Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9711677 | Mechanics of Materials | 2005 | 24 Pages |
Abstract
A Hill-type incremental formulation for two-phase composites was recently proposed by Doghri and Ouaar [Int. J. Solids Struct. 40(7) (2003) 1681]. We present a slightly improved version of the formulation and test it for non-spherical inclusions. The formulation enables the simulation of unloading and cyclic loadings. Two homogenization schemes are implemented: Mori-Tanaka (M-T) and an interpolative double-inclusion model (D-I). Two plasticity models which can be used for any phase are implemented: classical J2 elasto-plasticity and Chaboche's model with non-linear kinematic and isotropic hardenings. All rate equations are discretized in time using implicit generalized mid-point schemes. A two-scale procedure for the simulation of composite structures is developed: a finite element (FE) program at macro-scale linked to the homogenization module at micro-scale. An extensive validation of the homogenization predictions against experimental data and direct unit cell FE simulations is conducted for several composite systems.
Related Topics
Physical Sciences and Engineering
Engineering
Mechanical Engineering
Authors
I. Doghri, C. Friebel,