Parametric study on the stress behaviour of 3D printed PLA plate with hole

• Published in: AIP Conference Proceedings
• Main Author: Kuntjoro W.; Jalil A.M.H.B.A.; Redzuan A.N.B.A.; Nasir R.E.B.M.
• Format: Conference paper
• Language: English
• Published: American Institute of Physics Inc. 2023
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85179820976&doi=10.1063%2f5.0166040&partnerID=40&md5=ff11a83b67a55fc249a13a6b45238edd

A plate construction with holes is often utilized in engineering and is commonly found in lightweight (airplane) structures. 3D printed Polylactic Acid (PLA) plate with a hole is potential to use in lightweight (airplane) structures. It's essential to comprehend the stress concentration of 3D printed PLA plates and even the stress behavior around the hole. This study calculates the stress concentration factor of the flat and curved PLA plate structures printed using 3D printing and studies the stress features surrounding holes of the plate structure. ANSYS was used to create the flat and curved plate with holes of 40 mm, 20 mm, and 10 mm in diameter. With a 2.5 N/mm2 applied load to the plate, such models were put through finite element analysis and simulations using ANSYS to investigate the maximum stress in the longitudinal direction, which was then likened to the theoretical result using the analytical technique. The Stress Concentration Factor (Kt) vs. Plate Diameter graph indicates that the stress concentration factor increases with decreasing diameter. The stress versus diameter graph for elements with dimensions of 5 mm, 4 mm, and 2 mm compares the maximum stress between analysis methods and finite element analysis. The result shows that the smaller the hole diameter for the flat and curved plate, the higher the stress concentration factor. The maximum stress is demonstrated to be decreasing as the hole gets smaller. © 2023 Author(s).