RT Journal Article ID 598a10fe28aba2d7 A1 Liu, JianTao A1 Gu, Shui Tao A1 He, Qi-Chang T1 A COMPUTATIONAL APPROACH FOR EVALUATING THE EFFECTIVE ELASTIC MODULI OF NON-SPHERICAL PARTICLE REINFORCED COMPOSITES WITH INTERFACIAL DISPLACEMENT AND TRACTION JUMPS JF International Journal for Multiscale Computational Engineering JO JMC YR 2015 FD 2015-03-06 VO 13 IS 2 SP 123 OP 143 K1 particle reinforcement K1 interface/interphase K1 computational modeling K1 micromechanics K1 XFEM AB The present article proposed a numerical approach to accurately evaluate the size- and shape-dependent effective moduli of engineering heterogeneous materials containing arbitrarily shaped interfaces exhibiting both displacement and normal traction discontinuities. First, boundary condition on a representative volume element (RVE) and the effective moduli of composites involving interfacial discontinuities are precisely defined based on micromechanics. Then, a numerical approach framed within the extended finite element method (XFEM) together with the level set method (LSM) is elaborated to evaluate the averaged physical quantities over a RVE and the effective moduli of composites. Further, the unified scheme in Duan et al. (2007) to evaluate the effective moduli of composites is extended to the materials with physics-based general imperfect interfaces, and a benchmark problem is designated based on the approximated analytic formula of the effective moduli and utilized to test the validity and robustness of the elaborated numerical approach. All predictions show good agreement with the relevant analytic results. Finally, the numerical approach validated is applied to investigate the size- and shape-dependent effective moduli of composites and some concluding remarks are given. PB Begell House LK https://www.dl.begellhouse.com/journals/61fd1b191cf7e96f,7132a71b3cf0c1d3,598a10fe28aba2d7.html