Effective pressure-sensitive elastoplastic behavior of particle-reinforced composites and porous media under isotropic loading
Effective pressure-sensitive elastoplastic behavior of particle-reinforced composites and porous media under isotropic loading
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DOI：
10.1016/j.ijplas.2007.08.006
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发表时间：
2008-02
影响因子：
9.8
通讯作者：
H. Quang;Q. He
中科院分区：
文献类型：
--
作者：
H. Quang;Q. He
所研究的复合材料由弹性颗粒增强或孔隙弱化的弹塑性基体组成。形成基质的材料是压敏的。采用Drucker-Prager屈服准则和单参数非关联流动法则来描述矩阵的屈服行为。本工作的目的是估计各向同性拉伸和压缩载荷下的复合材料的有效弹塑性行为。为了实现这一目标，Hashin [Z. Hashin，异质材料的弹性模量，ASME J.Appl.Mech.29（1962）143-150]。精确的解决方案，从而推导出的复合材料的有效割线和切线体积模量的估计。分析和数值计算了加载方式和相特性对复合材料有效弹塑性行为的影响。
The composite under investigation consists of an elastoplastic matrix reinforced by elastic particles or weakened by pores. The material forming the matrix is pressure-sensitive. The Drucker–Prager yield criterion and a one-parameter non-associated flow rule are employed to formulate the yield behavior of the matrix. The objective of this work is to estimate the effective elastoplastic behavior of the composite under isotropic tensile and compressive loadings. To achieve this objective, the composite sphere assemblage model of Hashin [Z. Hashin, The elastic moduli of heterogeneous materials, ASME J. Appl. Mech. 29 (1962) 143–150] is used. Exact solutions are thus derived as estimations for the effective secant and tangent bulk moduli of the composite. The effects of the loading modes and phase properties on the effective elastoplastic behavior of the composite are analytically and numerically evaluated.