Abstract
Casting aluminum alloys are highly heterogeneous materials with different types of voids that govern the mechanical behavior of the material. In this paper, based on the analysis of a cylindrical void model and the assumption of matrix incompressibility, the void evolution of a casting aluminum alloy is derived. Through the analysis of the micro-velocity and the strain fields of the cylindrical void model, an endochronic constitutive equation involving void evolution is obtained for cast aluminum alloys. The corresponding finite element procedure is developed and applied to the analysis of the mechanical behavior and the porosity of casting aluminum alloy A101. The computed results show satisfactory agreement with experimental data.
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