Strength Analysis of Syntactic Foams Using a Three-Dimensional Continuum Damage Finite Element Model

被引：4

作者：

Shan, Yejie ^{[1
,2
]}

Nian, Guodong ^{[1
,2
]}

Xu, Qiang ^{[1
,2
,3
]}

Tao, Weiming ^{[1
,2
,3
]}

Qu, Shaoxing ^{[1
,2
,3
]}

机构：

[1] Zhejiang Univ, Dept Engn Mech, Hangzhou 310027, Zhejiang, Peoples R China

[2] Zhejiang Univ, Sch Aeronaut & Astronaut, Res Ctr Composites & Struct, Hangzhou 310027, Zhejiang, Peoples R China

[3] Zhejiang Univ, Key Lab Aerosp Numer Simulat & Validat, Minist Educ China, Hangzhou 310027, Zhejiang, Peoples R China

来源：

JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME | 2015年 / 82卷 / 02期

基金：

中国国家自然科学基金;

关键词：

syntactic foams; strength; finite element analysis; TENSILE PROPERTIES; ELASTIC PROPERTIES; FIBER REINFORCEMENT; THERMAL-PROPERTIES; NUMERICAL-ANALYSIS; WALL THICKNESS; RADIUS RATIO; COMPOSITES; NANOCLAY; BEHAVIOR;

D O I：

10.1115/1.4029387

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

The failure behavior of the syntactic foams is investigated based on a three-dimensional (3D) micromechanical finite element (FE) model, by varying the volume fraction, the wall thickness of the hollow particles, and the interfacial strength. The maximum principal stress criterion is adopted to determine the state (damaged or undamaged) for both interface and matrix. Material property degradation is used to describe the mechanical behavior of those damaged elements. The current model can reasonably predict the tensile strength of the syntactic foams with high volume fractions (40%-60%). The failure mechanism of the syntactic foam under uniaxial tension is captured by analyzing the stress-strain curves and the contours of damaging evolution process. Results from the quantitative simulations demonstrate that the tensile strength of the syntactic foam can be improved effectively by enhancing the interfacial strength.

引用

页数：7

共 46 条

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