Arya Mulyana Kusumah, Redyarsa Dharma Bintara, Suprayitno
3D printing is one of the manufacturing technologies that can be used for making a prototype part. Fused deposition modeling (FDM) is one 3D printing technology that has economic advantages in the use of materials and a variety of machine choices. Currently, the working capacity of 3D printing machines has many kinds but 235 × 235 × 250 mm of the working area is seldom seen on the market. Its working area becomes a problem if it is used to print a big model that has oversize than the working area of the machine. Therefore, the big model can be segmented and printed separately to solve the current problem. Furthermore, all segmented part is assembled to get the desired 3D printed part. The 3D assembled part is connected by a joint structure. So, the purpose of this study is to investigate the characteristic of the dovetail joint on a 3D model assembled to tensile load on polylactic acid (PLA) material using computer simulation. The ASTM D3039 standard is applied to get the mechanical properties of PLA material that is printed by a 3D printer machine. Furthermore, the data obtained is made as an input in simulation software. The maximum shear stress and factor safety are two output parameter that is evaluated to define the best parameter combination. The results showed that the shear stress minimum is 18.805 MPa and the factor safety of the model is 0.56983. It occurred on variation models w1 25 mm, w3 6 mm, and t 30 mm. The significant result is due to the increase in joint area, angle of joint, and bending moment. © 2023, The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
State University of Malang, Jl. Semarang No.5 Sumbersari, Malang, Indonesia