Microstructure-Based Modeling of the Dynamic Behaviors of SiCp/7075Al Composites

IF 1.5 4区 材料科学 Q4 MATERIALS SCIENCE, COMPOSITES
Qingbo Chi, Xiaoming Du, Yan Wang, Lei Cao
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引用次数: 0

Abstract

The finite element analysis based on microstructure of SiCp (silicon carbide particulates) reinforced aluminum matrix composites to evaluate the dynamic mechanical response and damage behavior was carried out. The effects of strain rate, reinforcement content and reinforcement size on the stress-strain state of SiCp reinforced aluminum matrix composites and the damage mechanism were analyzed. The results show that the strain rate sensitivity of the composites is obvious, and this trend is promoted with the increase of SiCp content and the decrease of reinforcement size. The damage such as particle breakage and interface debonding was predicted, and the influence of reinforcement size on the damage mechanism was analyzed. It is found that the defects of the composites with smaller reinforcement particle size are mainly SiCp/Al interface debonding, while SiCp cracks and interface debonding are more likely to coexist in the composites with larger reinforcement size.

Abstract Image

基于微观结构的 SiCp/7075Al 复合材料动态行为建模
基于 SiCp(碳化硅微粒)增强铝基复合材料的微观结构进行了有限元分析,以评估其动态力学响应和损伤行为。分析了应变速率、加固含量和加固尺寸对 SiCp 增强铝基复合材料应力-应变状态的影响以及损伤机理。结果表明,复合材料的应变速率敏感性非常明显,而且这种趋势随着 SiCp 含量的增加和增强体尺寸的减小而增强。预测了颗粒断裂和界面脱粘等损伤,分析了增强尺寸对损伤机理的影响。结果发现,增强粒度较小的复合材料的缺陷主要是 SiCp/Al 界面脱粘,而增强粒度较大的复合材料中 SiCp 裂纹和界面脱粘更有可能同时存在。
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来源期刊
Mechanics of Composite Materials
Mechanics of Composite Materials 工程技术-材料科学:复合
CiteScore
2.90
自引率
17.60%
发文量
73
审稿时长
12 months
期刊介绍: Mechanics of Composite Materials is a peer-reviewed international journal that encourages publication of original experimental and theoretical research on the mechanical properties of composite materials and their constituents including, but not limited to: damage, failure, fatigue, and long-term strength; methods of optimum design of materials and structures; prediction of long-term properties and aging problems; nondestructive testing; mechanical aspects of technology; mechanics of nanocomposites; mechanics of biocomposites; composites in aerospace and wind-power engineering; composites in civil engineering and infrastructure and other composites applications.
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