Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
DENSITY BASED TOPOLOGY OPTIMIZATION FOR FUSED DEPOSITION MODELING ON MECHANICAL APDL
Submission Author:
Lucas Inácio , DF
Co-Authors:
Lucas Inácio, Dianne Magalhães Viana
Presenter: Lucas Inácio
doi://10.26678/ABCM.COBEM2019.COB2019-1921
Abstract
This work presents a topology optimization algorithm to investigate hollowing methods for 3D Printing, written in Ansys Parametric Design Language, developed to perform a stress guided mass reduction through hollowing. The goal is to achieve the minimal amount of material necessary to maintain piece resistance under specific loading conditions. Motivated by the need to prototype a hydro-kinetic turbine blade for testing, the algorithm must preserve the piece’s outer surface and hollow it’s interior with spherical cavities, creating a porous geometry with variable density. The piece is designed within Mechanical APDL following the NACA 4415 parametric equation for the blade sections. After a finite element analysis of the primitive piece, the data on node position and stress levels are used to guide the creation of cavities. Nodes coordinates are used as possible cavities centers and the algorithm evaluates in which nodes the cavities are going to be created and with which size, according to available space and stress level. The algorithm can successfully create geometrical coherent cavities, that don’t interfere with the external surface or with each other. With this methodology we expect to find a cavity distribution that results in a piece with high strength to mass ratio and compare these results with common mass reduction methods available for 3D printing.
Keywords
Mechanical APDL, Topology optimization algorithm, 3D printing
