Influence of the geometry and material properties on the dynamic stress field in the matrix containing a spheroidal particle reinforcement

被引：2
|
作者：
Bugarin, S.
Paskaramoorthy, R. [1 ]
Reid, R. G.
机构：
[1] Univ Witwatersrand, Sch Mech Ind & Aeronaut Engn, DST NRF Ctr Excellence Strong Mat, ZA-2050 Wits, South Africa
来源：
COMPOSITES PART B-ENGINEERING | 2012年 / 43卷 / 02期
基金：
新加坡国家研究基金会;
关键词：
Particle reinforcement; Stress concentrations; Computational modeling; PIEZOELECTRIC PARTICLE; POLYMER MATRIX; WAVES; COMPOSITES; SCATTERING; LAYERS; LOADS;
D O I：
10.1016/j.compositesb.2011.06.005
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The fracture and fatigue properties of particle reinforced composites are greatly influenced by stress concentration around the reinforcements. This study investigates the stress concentration around a prolate spheroidal particle that is embedded in an elastic matrix and subjected to asymmetric dynamic loading. A hybrid technique that combines the finite element method with spherical wave functions is used to study the problem. The stress concentrations within the matrix at the matrix-particle interface are found to be dependent on the frequency of excitation, aspect ratio of the particle and the material properties of both matrix and particle. The study reveals that the dynamic stress concentration can reach much higher values than the corresponding static case. (C) 2011 Elsevier Ltd. All rights reserved.
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页码：272 / 279
页数：8
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