Numerical simulation of the influence of particle clustering on tensile behavior of particle reinforced composites; Study of shape of the particles
This paper aims to investigate the influence of particle clustering on the tensile behavior of particle-reinforced composites composed of aluminum matrix and ceramic particles. Matrix was allowed to deform plastically, yet particles had only elastic deformation in a damage free process. By assuming a periodic microstructure, finite element simulations of a unit cell were carried out. The unit cells were modeled with different cluster densities as well as different particle aspect ratios. All particles were assumed to be oblate ellipsoids which were arranged linearly along the loading direction. Uniaxial stress-strain curves were gained through imposing gradual incremental displacements on the surface of the unit cell to the overall far-field strain of four percent. It was shown that clustering increases the plastic strain within ligaments between particles and promotes the strain hardening in the clustered region. Eventually, it causes a considerable increase in the level of the maximum principal stress in particles. The differences in stress-strain behavior among various composite models in macroscopic level were negligible.
Particle-reinforced composites Clustering Finite Element Method (FEM)
Seyed.M.R.Rafieipour Alavi Armin Abedini Zengtao Chen
Department of Mechanical Engineering,University of New Brunswick,Canada
国际会议
北京
英文
1-10
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）