A new interpolative homogenization model for evaluation of the effective elasto-plastic responses of two-phase composites. (15th February 2019)

• Record Type: Journal Article
• Authors: Tian, Wenlong; Qi, Lehua; Chao, Xujiang; Liang, Junhao; Fu, M.W.
• Is Part Of: Composite structures. Volume 210(2019)
• Page Start: 810
• Page End: 821
• Publication Date: 2019-02-15
• Subjects: Elasto-plastic response -- FE homogenization -- Interpolative M-T/D-I model -- Micro-mechanics -- Numerical algorithm -- Tangent formulation; Composite construction -- Periodicals; Composites -- Périodiques; 624.18
• DOI: 10.1016/j.compstruct.2018.11.075
• Languages: English
• ISSNs: 0263-8223

Abstract

Abstract: To accurately predict the effective elasto-plastic responses of two-phase composites, an interpolative M-T/D-I mean-field homogenization model with the tangent formulation is proposed, and the numerical implementation algorithm of the proposed M-T/D-I model with the tangent formulation is presented. The comparisons between the effective elastic properties and elasto-plastic responses of two-phase composites predicted by the M-T/D-I model with the tangent formulation and the RVE based FE homogenization method show that the M-T/D-I model with the tangent formulations can accurately evaluate the effective mechanical properties of two-phase composites. The simulation results demonstrate that the elastic properties of two-phase composites predicted by the M-T/D-I model are more accurate than those predicted by the D-I and M-T models, and the effective elasto-plastic responses of two-phase composites predicted by the M-T/D-I model vary in the range of those predicted by the D-I and M-T models. It is revealed that the M-T/D-I model with the tangent formulation allows to simulate the tensile/compression and biaxial tensile/shear elasto-plastic responses of two-phase composites. Lastly, the effects of the inclusion volume fraction and elastic properties on the effective elasto-plastic responses of two-phase composites are discussed for showing the capability of the proposed interpolative M-T/D-I model with the tangent formulation.