考虑界面层效应的纤维增强陶瓷材料的力学模型  

Mechanics model in consideration of interface layer effects on fiber reinforced ceramic composites

作　　者：蔡乾煌[1] 邹毓强 

机构地区：[1]清华大学工程力学系

出　　处：《清华大学学报（自然科学版）》1996年第10期111-116,共6页Journal of Tsinghua University(Science and Technology)

基　　金：国家自然科学基金项目

摘　　要：在弹性圆筒理论和剪滞模型基础上提出了考虑界面相与界面层效应的力学简化模型。据此对纤维增强陶瓷复合材料完成了Ｉ型加载条件下的应力分析，它有以下特点：①引进界面层，各项分析所得结果均含有界面层材料性能及几何参量等信息，因而能更好地用于材料设计与界面调控工艺；②不仅给出界面剪应力，还可给出界面正应力（或剥离力），因而更适用于分析界面分离，界面脱粘。One simplified mechanics model based on elastic cylinder theory and shear lag model is proposed. It can consider interface layer and interface phase effects on mechanical properties of fiber reinforced ceramic composites. According to this model, stresses analysis is made under mode I loading condition for the aligned fiber reinforced ceramic composites. It has some improvement on these aspects: ① it induces the interface layer, and the stress solution contains some informations about material properties and geometrical variables of interface layer. Therefore, it can provide better service for material design and interface control technique; ② it can give interface pressure (this may be peeling stress) in addition to interface shear stress, so it is more applicable to analyze such problems as interface separating, matrix critical cracking stress and toughening by fiber bridge.

关 键 词：纤维增强陶瓷 应力分析 力学模型 界面层效应 

分 类 号：TQ174.758[化学工程—陶瓷工业]