HGB周期增强复合材料有效性能及界面应力场数值分析  

Numerical Study of Effective Properties and Interface Stress Field of HGB Periodically Reinforced Composite

作　　者：姜鑫[1] 李慧剑[1] 徐海涛 左洪平 

机构地区：[1]燕山大学建筑工程与力学学院工程力学系,河北秦皇岛066004 [2]秦皇岛市第三建筑工程公司,河北秦皇岛066004

出　　处：《塑料工业》2012年第1期82-85,共4页China Plastics Industry

基　　金：河北省自然科学基金资助项目(E2011203230);河北省高等学校科学研究计划(2010166)

摘　　要：采用周期和对称理论将空心玻璃微珠(HGB)周期增强环氧树脂复合材料模型简化为立方体元,利用有限元方法,分析了微珠填充比、壁厚两个因素对材料宏观有效弹性模量及泊松比等弹性常数的影响规律,并研究了材料界面应力场分布情况。研究发现,材料宏观有效弹性模量及泊松比均与微珠填充比、壁厚密切相关;它们之间的关系遵循提出的Φ-t等效原理。并得出界面脱黏现象主要是由界面处径向应力造成的。Periodic and symmetric theories were used to simplify hollow glass bead （HGB） periodically- reinforced composite model into cell cubes. The influence rule of packing ratio and wall thickness on the macroscopically effective elastic modulus, Poisson＇s ratio and interface stress field of composite were studied by using the finite element method. It had been discovered that macroscopically effective elastic modulus and Poisson＇s ratio changed as the packing ratio and wall thickness changed. The retationship between them followed Φ-t equivalence principle. Interface deboned phenomenon mainly caused by the radial stress.

关 键 词：空心玻璃微珠 颗粒增强复合材料 有效性能 界面应力场 

分 类 号：O341[理学—固体力学] TB332[理学—力学]