[SY-H9] Deformation analysis of UV curing 3d printed materials by combined molecular dynamics-finite element method
3d printing technology with UV cured polymer has been applied to diverse industrial areas since it has advantages of reducing time and costs for producing complex structures. Especially in aerospace industries where parts with complex geometries are needed, 3d printing is said to be a suitable manufacturing technique for such elaborate components. However, there has been little research on the polymerization-induced deformation such as microscopic porosity and cure shrinkage strain in the 3d printing technology to our knowledge.
In this work, molecular dynamics (MD) simulation is adopted for modeling UV induced polymerization process to derive cure shrinkage strain. Based on the finite element method, the strain of the polymer from MD simulation is then applied to the structure modeled by Abaqus software, to predict macroscopic deformation. This prediction methodology is verified with experiment results observed from deformation of 3d printed structures in reality.
In this work, molecular dynamics (MD) simulation is adopted for modeling UV induced polymerization process to derive cure shrinkage strain. Based on the finite element method, the strain of the polymer from MD simulation is then applied to the structure modeled by Abaqus software, to predict macroscopic deformation. This prediction methodology is verified with experiment results observed from deformation of 3d printed structures in reality.