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Mechanics of Advanced Materials and Structures Volume 21, 2014 - Issue 10
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Original Articles

Finite Element Modeling of the Indentation and Scratch Response of Epoxy/Silica Nanocomposites

Zhengzhi WangDepartment of Modern Mechanics, Key Laboratory of Material Mechanical Behavior and Design of Chinese Academy of Science, University of Science and Technology of China, Hefei Anhui, China
,
Ping GuDepartment of Modern Mechanics, Key Laboratory of Material Mechanical Behavior and Design of Chinese Academy of Science, University of Science and Technology of China, Hefei Anhui, ChinaCorrespondence[email protected]
,
Hui ZhangNational Center for NanoScience and Technology, Beijing, China
,
Zhong ZhangNational Center for NanoScience and Technology, Beijing, China
&
Xiaoping WuDepartment of Modern Mechanics, Key Laboratory of Material Mechanical Behavior and Design of Chinese Academy of Science, University of Science and Technology of China, Hefei Anhui, China
Pages 802-809 | Received 05 Dec 2011, Accepted 11 May 2012, Published online: 07 Jul 2014
 
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Abstract

A numerical study on the indentation and scratch responses of epoxy (EP) and its composites using finite element modeling is presented. This work is motivated by previous experimental results [Citation1], which show that the addition of silica nanoparticles can obviously increase the hardness and modulus and improve the scratch-resistance of the EP matrix. Simulation results are compared with these experimental ones and show very close agreements. The modification mechanisms of the nanoparticles are also presented. Stress analysis demonstrates that the load transferring from matrix to particles is the direct strengthening mechanism.

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