TY - GEN
T1 - A bottom-up simulation for impact fracture behavior of nanoparticle- reinforced composites
AU - Leng, Dingxin
AU - Sun, Lingyu
AU - Hu, Dayong
AU - Lin, Yi
PY - 2011
Y1 - 2011
N2 - To explore the dynamic impact fracture behavior of nanoparticle-reinforced composites, a bottom-up numerical method was proposed and verified through the fracture process simulation of nano-SiO2/epoxy sample in Charpy impact test. At the nano-scale, a parametric micromechanics model having interphase was built. And the effective material properties of the nanocomposites with variant volume fractions were obtained. Based on the homogenization theory, the macro-scale model of impact sample was established. It is demonstrated that this proposed bottom-up method can predict the locations and directions of cracks at macro-scale, and the growth process of rupture can also be visualized dynamically. The impact strength obtained from this method has a good agreement with the measuring results in literature. And this simulation method can also be used as an assistant tool for comparing the crack propagation rate of nanocomposites with variant particle contents. © (2011) Trans Tech Publications.
AB - To explore the dynamic impact fracture behavior of nanoparticle-reinforced composites, a bottom-up numerical method was proposed and verified through the fracture process simulation of nano-SiO2/epoxy sample in Charpy impact test. At the nano-scale, a parametric micromechanics model having interphase was built. And the effective material properties of the nanocomposites with variant volume fractions were obtained. Based on the homogenization theory, the macro-scale model of impact sample was established. It is demonstrated that this proposed bottom-up method can predict the locations and directions of cracks at macro-scale, and the growth process of rupture can also be visualized dynamically. The impact strength obtained from this method has a good agreement with the measuring results in literature. And this simulation method can also be used as an assistant tool for comparing the crack propagation rate of nanocomposites with variant particle contents. © (2011) Trans Tech Publications.
KW - Finite element analysis (FEA)
KW - Impact behavior
KW - Nanocomposites
KW - Particle-reinforcement
KW - Polymer-matrix composites
UR - https://www.scopus.com/pages/publications/79751477173
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-79751477173&origin=recordpage
U2 - 10.4028/www.scientific.net/AMR.183-185.2308
DO - 10.4028/www.scientific.net/AMR.183-185.2308
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 9783037850220
VL - 183-185
T3 - Advanced Materials Research
SP - 2308
EP - 2312
BT - Environmental Biotechnology and Materials Engineering
PB - Trans Tech Publications Ltd.
ER -