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Proceedings of the 27th National and 5th International ISHMT-ASTFE Heat and Mass Transfer Conference December 14-17, 2023, IIT Patna, Patna-801106, Bihar, India
December, 14-17, 2023, Bihar, India

Topology Optimization and Thermal-Structural Finite Element Simulation of Metal Additive Manufacturing Process (LPBF) on Inconel 718

Get access (open in a dialog) DOI: 10.1615/IHMTC-2023.960
pages 591-597


The metal additive manufacturing process (MAM) gives an edge over the conventional manufacturing processes such as casting, welding, forming, machining to fabricate any complex structure. Therefore, we can design any complex component with lesser material to achieve light weight and efficient product without considering the feasibility of its fabrication process. In this present work, we have designed a bracket with optimum material to withstand bending load. At first, we have designed a simple bracket with a rectangular block having two holes in it. Then we have optimised the design with minimum material and checked its stability using finite element method (FEM) based structural analysis. However, the optimized geometry is much more complex in shape. Further, we have discussed about the fabrication process in order to obtain the best product in terms of material wastage and build time. Here, we have used density-based topology optimization (TO) technique to get the optimised design, and then we have used a finite element method based thermal-structural model to simulate the metal additive manufacturing process (laser powder bed fusion) of printing that optimized geometry with Inconel 718. A slight deformation in the final product is predicted by this simulation. As the process parameters have a great impact on the quality of the final product, the deformation can be minimized by optimizing the printing parameters.