论文部分内容阅读
1 前言 在分析动力无限介质-结构相互作用的直接法中,人工边界以内的介质,用譬如象有限元来离散。为了表示没有被明显模拟的从人工边界直到无限远处的那部分介质的影响,必须在人工边界上列出合适的边界条件。这一相互作用的力-位移的严格关系,在空间和时间上都是完整的。已经建立了几种叫做透射边界的方法。由它们列出的较为有效且吸收能力很强的近似关
1 Introduction In the direct method of analyzing infinite media-structure interactions of power, the medium within artificial boundaries is discretized by means of, for example, finite elements. In order to show the effect of that part of the medium from the artificial boundary up to infinity that is not clearly simulated, a suitable boundary condition must be listed on the artificial boundary. The strict relationship between force and displacement of this interaction is complete in space and time. Several methods have been established called transmissive boundaries. They are listed by the more effective and highly absorptive approximation off