MICRO MECHANICAL ANALYSIS OF 3-D WOVEN COMPOSITES

A micro mechanical model is carried out to predict micro stresses and macro elastic properties of 3-D woven composites. A unit cell is composed of two phases. One is fiber yarn and the other is resin or fiber yarn in transverse. The additional shearing introduced by bending of fiber yarn is considered. The method to determine the microstructure is also discussed. This model is applied to the analysis of a 3-D woven graphite/epoxy composite. Micro stresses of the cell are studied, and then macro modulus is obtained by employing the average method. The predictions agree well with experimental results.

霍克思《红楼梦》英译底本析论

本文以霍克思《红楼梦》译本诸多参考底本为研讨对象,在前人研究基础上,引入霍克思《红楼梦》藏书(见存于威尔士国家图书馆的《霍克思文库》),比照霍克思《〈红楼梦〉英译笔记》和霍克思关于英译底本的说明文字(译本序、期刊论文、信函、访谈录),厘清霍译《红楼梦》前八十回所参考底本的确切数量,辨析确定诸本的具体版本信息,进而对霍译底本这一基础但却尚无定论的问题做出较为明确的回答。