Sub-modeling Finite Element Analysis of 3D printed structures

For the first time, nested sub-modeling approach and Finite Element Analysis have been used to analyze the structural mechanical of 3D Printed part, whereas the details of 3D printing patterns included in sub-model. The results present a general tool which can improve the quality of 3D printed parts, which have multidisciplinary application in various fields. It is found that the Maximum Principle stress is highly concentrated at 3D printed layers. For a specific 3D printing pattern, the stress intensity factor has been calculated to have the value of 4. Results have been discussed from theoretical, simulation and experimental observation point of view.