声无限元进展

声无限元在近几年来的发展尤为迅猛。相对于声学领域常用的边界元等其他方法，声无限元应用于声学问题的计算效率是极为优越的，因而适于求解很宽的声学频率和复杂声源形成的声场。介绍了声无限元的引出、原理和早期的声无限元，并根据提出方法的新颖性和受关注的程度，对近年来的声无限元统一归纳为五类，然后扼要介绍了各种方法的原理、所产生的问题以及参考文献中解决的办法。最后，对声无限元进行了前景展望。

ADVANCES OF ACOUSTIC INFINITE ELEMENT

The development of acoustic infinite element method is rapid in recent years. Compared to the other methods in exterior field besides boundary element method, the efficiency of acoustic infinite element is very superior. Thus this method can handle the full range of frequencies and structural complexities. Essentialize the introduction of acoustic infinite element method, principle and early acoustic infinite element method. Then the recent acoustic infinite element method as four types is classified by the novelty and attention and essentialize each method's principle, the problems and the answer. Finally, the expectation of acoustic infinite element method is described.