Muhammad Syeh Mas'ud, Redyarsa Dharma Bintara, Suprayitno
3D printing is a manufacturing process that made a 3D model layer by layer. The problem arises when a 3D model wants to be produced in big size. Currently, the size of 3D printers that available on the are relatively small, around 235 mm × 235 mm × 250 mm. Alternatively we can print in small parts and assemble it together by using joints. The sharp corners on the geometry joint can cause stress concentration which can allow failure to the structure. The purpose of this research is to figure out how the variation of fillet, chamfer, and width ratio on the contact surface affect the von Mises stress value in the T-joint that made from PLA. The mechanical properties of PLA acquired from tensile test using ASTM D3039 standard. Furthermore, the data was used as an input for simulate the strength of model. The static analysis was performed to the model. Furthermore, von Mises stress and safety factor was recorded and analyzed to evaluate the strength of the model. The results showed that increase in fillet radius decreased the maximum von Mises stress. The minimum value of von Mises stress with fillet parameter is 48.979 MPa. The parameter of chamfer had the lowest value of von Mises stress on angle geometry of 30° the minimum value is 51.056 MPa. © 2024 American Institute of Physics Inc.. All rights reserved.
Department of Mechanical Engineering, Faculty of Engineering, Universitas Negeri Malang, Jl. Semarang No. 5, Malang, 65145, Indonesia
