Tensile failure prediction for cellular lattice structure fabricated by material extrusion using cohesive zone model

• Main Authors: Park, Sang-In, Watanabe, Narumi, Rosen, David W.
• Other Authors: School of Mechanical and Aerospace Engineering
• Format: Conference or Workshop Item
• Language: English
• Published: 2018
• Subjects: Cellular Lattice Structure; Material Extrusion; DRNTU::Engineering::Mechanical engineering::Prototyping
• Online Access: https://hdl.handle.net/10356/88568; http://hdl.handle.net/10220/45861
• Institution: Nanyang Technological University

In material extrusion, the geometrical approximation process introduces defects such as voids and gaps in the build plane as well as along the building direction. These serve as crack initiation sites and increase possibility of fracture by crack propagation. As a result, structural members under...