Shrikrishna Pawar

Research Scholar, Department of Mechanical Engineering, Jawaharlal Nehru Engineering College, MGM University, MGM Campus, N6, CIDCO, Aurangabad

Dhananjay Dolas

Associate Professor, Department of Mechanical Engineering, Jawaharlal Nehru Engineering College, MGM University, MGM Campus, N6, CIDCO, Aurangabad – 431 003 (MS).

Abstract

Fused deposition modeling (FDM) is material extrusion based additive manufacturing (AM) technology used to build various prototypes and functional parts. FDM is widely used AM process that works with thermoplastic material and is inexpensive relative to other AM technologies. Several research works had experimentally investigated the effect of FDM process parameters on the performance of the parts however, due to wider scope of using different materials and design flexibilities, it is imperative to use numerical simulation approach to speed up the research work in order to reduce the delay and research costs. In this study, numerical simulation tool Digimat-AM was used to predict the effect of infill density and layer thickness upon process defects such as deflection and residual stress. Impeller made up of ABS material was used as a specimen for numerical simulation. Simulation results were analysed using ANOVA which indicated that layer thickness had significant impact on deflection and residual stress, while the infill density did not influence the output parameters.

Keywords- fused deposition modeling, impeller, process simulation, deflection, residual stress