Finite element simulation of lamellar copper–silver composites

• Published in: Computational materials science Vol. 101; pp. 29 - 38
• Main Authors: Dodla, Srihari, Bertram, A., Krüger, M.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 15.04.2015
• Subjects: COMPOSITES; COMPUTER SIMULATION; Crystal plasticity material model; Crystallographic texture; Finite element method; Lamellar phase structure; MATHEMATICAL ANALYSIS; Mathematical models; MECHANICAL PROPERTIES; Polycrystals; PROPERTIES; RVE; Surface layer; Texture; TEXTURES; Two-phase Cu–Ag polycrystals; RVE; Two-phase Cu–Ag polycrystals; Crystallographic texture; Lamellar phase structure; Crystal plasticity material model
• ISSN: 0927-0256; 1879-0801
• DOI: 10.1016/j.commatsci.2015.01.012

[Display omitted] •RVE is constructed with the important features of microstructure (lamellae, grains).•Material parameters of a crystal plasticity model have been identified.•Validation by means of compression tests in transverse direction.•Numerical texture results of each phase have been validated with experimental results. The mechanical behavior and texture evolution of lamellar Cu–Ag polycrystals are numerically investigated for a uniaxial compression test by three dimensional finite element simulations. In the representative volume element (RVE), the lamellar structure is generated inside the grains. A crystal plasticity material model for large deformations is used at each integration point. In this work, two cold drawn textured Cu–Ag polycrystals are modeled by periodic Voronoi tessellations in the finite element (FE) software ABAQUS. The FE calculations use periodic boundary conditions to simulate the mechanical behavior of the textured polycrystals. The numerical model is validated by experimental compression tests for a constant strain rate of 10-4s-1 at room temperature. The numerical results in terms of texture of each phase and the mechanical behavior have been compared with the experimental results.