Advisor(s)
Abstract(s)
Additive manufacturing is a widely used process consisting in the
building of a three-dimensional (3D) object from a model projected on a computer, adding the material layer-by-layer. This technology allows the printing of
complex shape objects and is being increasingly adopted by the aircraft industry,
medical implants, jewelry, footwear, automotive, fashion products, among others.
The build orientation optimization of 3D models has a great influence on costs
and surface quality when printing three-dimensional objects.
In this work, three build orientation optimization problems are studied: single objective problem, bi-objective problem and many-objective problem. To this
end, three quality measures are applied: the support area, the build time and the
surface roughness, for the Car Hoodvent model. First, a single-objective optimization problem is presented and solved by the genetic algorithm, obtaining
optimal solutions for each objective function. Then, the study of the bi-objective
optimization problem is carried out for each pair of two objectives and some
representative trade-off solutions are identified. Finally, the study of the many objective optimization problem, considering the three measures optimized simultaneously, is presented with some more optimal solutions found. The bi-objective
and many-objective problems are solved by a multi-objective genetic algorithm.
For a better analysis and comparison of the solutions found, the Pareto fronts are
used, enabling a better visualization of the solutions between the objectives. This
study aims to assist the decision-maker in choosing the best part print orientation
angles according to his/her preferences. The optimal solutions found confirmed
the effectiveness of the proposed approach.
Description
Keywords
Additive manufacturing 3D Printing Multi-objective optimization Single-objective optimization Build orientation
Citation
Matos, Marina A.; Rocha, Ana Maria A.C.; Costa, Lino; Pereira, Ana I. (2023). Build orientation optimization of car hoodvent with additive manufacturing. In Manupati, Vijaya; Putnik, Goran; Varela, Maris (Eds.) Smart and sustainable Manufacturing Systems for Industry 4.0. p. 163 - 191. ISBN 9780367643027