6533b7d0fe1ef96bd125a875

RESEARCH PRODUCT

A three-dimensional boundary element model for the analysis of polycrystalline materials at the microscale

Ivano BenedettiMh Aliabadi

subject

Polycrystalline materials Microstructure Modelling Material Homogenization Multi-region formulation Anisotropic Boundary Element Method.Settore ING-IND/04 - Costruzioni E Strutture Aerospaziali

description

A three-dimensional multi-domain anisotropic boundary element formulation is presented for the analysis of polycrystalline microstructures. The formulation is naturally expressed in terms of intergranular displacements and tractions that play an important role in polycrystalline micromechanics, micro-damage and micro-cracking. The artificial morphology is generated by Hardcore Voronoi tessellation, which embodies the main statistical features of polycrystalline microstructures. Each crystal is modeled as an anisotropic elastic region and the integrity of the aggregate is restored by enforcing interface continuity and equilibrium between contiguous grains. The developed technique has been applied to the numerical homogenization of SiC and the obtained results agree very well with available data.

yearjournalcountryeditionlanguage
2012-01-01
http://hdl.handle.net/10447/102661