-109,共5页
Journal of Wuhan University of Technology
关键词
水声
吸声材料
多层结构
传递矩阵
斜入射
underwater acoustics
sound absorbing materials
multiple-layer structures
transferring matrix
oblique incidence
