期刊
ADDITIVE MANUFACTURING
卷 22, 期 -, 页码 351-359出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.addma.2018.05.027
关键词
Material jetting; Functionally graded materials; 3-dimensional printing; Additive manufacturing; Finite element analysis; Digital materials
资金
- Summer Faculty Fellowship from the US Air Force Office of Scientific Research
- NSF [MRI-1229514]
- Indiana University-Purdue University Indianapolis
- National Research Council of Science & Technology under the R&D Program of Ministry of Science, ICT and Future Planning
The goal of this work is to validate the material models for parts created with a Material Jetting 3-dimensional printer through the comparison of Finite Element Analysis (FEA) simulations and physical tests. The strain maps generated by a video extensometer for multi-material samples are compared to the FEA results based on our material models. Two base materials (ABS-like and rubber-like) and their composites are co-printed in the graded tensile test samples. The graded islands are embedded in the rubber-like test specimens. The simulations were conducted utilizing previously fitted material models, a two-parameter Mooney-Rivlin model for the elastic materials (Tango Black + , DM95, and DM60) and a bilinear model for the rigid material (Vero White +). The results show that the simulation results based on our material models can predict the deformation behaviors of the multi-material samples during a uniaxial tensile test. Our simulation results are able to predict the maximum strain in the matrix material (TB +) within 5% error. Both global deformation pattern and local strain level confirm the validity of the simulated material models.
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