颗粒增强复合材料中界面破裂过程数值模拟研究  

NUMERICAL SIMULATION OF INTERFACIAL DEBONDING FAILURE PROCESS OF PARTICULATE REINFORCED COMPOSITES

作　　者：杨菊英[1] 张娟霞[2] 王大国[1] 马天辉[1] 

机构地区：[1]大连大学材料破坏力学数值试验研究中心,辽宁大连116622 [2]东北大学秦皇岛分校,河北秦皇岛066004

出　　处：《工程力学》2009年第1期18-24,共7页Engineering Mechanics

基　　金：国家自然科学基金项目(10672028,40638040)

摘　　要：运用材料真实破裂过程分析RFPA系统,模拟研究了颗粒增强复合材料中的界面破裂过程及其对材料宏观力学性能的影响。所研究的复合材料由基体、颗粒和界面等三相材料单元组成。单元的破裂同时采用拉伸和剪切强度准则进行判断。分别研究了单颗粒和复杂多颗粒分布的情形。模拟结果不仅在应力场分布方面与MARC和ABAQUS等软件的分析结果一致,对于帮助理解颗粒增强复合材料的破坏机理具有重要意义。RFPA（Realistic Failure Process Analysis） code was used to investigate the matrix-inclusion interfacial debonding process of particulate reinforced composites. In this numerical model, the particulate reinforced composite was assumed to be three-phase, namely, it is composed of matrix, particulate and the interfaces between them. The maximum tensile strain criterion and Mohr-Coulomb criterion were utilized as the damage threshold of the element. The single inclusion and multiple inclusions reinforced composites models were studied respectively. Numerical results of the stress distribution and the interface debonding type agree well with the results obtained from MARC and ABAQUS.

关 键 词：数值模拟 界面 颗粒增强材料 裂缝 破坏过程 

分 类 号：TU599[建筑科学—建筑技术科学]