Microstructure-based modeling and evaluation of dynamic behaviors of SiCp/2024Al composites

被引：1

作者：

机构：

[1] College of Mechanical and Electrical Engineering, North University of China, Taiyuan

[2] State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an

[3] Department of Applied Chemistry, Yuncheng University, Yuncheng

[4] State Key Laboratory for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an

来源：

Yuan, Mei-Ni | 1600年 / Journal of Solid Rocket Technology卷 / 37期

关键词：

Dynamic behavior; Finite element method; Metallic composites; Microstructure;

D O I：

10.7673/j.issn.1006-2793.2014.04.021

中图分类号：

学科分类号：

摘要：

Using the information of image processing and recognition, a microstructure-based finite element model (FEM) is established to evaluate the dynamic properties of SiCp/2024Al composites at strain rates ranging from 200 to 14 000 s-1. In the microstructure-based model, the irregular SiC particles are randomly distributed in the metal matrix. The results show that the flow stress of SiCp/2024Al composites with low particle volume fraction increases firstly to a maximum value and then decreases with the increasing of strain rate during adiabatic compression. The probable reason for the reduction of flow stress is that the inner damage and the heat softening of composites play a key role in the dynamic behavior of SiCp/2024Al composites at higher strain rates. Moreover, the configurations of SiC particles have dominate influence on the dynamical behavior of SiCp/2024Al composites. In particular, in cases of smaller strain (less than 0.62), the angular particles have better strengthening effect than those of circle particles, however, in contrast, the strengthening effect of circle particles is more remarkable.

引用

页码：541 / 544

页数：3

共 12 条

[1] Zhang J.T., Liu L.S., Zhai P.C., Fu Z.Y., Zhang Q.J., The prediction of the dynamic responses of ceramic particle reinforced MMCs by using multi-particle computational micro-mechanical method , (2007)
[2] Chen Y.L., Ghosh S., Micromechanical analysis of strain rate-dependent deformation and failure in composite microstructures under dynamic loading conditions , (2012)
[3] Lim L.G., Dunne F.P.E., The effect of volume fraction of reinforcement on the elastic-viscoplastic response of metal matrix composites , (1996)
[4] Zhang H., Ramesh K.T., Chin E.S.C., Effects of interfacial debonding on the rate-dependent response of metal matrix composites , (2005)
[5] Flores-Johnson E.A., Luming S., Irene G., Numerical investigation of the impact behaviour of bioinspired nacre-like aluminium composite plates , (2014)
[6] Taylor E.A., Tsembelis K., Hayhurst C.J., Kay L., Burchell M.J., Hydrocode modelling of hypervelocity impact on brittle materials: depth of penetration and conchoidal diameter , (1999)
[7] Perng C.C., Hwang J.R., Doon J.L., The effect of strain rate on the tensile properties of an Al2O3/6061-T6 aluminum Metal matrix composite at low temperatures , (1993)
[8] Tan Z.H., Pang B.J., Qin D.T., The compressive properties of 2024Al matrix composites reinforced with high content SiC particles at various strain rates, (2008)
[9] Yao Z., Pang B.J., Shi J.Y., Yang Z.Q., Wang L.W., Gai B.Z., Dynamic compressive properties of 40 vol% SiCp/2024Al composite , 27, 1, (2010)
[10] Leduc P.R., Bao G., Thermal softening of a particle-modified tungsten-based composite under adiabatic compression , (1997)

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