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Article Dans Une Revue Modelling and Simulation in Materials Science and Engineering Année : 2017

Numerical simulation of mechanical deformation of semi-solid material using level-set based finite element method

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Résumé

In this work, a level-set based finite element method was used to numerically evaluate the mechanical behavior in a small deformation range of semi-solid material with different microstructure configurations. For this purpose, a finite element model of semi-solid phase was built based on Voronoï diagram. Interfaces between the solid and the liquid phases were implicitly described by level-set functions coupled to an anisotropic meshing technique. The liquid phase was considered as a Newtonian fluid, whereas the behavior of the solid phase was described by a viscoplastic law. Simulations were performed to study the effect of different parameters such as solid phase fraction, solid bridging. Results show that the macroscopic mechanical behavior of semi-solid material strongly depends on the solid fraction and the local microstructure which play important roles in the formation of hot tearing. These results could provide valuable information for the processing of semi-solid materials.
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Dates et versions

hal-01536648 , version 1 (12-06-2017)

Identifiants

Citer

Zhidan Sun, Marc Bernacki, Roland E. Logé, Guochao Gu. Numerical simulation of mechanical deformation of semi-solid material using level-set based finite element method. Modelling and Simulation in Materials Science and Engineering, 2017, 25 (6), 065020 (15pp). ⟨10.1088/1361-651X/aa788e⟩. ⟨hal-01536648⟩
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